./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-queue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-queue-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af4a0e4f738e916feae01fb2c2f056f4ba7834b8a7b8d69765614c5417c16c63 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:39:50,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:39:50,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:39:50,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:39:50,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:39:50,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:39:50,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:39:50,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:39:50,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:39:50,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:39:50,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:39:50,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:39:50,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:39:50,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:39:50,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:39:50,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:39:50,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:39:50,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:39:50,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:39:50,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:39:50,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:39:50,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:39:50,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:39:50,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:39:50,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:39:50,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:39:50,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:39:50,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:39:50,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:39:50,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:39:50,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:39:50,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:39:50,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:39:50,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:39:50,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:39:50,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:39:50,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:39:50,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:39:50,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:39:50,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:39:50,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:39:50,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-11-20 05:39:50,896 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:39:50,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:39:50,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:39:50,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:39:50,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:39:50,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:39:50,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:39:50,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:39:50,901 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:39:50,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:39:50,901 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:39:50,902 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:39:50,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:39:50,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:39:50,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:39:50,902 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:39:50,903 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:39:50,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:39:50,903 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:39:50,903 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:39:50,904 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:39:50,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:39:50,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:39:50,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:39:50,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:39:50,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:39:50,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:39:50,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:39:50,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:39:50,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:39:50,906 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af4a0e4f738e916feae01fb2c2f056f4ba7834b8a7b8d69765614c5417c16c63 [2021-11-20 05:39:51,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:39:51,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:39:51,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:39:51,240 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:39:51,240 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:39:51,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/forester-heap/sll-queue-2.i [2021-11-20 05:39:51,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/data/efbcb9866/157df9077c074a1f8d679ff62737c884/FLAG4724a7e30 [2021-11-20 05:39:51,915 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:39:51,916 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i [2021-11-20 05:39:51,936 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/data/efbcb9866/157df9077c074a1f8d679ff62737c884/FLAG4724a7e30 [2021-11-20 05:39:52,189 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/data/efbcb9866/157df9077c074a1f8d679ff62737c884 [2021-11-20 05:39:52,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:39:52,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:39:52,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:39:52,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:39:52,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:39:52,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:39:52" (1/1) ... [2021-11-20 05:39:52,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab98c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:52, skipping insertion in model container [2021-11-20 05:39:52,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:39:52" (1/1) ... [2021-11-20 05:39:52,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:39:52,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:39:52,652 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22387,22400] [2021-11-20 05:39:52,657 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22458,22471] [2021-11-20 05:39:52,658 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22532,22545] [2021-11-20 05:39:52,659 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22624,22637] [2021-11-20 05:39:52,660 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22701,22714] [2021-11-20 05:39:52,662 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22796,22809] [2021-11-20 05:39:52,663 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22873,22886] [2021-11-20 05:39:52,664 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22956,22969] [2021-11-20 05:39:52,665 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[23051,23064] [2021-11-20 05:39:52,667 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[23128,23141] [2021-11-20 05:39:52,668 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[23211,23224] [2021-11-20 05:39:52,669 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[23300,23313] [2021-11-20 05:39:52,671 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[23386,23399] [2021-11-20 05:39:52,673 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[23532,23545] [2021-11-20 05:39:52,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:39:52,689 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:39:52,760 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22387,22400] [2021-11-20 05:39:52,761 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22458,22471] [2021-11-20 05:39:52,763 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22532,22545] [2021-11-20 05:39:52,764 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22624,22637] [2021-11-20 05:39:52,765 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22701,22714] [2021-11-20 05:39:52,766 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22796,22809] [2021-11-20 05:39:52,767 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22873,22886] [2021-11-20 05:39:52,768 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[22956,22969] [2021-11-20 05:39:52,770 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[23051,23064] [2021-11-20 05:39:52,771 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[23128,23141] [2021-11-20 05:39:52,772 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[23211,23224] [2021-11-20 05:39:52,774 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[23300,23313] [2021-11-20 05:39:52,775 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[23386,23399] [2021-11-20 05:39:52,792 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_c1968c8f-1a89-403a-8974-c610bb16e8d6/sv-benchmarks/c/forester-heap/sll-queue-2.i[23532,23545] [2021-11-20 05:39:52,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:39:52,855 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:39:52,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:52 WrapperNode [2021-11-20 05:39:52,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:39:52,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:39:52,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:39:52,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:39:52,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:52" (1/1) ... [2021-11-20 05:39:52,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:52" (1/1) ... [2021-11-20 05:39:52,927 INFO L137 Inliner]: procedures = 119, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 222 [2021-11-20 05:39:52,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:39:52,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:39:52,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:39:52,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:39:52,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:52" (1/1) ... [2021-11-20 05:39:52,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:52" (1/1) ... [2021-11-20 05:39:52,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:52" (1/1) ... [2021-11-20 05:39:52,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:52" (1/1) ... [2021-11-20 05:39:52,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:52" (1/1) ... [2021-11-20 05:39:53,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:52" (1/1) ... [2021-11-20 05:39:53,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:52" (1/1) ... [2021-11-20 05:39:53,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:39:53,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:39:53,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:39:53,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:39:53,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:52" (1/1) ... [2021-11-20 05:39:53,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:39:53,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:39:53,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:39:53,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:39:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:39:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:39:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:39:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:39:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:39:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:39:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:39:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:39:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:39:53,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:39:53,298 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:39:53,300 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:39:53,914 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:39:53,928 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:39:53,928 INFO L301 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-20 05:39:53,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:39:53 BoogieIcfgContainer [2021-11-20 05:39:53,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:39:53,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:39:53,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:39:53,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:39:53,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:39:52" (1/3) ... [2021-11-20 05:39:53,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3beae7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:39:53, skipping insertion in model container [2021-11-20 05:39:53,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:52" (2/3) ... [2021-11-20 05:39:53,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3beae7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:39:53, skipping insertion in model container [2021-11-20 05:39:53,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:39:53" (3/3) ... [2021-11-20 05:39:53,943 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-queue-2.i [2021-11-20 05:39:53,955 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:39:53,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2021-11-20 05:39:54,024 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:39:54,041 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 [2021-11-20 05:39:54,041 INFO L340 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2021-11-20 05:39:54,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 100 states have (on average 2.26) internal successors, (226), 170 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:54,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 05:39:54,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:54,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 05:39:54,091 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:39:54,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:54,098 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-20 05:39:54,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:39:54,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412387104] [2021-11-20 05:39:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:54,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:39:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:54,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:39:54,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412387104] [2021-11-20 05:39:54,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412387104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:54,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:54,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:39:54,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195448347] [2021-11-20 05:39:54,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:54,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:39:54,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:39:54,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:39:54,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:39:54,407 INFO L87 Difference]: Start difference. First operand has 171 states, 100 states have (on average 2.26) internal successors, (226), 170 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:54,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:54,686 INFO L93 Difference]: Finished difference Result 169 states and 179 transitions. [2021-11-20 05:39:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:39:54,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 05:39:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:54,702 INFO L225 Difference]: With dead ends: 169 [2021-11-20 05:39:54,703 INFO L226 Difference]: Without dead ends: 165 [2021-11-20 05:39:54,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:39:54,710 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 160 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:54,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 109 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:39:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-20 05:39:54,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2021-11-20 05:39:54,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 160 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 173 transitions. [2021-11-20 05:39:54,772 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 173 transitions. Word has length 3 [2021-11-20 05:39:54,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:54,773 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 173 transitions. [2021-11-20 05:39:54,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 173 transitions. [2021-11-20 05:39:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 05:39:54,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:54,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 05:39:54,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:39:54,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:39:54,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:54,782 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-20 05:39:54,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:39:54,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703672875] [2021-11-20 05:39:54,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:54,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:39:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:54,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:39:54,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703672875] [2021-11-20 05:39:54,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703672875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:54,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:54,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:39:54,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794959527] [2021-11-20 05:39:54,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:54,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:39:54,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:39:54,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:39:54,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:39:54,868 INFO L87 Difference]: Start difference. First operand 161 states and 173 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:55,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:55,052 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2021-11-20 05:39:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:39:55,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 05:39:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:55,067 INFO L225 Difference]: With dead ends: 155 [2021-11-20 05:39:55,067 INFO L226 Difference]: Without dead ends: 155 [2021-11-20 05:39:55,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:39:55,070 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 147 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:55,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 112 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:39:55,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-20 05:39:55,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2021-11-20 05:39:55,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 101 states have (on average 1.603960396039604) internal successors, (162), 150 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2021-11-20 05:39:55,100 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 3 [2021-11-20 05:39:55,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:55,101 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2021-11-20 05:39:55,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:55,101 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2021-11-20 05:39:55,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 05:39:55,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:55,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:39:55,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:39:55,103 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:39:55,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:55,104 INFO L85 PathProgramCache]: Analyzing trace with hash 59263661, now seen corresponding path program 1 times [2021-11-20 05:39:55,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:39:55,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782026405] [2021-11-20 05:39:55,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:55,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:39:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:55,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:39:55,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782026405] [2021-11-20 05:39:55,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782026405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:55,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:55,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:39:55,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103500264] [2021-11-20 05:39:55,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:55,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:39:55,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:39:55,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:39:55,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:39:55,223 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:55,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:55,395 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2021-11-20 05:39:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:39:55,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 05:39:55,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:55,400 INFO L225 Difference]: With dead ends: 161 [2021-11-20 05:39:55,400 INFO L226 Difference]: Without dead ends: 161 [2021-11-20 05:39:55,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:39:55,405 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 260 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:55,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 116 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:39:55,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-20 05:39:55,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 153. [2021-11-20 05:39:55,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 108 states have (on average 1.5555555555555556) internal successors, (168), 152 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 168 transitions. [2021-11-20 05:39:55,433 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 168 transitions. Word has length 8 [2021-11-20 05:39:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:55,433 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 168 transitions. [2021-11-20 05:39:55,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:55,434 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 168 transitions. [2021-11-20 05:39:55,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 05:39:55,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:55,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:39:55,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:39:55,436 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:39:55,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:55,437 INFO L85 PathProgramCache]: Analyzing trace with hash 59263662, now seen corresponding path program 1 times [2021-11-20 05:39:55,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:39:55,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601926791] [2021-11-20 05:39:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:55,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:39:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:55,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:39:55,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601926791] [2021-11-20 05:39:55,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601926791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:55,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:55,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:39:55,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419117382] [2021-11-20 05:39:55,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:55,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:39:55,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:39:55,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:39:55,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:39:55,531 INFO L87 Difference]: Start difference. First operand 153 states and 168 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:55,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:55,750 INFO L93 Difference]: Finished difference Result 244 states and 260 transitions. [2021-11-20 05:39:55,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:39:55,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 05:39:55,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:55,753 INFO L225 Difference]: With dead ends: 244 [2021-11-20 05:39:55,753 INFO L226 Difference]: Without dead ends: 244 [2021-11-20 05:39:55,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:39:55,755 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 318 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:55,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 184 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:39:55,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-20 05:39:55,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 158. [2021-11-20 05:39:55,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 113 states have (on average 1.5309734513274336) internal successors, (173), 157 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 173 transitions. [2021-11-20 05:39:55,767 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 173 transitions. Word has length 8 [2021-11-20 05:39:55,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:55,767 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 173 transitions. [2021-11-20 05:39:55,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:55,768 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 173 transitions. [2021-11-20 05:39:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 05:39:55,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:55,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:39:55,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:39:55,769 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:39:55,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:55,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1837174119, now seen corresponding path program 1 times [2021-11-20 05:39:55,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:39:55,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421610676] [2021-11-20 05:39:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:55,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:39:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:55,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:39:55,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421610676] [2021-11-20 05:39:55,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421610676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:55,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:55,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:39:55,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271559340] [2021-11-20 05:39:55,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:55,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:39:55,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:39:55,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:39:55,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:39:55,820 INFO L87 Difference]: Start difference. First operand 158 states and 173 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:55,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:55,860 INFO L93 Difference]: Finished difference Result 148 states and 162 transitions. [2021-11-20 05:39:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:39:55,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 05:39:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:55,862 INFO L225 Difference]: With dead ends: 148 [2021-11-20 05:39:55,863 INFO L226 Difference]: Without dead ends: 148 [2021-11-20 05:39:55,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:39:55,865 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 125 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:55,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 135 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:39:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-20 05:39:55,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-20 05:39:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 108 states have (on average 1.5) internal successors, (162), 147 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:55,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 162 transitions. [2021-11-20 05:39:55,881 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 162 transitions. Word has length 9 [2021-11-20 05:39:55,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:55,881 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 162 transitions. [2021-11-20 05:39:55,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:55,881 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 162 transitions. [2021-11-20 05:39:55,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:39:55,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:55,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:39:55,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:39:55,883 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:39:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:55,884 INFO L85 PathProgramCache]: Analyzing trace with hash 467003055, now seen corresponding path program 1 times [2021-11-20 05:39:55,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:39:55,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974234477] [2021-11-20 05:39:55,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:55,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:39:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:56,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:39:56,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974234477] [2021-11-20 05:39:56,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974234477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:56,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:56,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:39:56,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168946929] [2021-11-20 05:39:56,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:56,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:39:56,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:39:56,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:39:56,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:39:56,029 INFO L87 Difference]: Start difference. First operand 148 states and 162 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:56,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:56,368 INFO L93 Difference]: Finished difference Result 219 states and 234 transitions. [2021-11-20 05:39:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:39:56,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 05:39:56,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:56,371 INFO L225 Difference]: With dead ends: 219 [2021-11-20 05:39:56,371 INFO L226 Difference]: Without dead ends: 219 [2021-11-20 05:39:56,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:39:56,376 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 110 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:56,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 682 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:39:56,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-20 05:39:56,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 147. [2021-11-20 05:39:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 108 states have (on average 1.4907407407407407) internal successors, (161), 146 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 161 transitions. [2021-11-20 05:39:56,384 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 161 transitions. Word has length 12 [2021-11-20 05:39:56,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:56,384 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 161 transitions. [2021-11-20 05:39:56,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 161 transitions. [2021-11-20 05:39:56,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:39:56,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:56,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:39:56,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:39:56,388 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:39:56,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:56,391 INFO L85 PathProgramCache]: Analyzing trace with hash 467003056, now seen corresponding path program 1 times [2021-11-20 05:39:56,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:39:56,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577621625] [2021-11-20 05:39:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:56,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:39:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:56,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:39:56,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577621625] [2021-11-20 05:39:56,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577621625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:56,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:56,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:39:56,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528818074] [2021-11-20 05:39:56,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:56,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:39:56,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:39:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:39:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:39:56,564 INFO L87 Difference]: Start difference. First operand 147 states and 161 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:56,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:56,896 INFO L93 Difference]: Finished difference Result 211 states and 228 transitions. [2021-11-20 05:39:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:39:56,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 05:39:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:56,898 INFO L225 Difference]: With dead ends: 211 [2021-11-20 05:39:56,898 INFO L226 Difference]: Without dead ends: 211 [2021-11-20 05:39:56,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:39:56,899 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 97 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:56,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 676 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:39:56,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-20 05:39:56,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 136. [2021-11-20 05:39:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 103 states have (on average 1.4466019417475728) internal successors, (149), 135 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:56,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2021-11-20 05:39:56,904 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 12 [2021-11-20 05:39:56,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:56,904 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2021-11-20 05:39:56,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2021-11-20 05:39:56,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:39:56,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:56,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:39:56,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:39:56,906 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:39:56,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:56,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1603335132, now seen corresponding path program 1 times [2021-11-20 05:39:56,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:39:56,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822643099] [2021-11-20 05:39:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:56,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:39:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:56,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:39:56,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822643099] [2021-11-20 05:39:56,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822643099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:56,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:56,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:39:56,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919662092] [2021-11-20 05:39:56,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:56,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:39:56,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:39:56,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:39:56,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:39:56,940 INFO L87 Difference]: Start difference. First operand 136 states and 149 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:56,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:56,970 INFO L93 Difference]: Finished difference Result 191 states and 211 transitions. [2021-11-20 05:39:56,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:39:56,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:39:56,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:56,972 INFO L225 Difference]: With dead ends: 191 [2021-11-20 05:39:56,973 INFO L226 Difference]: Without dead ends: 191 [2021-11-20 05:39:56,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:39:56,974 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 47 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:56,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 250 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:39:56,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-20 05:39:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 149. [2021-11-20 05:39:56,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 116 states have (on average 1.4051724137931034) internal successors, (163), 148 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2021-11-20 05:39:56,980 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 15 [2021-11-20 05:39:56,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:56,981 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2021-11-20 05:39:56,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2021-11-20 05:39:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 05:39:56,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:56,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:39:56,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 05:39:56,983 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:39:56,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:56,984 INFO L85 PathProgramCache]: Analyzing trace with hash -775737061, now seen corresponding path program 1 times [2021-11-20 05:39:56,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:39:56,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32850255] [2021-11-20 05:39:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:56,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:39:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:57,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:39:57,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32850255] [2021-11-20 05:39:57,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32850255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:57,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:57,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:39:57,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018523051] [2021-11-20 05:39:57,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:57,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:39:57,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:39:57,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:39:57,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:39:57,059 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:57,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:57,211 INFO L93 Difference]: Finished difference Result 149 states and 163 transitions. [2021-11-20 05:39:57,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:39:57,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 05:39:57,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:57,213 INFO L225 Difference]: With dead ends: 149 [2021-11-20 05:39:57,213 INFO L226 Difference]: Without dead ends: 149 [2021-11-20 05:39:57,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:39:57,217 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 90 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:57,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 541 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:39:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-20 05:39:57,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2021-11-20 05:39:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 115 states have (on average 1.4) internal successors, (161), 146 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 161 transitions. [2021-11-20 05:39:57,225 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 161 transitions. Word has length 19 [2021-11-20 05:39:57,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:57,226 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 161 transitions. [2021-11-20 05:39:57,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:57,226 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 161 transitions. [2021-11-20 05:39:57,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 05:39:57,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:57,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:39:57,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 05:39:57,229 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:39:57,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:57,229 INFO L85 PathProgramCache]: Analyzing trace with hash 73317399, now seen corresponding path program 1 times [2021-11-20 05:39:57,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:39:57,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105085375] [2021-11-20 05:39:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:57,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:39:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:57,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:39:57,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105085375] [2021-11-20 05:39:57,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105085375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:57,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:57,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:39:57,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835575933] [2021-11-20 05:39:57,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:57,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:39:57,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:39:57,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:39:57,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:39:57,343 INFO L87 Difference]: Start difference. First operand 147 states and 161 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:57,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:57,504 INFO L93 Difference]: Finished difference Result 156 states and 170 transitions. [2021-11-20 05:39:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:39:57,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 05:39:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:57,506 INFO L225 Difference]: With dead ends: 156 [2021-11-20 05:39:57,506 INFO L226 Difference]: Without dead ends: 156 [2021-11-20 05:39:57,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:39:57,507 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 8 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:57,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 572 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:39:57,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-20 05:39:57,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2021-11-20 05:39:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 120 states have (on average 1.3833333333333333) internal successors, (166), 151 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:57,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2021-11-20 05:39:57,513 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 20 [2021-11-20 05:39:57,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:57,514 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2021-11-20 05:39:57,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:57,514 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2021-11-20 05:39:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 05:39:57,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:57,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:39:57,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 05:39:57,516 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:39:57,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:57,516 INFO L85 PathProgramCache]: Analyzing trace with hash -800612379, now seen corresponding path program 1 times [2021-11-20 05:39:57,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:39:57,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226651112] [2021-11-20 05:39:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:57,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:39:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:57,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:39:57,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226651112] [2021-11-20 05:39:57,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226651112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:57,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:57,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:39:57,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811105449] [2021-11-20 05:39:57,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:57,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:39:57,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:39:57,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:39:57,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:39:57,594 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:57,724 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2021-11-20 05:39:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:39:57,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-20 05:39:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:57,726 INFO L225 Difference]: With dead ends: 152 [2021-11-20 05:39:57,726 INFO L226 Difference]: Without dead ends: 152 [2021-11-20 05:39:57,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:39:57,727 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 125 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:57,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 296 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:39:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-20 05:39:57,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-20 05:39:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 120 states have (on average 1.375) internal successors, (165), 151 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2021-11-20 05:39:57,733 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 22 [2021-11-20 05:39:57,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:57,733 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2021-11-20 05:39:57,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:57,734 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2021-11-20 05:39:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 05:39:57,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:57,735 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] [2021-11-20 05:39:57,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 05:39:57,735 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr64REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:39:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:57,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1089542561, now seen corresponding path program 1 times [2021-11-20 05:39:57,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:39:57,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837913955] [2021-11-20 05:39:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:57,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:39:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:57,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:39:57,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837913955] [2021-11-20 05:39:57,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837913955] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:39:57,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625486472] [2021-11-20 05:39:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:57,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:39:57,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:39:57,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:39:57,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:39:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:57,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 05:39:57,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:58,204 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 29 treesize of output 21 [2021-11-20 05:39:58,228 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 18 treesize of output 10 [2021-11-20 05:39:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:58,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:58,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625486472] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:39:58,510 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:39:58,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 11 [2021-11-20 05:39:58,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195912011] [2021-11-20 05:39:58,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:39:58,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:39:58,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:39:58,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:39:58,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:39:58,513 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:58,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:58,935 INFO L93 Difference]: Finished difference Result 181 states and 199 transitions. [2021-11-20 05:39:58,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:39:58,936 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-20 05:39:58,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:58,937 INFO L225 Difference]: With dead ends: 181 [2021-11-20 05:39:58,937 INFO L226 Difference]: Without dead ends: 181 [2021-11-20 05:39:58,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:39:58,939 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 155 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:58,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 712 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:39:58,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-20 05:39:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 162. [2021-11-20 05:39:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 130 states have (on average 1.353846153846154) internal successors, (176), 161 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 176 transitions. [2021-11-20 05:39:58,945 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 176 transitions. Word has length 25 [2021-11-20 05:39:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:58,946 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 176 transitions. [2021-11-20 05:39:58,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:58,947 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 176 transitions. [2021-11-20 05:39:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 05:39:58,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:58,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:39:59,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:39:59,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 05:39:59,164 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:39:59,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:59,164 INFO L85 PathProgramCache]: Analyzing trace with hash 583917852, now seen corresponding path program 1 times [2021-11-20 05:39:59,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:39:59,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282598376] [2021-11-20 05:39:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:59,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:39:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:59,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:39:59,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282598376] [2021-11-20 05:39:59,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282598376] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:39:59,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559736431] [2021-11-20 05:39:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:59,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:39:59,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:39:59,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:39:59,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:39:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:59,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 05:39:59,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:59,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:59,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:59,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559736431] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:39:59,838 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:39:59,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2021-11-20 05:39:59,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475875574] [2021-11-20 05:39:59,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:39:59,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:39:59,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:39:59,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:39:59,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:39:59,842 INFO L87 Difference]: Start difference. First operand 162 states and 176 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:00,053 INFO L93 Difference]: Finished difference Result 172 states and 185 transitions. [2021-11-20 05:40:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:40:00,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-20 05:40:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:00,056 INFO L225 Difference]: With dead ends: 172 [2021-11-20 05:40:00,056 INFO L226 Difference]: Without dead ends: 153 [2021-11-20 05:40:00,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:40:00,057 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 33 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:00,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 381 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 159 Invalid, 0 Unknown, 1 Unchecked, 0.2s Time] [2021-11-20 05:40:00,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-20 05:40:00,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-20 05:40:00,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 121 states have (on average 1.371900826446281) internal successors, (166), 152 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2021-11-20 05:40:00,063 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 26 [2021-11-20 05:40:00,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:00,064 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2021-11-20 05:40:00,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2021-11-20 05:40:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 05:40:00,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:00,068 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:00,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:00,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:40:00,283 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:40:00,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:00,284 INFO L85 PathProgramCache]: Analyzing trace with hash -370767273, now seen corresponding path program 1 times [2021-11-20 05:40:00,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:40:00,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474879105] [2021-11-20 05:40:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:00,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:40:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:00,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:40:00,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474879105] [2021-11-20 05:40:00,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474879105] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:40:00,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733508996] [2021-11-20 05:40:00,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:00,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:40:00,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:40:00,502 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:40:00,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:40:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:00,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 05:40:00,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:00,597 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 [2021-11-20 05:40:00,693 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:40:00,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 05:40:00,755 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 20 treesize of output 16 [2021-11-20 05:40:00,906 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:40:00,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2021-11-20 05:40:01,000 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-20 05:40:01,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 44 [2021-11-20 05:40:01,283 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:40:01,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2021-11-20 05:40:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:01,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:02,193 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~item~0#1.offset| Int) (v_DerPreprocessor_1 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |ULTIMATE.start_main_~item~0#1.offset| 0) (+ 4 |ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_1)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2021-11-20 05:40:04,631 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.offset_37| Int) (v_DerPreprocessor_1 Int)) (not (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store |c_#memory_$Pointer$.base| .cse0 (store (store (select |c_#memory_$Pointer$.base| .cse0) |v_ULTIMATE.start_main_~item~0#1.offset_37| 0) (+ 4 |v_ULTIMATE.start_main_~item~0#1.offset_37|) v_DerPreprocessor_1))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2021-11-20 05:40:04,651 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 1366 treesize of output 1334 [2021-11-20 05:40:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:05,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733508996] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:40:05,180 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:40:05,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2021-11-20 05:40:05,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529517827] [2021-11-20 05:40:05,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:40:05,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 05:40:05,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:40:05,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 05:40:05,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=481, Unknown=3, NotChecked=90, Total=650 [2021-11-20 05:40:05,186 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:08,293 INFO L93 Difference]: Finished difference Result 177 states and 195 transitions. [2021-11-20 05:40:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 05:40:08,295 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-20 05:40:08,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:08,296 INFO L225 Difference]: With dead ends: 177 [2021-11-20 05:40:08,297 INFO L226 Difference]: Without dead ends: 177 [2021-11-20 05:40:08,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=149, Invalid=786, Unknown=3, NotChecked=118, Total=1056 [2021-11-20 05:40:08,298 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 89 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 259 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:08,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 1247 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 606 Invalid, 0 Unknown, 259 Unchecked, 0.4s Time] [2021-11-20 05:40:08,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-20 05:40:08,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 168. [2021-11-20 05:40:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 136 states have (on average 1.3455882352941178) internal successors, (183), 167 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:08,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 183 transitions. [2021-11-20 05:40:08,311 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 183 transitions. Word has length 29 [2021-11-20 05:40:08,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:08,312 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 183 transitions. [2021-11-20 05:40:08,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:08,313 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 183 transitions. [2021-11-20 05:40:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 05:40:08,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:08,316 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] [2021-11-20 05:40:08,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:08,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 05:40:08,532 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:40:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash -751968760, now seen corresponding path program 1 times [2021-11-20 05:40:08,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:40:08,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387536369] [2021-11-20 05:40:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:08,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:40:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:08,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:40:08,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387536369] [2021-11-20 05:40:08,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387536369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:08,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:08,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:40:08,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673510013] [2021-11-20 05:40:08,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:08,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:40:08,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:40:08,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:40:08,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:40:08,589 INFO L87 Difference]: Start difference. First operand 168 states and 183 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:08,617 INFO L93 Difference]: Finished difference Result 239 states and 260 transitions. [2021-11-20 05:40:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:40:08,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-20 05:40:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:08,619 INFO L225 Difference]: With dead ends: 239 [2021-11-20 05:40:08,620 INFO L226 Difference]: Without dead ends: 239 [2021-11-20 05:40:08,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:40:08,623 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 55 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:08,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 245 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:40:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-20 05:40:08,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 186. [2021-11-20 05:40:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 154 states have (on average 1.3051948051948052) internal successors, (201), 185 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 201 transitions. [2021-11-20 05:40:08,631 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 201 transitions. Word has length 30 [2021-11-20 05:40:08,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:08,631 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 201 transitions. [2021-11-20 05:40:08,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:08,632 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 201 transitions. [2021-11-20 05:40:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 05:40:08,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:08,634 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] [2021-11-20 05:40:08,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 05:40:08,635 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:40:08,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:08,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1573046208, now seen corresponding path program 1 times [2021-11-20 05:40:08,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:40:08,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969073293] [2021-11-20 05:40:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:08,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:40:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:08,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:40:08,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969073293] [2021-11-20 05:40:08,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969073293] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:40:08,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700529785] [2021-11-20 05:40:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:08,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:40:08,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:40:08,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:40:08,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:40:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:09,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 05:40:09,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:09,065 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 [2021-11-20 05:40:09,169 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 05:40:09,170 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 17 treesize of output 21 [2021-11-20 05:40:09,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-20 05:40:09,411 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:40:09,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 27 [2021-11-20 05:40:09,513 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-20 05:40:09,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 45 [2021-11-20 05:40:09,962 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:40:09,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 24 [2021-11-20 05:40:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:10,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:24,249 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 1570 treesize of output 1538 [2021-11-20 05:40:53,508 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc3#1.base_10| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc3#1.base_10|) 0)) (and (or (forall ((v_DerPreprocessor_2 Int)) (= (select (store |c_#valid| |v_ULTIMATE.start_main_#t~malloc3#1.base_10| 1) v_DerPreprocessor_2) 1)) (not (= |v_ULTIMATE.start_main_#t~malloc3#1.base_10| |c_ULTIMATE.start_main_~head~0#1.base|))) (or (forall ((v_arrayElimCell_18 Int)) (= (select (store |c_#valid| |v_ULTIMATE.start_main_#t~malloc3#1.base_10| 1) v_arrayElimCell_18) 1)) (and (= |c_ULTIMATE.start_main_~head~0#1.offset| |c_ULTIMATE.start_main_~item~0#1.offset|) (= |c_ULTIMATE.start_main_~item~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|)))))) is different from false [2021-11-20 05:40:56,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-20 05:40:56,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700529785] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:40:56,050 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:40:56,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 34 [2021-11-20 05:40:56,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715512009] [2021-11-20 05:40:56,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:40:56,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-20 05:40:56,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:40:56,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-20 05:40:56,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=935, Unknown=4, NotChecked=64, Total=1190 [2021-11-20 05:40:56,053 INFO L87 Difference]: Start difference. First operand 186 states and 201 transitions. Second operand has 35 states, 34 states have (on average 3.3529411764705883) internal successors, (114), 35 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:56,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:56,951 INFO L93 Difference]: Finished difference Result 212 states and 232 transitions. [2021-11-20 05:40:56,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 05:40:56,951 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.3529411764705883) internal successors, (114), 35 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-20 05:40:56,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:56,953 INFO L225 Difference]: With dead ends: 212 [2021-11-20 05:40:56,953 INFO L226 Difference]: Without dead ends: 212 [2021-11-20 05:40:56,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=370, Invalid=1522, Unknown=4, NotChecked=84, Total=1980 [2021-11-20 05:40:56,955 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 562 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 356 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:56,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 1201 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 607 Invalid, 0 Unknown, 356 Unchecked, 0.5s Time] [2021-11-20 05:40:56,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-20 05:40:56,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 197. [2021-11-20 05:40:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 165 states have (on average 1.309090909090909) internal successors, (216), 196 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:56,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 216 transitions. [2021-11-20 05:40:56,963 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 216 transitions. Word has length 39 [2021-11-20 05:40:56,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:56,963 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 216 transitions. [2021-11-20 05:40:56,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.3529411764705883) internal successors, (114), 35 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:56,964 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 216 transitions. [2021-11-20 05:40:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 05:40:56,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:56,965 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] [2021-11-20 05:40:57,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:57,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 05:40:57,187 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-20 05:40:57,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:57,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1573046209, now seen corresponding path program 1 times [2021-11-20 05:40:57,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:40:57,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869269205] [2021-11-20 05:40:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:57,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:40:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:57,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:40:57,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869269205] [2021-11-20 05:40:57,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869269205] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:40:57,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657671372] [2021-11-20 05:40:57,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:57,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:40:57,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:40:57,597 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:40:57,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1968c8f-1a89-403a-8974-c610bb16e8d6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:40:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:57,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 05:40:57,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:57,684 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 [2021-11-20 05:40:57,794 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:40:57,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 05:40:57,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:40:57,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-20 05:40:57,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:40:58,013 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:40:58,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-20 05:40:58,037 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:40:58,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 27 [2021-11-20 05:40:58,134 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-20 05:40:58,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 78 [2021-11-20 05:40:58,158 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-11-20 05:40:58,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 53 [2021-11-20 05:40:58,680 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:40:58,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 40 [2021-11-20 05:40:58,685 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:40:58,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-11-20 05:40:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:58,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:41:09,077 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:41:21,680 WARN L227 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:41:29,357 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 942 treesize of output 934 [2021-11-20 05:41:29,366 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 6734 treesize of output 6606