./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0102-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:14:08,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:14:08,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:14:08,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:14:08,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:14:08,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:14:08,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:14:08,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:14:08,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:14:08,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:14:08,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:14:08,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:14:08,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:14:08,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:14:08,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:14:08,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:14:08,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:14:08,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:14:08,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:14:08,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:14:08,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:14:08,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:14:08,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:14:08,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:14:08,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:14:08,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:14:08,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:14:08,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:14:08,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:14:08,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:14:08,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:14:08,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:14:08,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:14:08,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:14:08,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:14:08,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:14:08,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:14:08,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:14:08,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:14:08,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:14:08,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:14:08,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:14:08,857 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:14:08,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:14:08,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:14:08,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:14:08,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:14:08,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:14:08,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:14:08,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:14:08,861 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:14:08,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:14:08,862 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:14:08,862 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:14:08,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:14:08,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:14:08,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:14:08,863 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:14:08,863 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:14:08,864 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:14:08,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:14:08,864 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:14:08,864 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:14:08,865 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:14:08,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:14:08,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:14:08,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:14:08,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:14:08,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:14:08,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:14:08,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:14:08,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:14:08,867 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:14:08,868 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:14:08,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:14:08,868 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 [2022-11-25 18:14:09,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:14:09,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:14:09,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:14:09,218 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:14:09,218 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:14:09,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/memsafety/test-0102-2.i [2022-11-25 18:14:12,418 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:14:12,781 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:14:12,782 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/sv-benchmarks/c/memsafety/test-0102-2.i [2022-11-25 18:14:12,798 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/data/0cce367fe/9db4aec2bfc742f3a6071f3f65fc3636/FLAG2ea45c774 [2022-11-25 18:14:12,812 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/data/0cce367fe/9db4aec2bfc742f3a6071f3f65fc3636 [2022-11-25 18:14:12,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:14:12,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:14:12,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:14:12,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:14:12,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:14:12,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:14:12" (1/1) ... [2022-11-25 18:14:12,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee90e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:12, skipping insertion in model container [2022-11-25 18:14:12,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:14:12" (1/1) ... [2022-11-25 18:14:12,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:14:12,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:14:13,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:14:13,341 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-25 18:14:13,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54c42abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:13, skipping insertion in model container [2022-11-25 18:14:13,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:14:13,342 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 18:14:13,348 INFO L158 Benchmark]: Toolchain (without parser) took 530.51ms. Allocated memory is still 134.2MB. Free memory was 101.9MB in the beginning and 89.8MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:14:13,349 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:14:13,350 INFO L158 Benchmark]: CACSL2BoogieTranslator took 524.29ms. Allocated memory is still 134.2MB. Free memory was 101.5MB in the beginning and 89.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:14:13,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 524.29ms. Allocated memory is still 134.2MB. Free memory was 101.5MB in the beginning and 89.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 551]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:14:15,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:14:15,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:14:15,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:14:15,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:14:15,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:14:15,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:14:15,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:14:15,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:14:15,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:14:15,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:14:15,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:14:15,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:14:15,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:14:15,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:14:15,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:14:15,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:14:15,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:14:15,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:14:15,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:14:15,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:14:15,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:14:15,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:14:15,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:14:15,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:14:15,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:14:15,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:14:15,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:14:15,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:14:15,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:14:15,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:14:15,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:14:15,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:14:15,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:14:15,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:14:15,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:14:15,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:14:15,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:14:15,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:14:15,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:14:15,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:14:16,000 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 18:14:16,037 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:14:16,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:14:16,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:14:16,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:14:16,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:14:16,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:14:16,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:14:16,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:14:16,045 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:14:16,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:14:16,047 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:14:16,047 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:14:16,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:14:16,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:14:16,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:14:16,048 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:14:16,048 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:14:16,048 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:14:16,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:14:16,049 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:14:16,049 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:14:16,049 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:14:16,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:14:16,049 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:14:16,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:14:16,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:14:16,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:14:16,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:14:16,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:14:16,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:14:16,051 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:14:16,051 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:14:16,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:14:16,052 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:14:16,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:14:16,052 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:14:16,053 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 [2022-11-25 18:14:16,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:14:16,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:14:16,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:14:16,482 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:14:16,482 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:14:16,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/memsafety/test-0102-2.i [2022-11-25 18:14:19,773 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:14:20,152 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:14:20,152 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/sv-benchmarks/c/memsafety/test-0102-2.i [2022-11-25 18:14:20,166 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/data/4e167955e/0673678be930454d936d5106c131f77c/FLAG28030b658 [2022-11-25 18:14:20,181 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/data/4e167955e/0673678be930454d936d5106c131f77c [2022-11-25 18:14:20,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:14:20,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:14:20,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:14:20,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:14:20,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:14:20,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:14:20" (1/1) ... [2022-11-25 18:14:20,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575c2266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20, skipping insertion in model container [2022-11-25 18:14:20,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:14:20" (1/1) ... [2022-11-25 18:14:20,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:14:20,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:14:20,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:14:20,745 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 18:14:20,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:14:20,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:14:20,833 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:14:20,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:14:20,944 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:14:20,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20 WrapperNode [2022-11-25 18:14:20,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:14:20,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:14:20,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:14:20,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:14:20,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20" (1/1) ... [2022-11-25 18:14:20,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20" (1/1) ... [2022-11-25 18:14:21,040 INFO L138 Inliner]: procedures = 136, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 101 [2022-11-25 18:14:21,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:14:21,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:14:21,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:14:21,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:14:21,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20" (1/1) ... [2022-11-25 18:14:21,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20" (1/1) ... [2022-11-25 18:14:21,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20" (1/1) ... [2022-11-25 18:14:21,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20" (1/1) ... [2022-11-25 18:14:21,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20" (1/1) ... [2022-11-25 18:14:21,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20" (1/1) ... [2022-11-25 18:14:21,126 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20" (1/1) ... [2022-11-25 18:14:21,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20" (1/1) ... [2022-11-25 18:14:21,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:14:21,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:14:21,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:14:21,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:14:21,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20" (1/1) ... [2022-11-25 18:14:21,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:14:21,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:14:21,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:14:21,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:14:21,238 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-25 18:14:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-25 18:14:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:14:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:14:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure create_sub_list [2022-11-25 18:14:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sub_list [2022-11-25 18:14:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:14:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 18:14:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 18:14:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 18:14:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:14:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 18:14:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:14:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:14:21,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:14:21,448 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:14:21,450 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:14:21,947 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:14:21,954 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:14:21,954 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 18:14:21,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:14:21 BoogieIcfgContainer [2022-11-25 18:14:21,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:14:21,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:14:21,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:14:21,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:14:21,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:14:20" (1/3) ... [2022-11-25 18:14:21,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302041c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:14:21, skipping insertion in model container [2022-11-25 18:14:21,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:20" (2/3) ... [2022-11-25 18:14:21,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302041c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:14:21, skipping insertion in model container [2022-11-25 18:14:21,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:14:21" (3/3) ... [2022-11-25 18:14:21,995 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0102-2.i [2022-11-25 18:14:22,016 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:14:22,016 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2022-11-25 18:14:22,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:14:22,082 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@470bb856, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:14:22,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-25 18:14:22,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 45 states have (on average 1.9111111111111112) internal successors, (86), 76 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:14:22,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 18:14:22,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:22,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:14:22,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:22,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:22,103 INFO L85 PathProgramCache]: Analyzing trace with hash 60205689, now seen corresponding path program 1 times [2022-11-25 18:14:22,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:22,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754660251] [2022-11-25 18:14:22,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:22,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:22,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:22,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:22,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 18:14:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:22,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 18:14:22,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:22,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:22,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:22,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754660251] [2022-11-25 18:14:22,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754660251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:22,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:22,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:14:22,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463542903] [2022-11-25 18:14:22,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:22,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:14:22,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:22,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:14:22,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:14:22,323 INFO L87 Difference]: Start difference. First operand has 83 states, 45 states have (on average 1.9111111111111112) internal successors, (86), 76 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-25 18:14:22,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:22,377 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2022-11-25 18:14:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:14:22,392 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-25 18:14:22,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:22,401 INFO L225 Difference]: With dead ends: 83 [2022-11-25 18:14:22,407 INFO L226 Difference]: Without dead ends: 81 [2022-11-25 18:14:22,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:14:22,414 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:22,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:14:22,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-25 18:14:22,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-25 18:14:22,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 74 states have internal predecessors, (78), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:14:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2022-11-25 18:14:22,486 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 5 [2022-11-25 18:14:22,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:22,487 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2022-11-25 18:14:22,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-25 18:14:22,488 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2022-11-25 18:14:22,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 18:14:22,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:22,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:22,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:14:22,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:22,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:22,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:22,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2005144647, now seen corresponding path program 1 times [2022-11-25 18:14:22,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:22,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111155970] [2022-11-25 18:14:22,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:22,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:22,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:22,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:22,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 18:14:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:22,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:14:22,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:22,844 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:14:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:22,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:22,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:22,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111155970] [2022-11-25 18:14:22,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111155970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:22,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:22,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:14:22,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588825351] [2022-11-25 18:14:22,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:22,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:14:22,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:22,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:14:22,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:14:22,896 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:23,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:23,331 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-11-25 18:14:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:14:23,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 18:14:23,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:23,338 INFO L225 Difference]: With dead ends: 108 [2022-11-25 18:14:23,338 INFO L226 Difference]: Without dead ends: 108 [2022-11-25 18:14:23,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:14:23,340 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 60 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:23,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 162 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 18:14:23,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-25 18:14:23,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 79. [2022-11-25 18:14:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 72 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:14:23,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2022-11-25 18:14:23,349 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 7 [2022-11-25 18:14:23,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:23,350 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2022-11-25 18:14:23,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:23,350 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2022-11-25 18:14:23,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 18:14:23,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:23,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:23,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:14:23,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:23,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:23,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:23,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2005144648, now seen corresponding path program 1 times [2022-11-25 18:14:23,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:23,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348991079] [2022-11-25 18:14:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:23,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:23,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:23,556 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:23,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 18:14:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:23,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:14:23,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:23,647 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:14:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:23,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:23,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:23,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348991079] [2022-11-25 18:14:23,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348991079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:23,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:23,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:14:23,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676628640] [2022-11-25 18:14:23,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:23,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:14:23,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:23,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:14:23,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:14:23,715 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:24,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:24,053 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2022-11-25 18:14:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:14:24,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 18:14:24,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:24,056 INFO L225 Difference]: With dead ends: 83 [2022-11-25 18:14:24,056 INFO L226 Difference]: Without dead ends: 83 [2022-11-25 18:14:24,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:14:24,058 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 5 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:24,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 234 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 18:14:24,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-25 18:14:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2022-11-25 18:14:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.6808510638297873) internal successors, (79), 74 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:14:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2022-11-25 18:14:24,073 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 7 [2022-11-25 18:14:24,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:24,073 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2022-11-25 18:14:24,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:24,074 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2022-11-25 18:14:24,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 18:14:24,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:24,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:24,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:14:24,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:24,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting create_sub_listErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:24,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:24,287 INFO L85 PathProgramCache]: Analyzing trace with hash 859208239, now seen corresponding path program 1 times [2022-11-25 18:14:24,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:24,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580919745] [2022-11-25 18:14:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:24,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:24,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:24,290 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:24,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 18:14:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:24,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:14:24,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:24,423 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:14:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:24,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:24,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:24,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580919745] [2022-11-25 18:14:24,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580919745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:24,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:24,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:14:24,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405433853] [2022-11-25 18:14:24,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:24,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:14:24,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:24,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:14:24,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:14:24,445 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:24,584 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2022-11-25 18:14:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:14:24,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-25 18:14:24,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:24,585 INFO L225 Difference]: With dead ends: 82 [2022-11-25 18:14:24,585 INFO L226 Difference]: Without dead ends: 82 [2022-11-25 18:14:24,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:14:24,587 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:24,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 122 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:14:24,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-25 18:14:24,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2022-11-25 18:14:24,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 47 states have (on average 1.6595744680851063) internal successors, (78), 73 states have internal predecessors, (78), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:14:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2022-11-25 18:14:24,601 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 11 [2022-11-25 18:14:24,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:24,603 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2022-11-25 18:14:24,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2022-11-25 18:14:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 18:14:24,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:24,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:24,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:14:24,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:24,823 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting create_sub_listErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:24,823 INFO L85 PathProgramCache]: Analyzing trace with hash 859208240, now seen corresponding path program 1 times [2022-11-25 18:14:24,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:24,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383924397] [2022-11-25 18:14:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:24,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:24,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:24,825 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:24,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 18:14:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:24,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:14:24,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:24,948 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:14:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:24,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:24,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:24,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383924397] [2022-11-25 18:14:24,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383924397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:24,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:24,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:14:24,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928116548] [2022-11-25 18:14:24,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:24,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:14:24,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:24,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:14:24,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:14:24,983 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:25,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:25,138 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2022-11-25 18:14:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:14:25,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-25 18:14:25,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:25,141 INFO L225 Difference]: With dead ends: 81 [2022-11-25 18:14:25,141 INFO L226 Difference]: Without dead ends: 81 [2022-11-25 18:14:25,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:14:25,142 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 5 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:25,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 126 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:14:25,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-25 18:14:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2022-11-25 18:14:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 72 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:14:25,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2022-11-25 18:14:25,160 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 11 [2022-11-25 18:14:25,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:25,161 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2022-11-25 18:14:25,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:25,161 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2022-11-25 18:14:25,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 18:14:25,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:25,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:25,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:14:25,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:25,366 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting list_add_tailErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:25,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:25,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1332328513, now seen corresponding path program 1 times [2022-11-25 18:14:25,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:25,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590992327] [2022-11-25 18:14:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:25,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:25,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:25,368 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:25,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 18:14:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:25,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 18:14:25,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:25,522 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:14:25,611 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 18:14:25,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:14:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:25,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:25,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:25,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590992327] [2022-11-25 18:14:25,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590992327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:25,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:25,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:14:25,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005573628] [2022-11-25 18:14:25,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:25,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:14:25,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:25,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:14:25,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:14:25,702 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:26,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:26,276 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2022-11-25 18:14:26,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:14:26,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-25 18:14:26,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:26,278 INFO L225 Difference]: With dead ends: 129 [2022-11-25 18:14:26,278 INFO L226 Difference]: Without dead ends: 129 [2022-11-25 18:14:26,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:14:26,279 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 108 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:26,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 235 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 18:14:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-25 18:14:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 90. [2022-11-25 18:14:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 81 states have internal predecessors, (95), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:14:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2022-11-25 18:14:26,287 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 14 [2022-11-25 18:14:26,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:26,287 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2022-11-25 18:14:26,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:26,288 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2022-11-25 18:14:26,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 18:14:26,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:26,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:26,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:14:26,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:26,501 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:26,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:26,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1332328512, now seen corresponding path program 1 times [2022-11-25 18:14:26,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:26,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670547247] [2022-11-25 18:14:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:26,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:26,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:26,504 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:26,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 18:14:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:26,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 18:14:26,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:26,698 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:14:26,704 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:14:26,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:26,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:14:26,902 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:14:26,902 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:14:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:26,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:26,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:26,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670547247] [2022-11-25 18:14:26,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670547247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:26,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:26,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:14:26,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518878584] [2022-11-25 18:14:26,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:26,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:14:26,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:26,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:14:26,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:14:26,997 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:27,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:27,737 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2022-11-25 18:14:27,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:14:27,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-25 18:14:27,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:27,739 INFO L225 Difference]: With dead ends: 117 [2022-11-25 18:14:27,739 INFO L226 Difference]: Without dead ends: 117 [2022-11-25 18:14:27,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:14:27,740 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 52 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:27,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 298 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 18:14:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-25 18:14:27,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2022-11-25 18:14:27,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.676056338028169) internal successors, (119), 97 states have internal predecessors, (119), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 18:14:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2022-11-25 18:14:27,749 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 14 [2022-11-25 18:14:27,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:27,749 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2022-11-25 18:14:27,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:27,750 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2022-11-25 18:14:27,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-25 18:14:27,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:27,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:27,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:14:27,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:27,964 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting list_add_tailErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:27,965 INFO L85 PathProgramCache]: Analyzing trace with hash -467443808, now seen corresponding path program 1 times [2022-11-25 18:14:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:27,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463113700] [2022-11-25 18:14:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:27,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:27,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:27,967 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:27,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 18:14:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:28,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:14:28,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:28,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:28,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:28,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463113700] [2022-11-25 18:14:28,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463113700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:28,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:28,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:14:28,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777305476] [2022-11-25 18:14:28,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:28,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:14:28,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:28,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:14:28,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:14:28,130 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:28,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:28,293 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2022-11-25 18:14:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:14:28,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-25 18:14:28,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:28,297 INFO L225 Difference]: With dead ends: 107 [2022-11-25 18:14:28,297 INFO L226 Difference]: Without dead ends: 107 [2022-11-25 18:14:28,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:14:28,297 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 27 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:28,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 154 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:14:28,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-25 18:14:28,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-25 18:14:28,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 71 states have (on average 1.6338028169014085) internal successors, (116), 96 states have internal predecessors, (116), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 18:14:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 126 transitions. [2022-11-25 18:14:28,303 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 126 transitions. Word has length 16 [2022-11-25 18:14:28,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:28,304 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 126 transitions. [2022-11-25 18:14:28,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:28,304 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 126 transitions. [2022-11-25 18:14:28,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-25 18:14:28,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:28,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:28,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:14:28,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:28,505 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting list_add_tailErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:28,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:28,505 INFO L85 PathProgramCache]: Analyzing trace with hash -467443807, now seen corresponding path program 1 times [2022-11-25 18:14:28,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:28,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619520721] [2022-11-25 18:14:28,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:28,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:28,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:28,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:28,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-25 18:14:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:28,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 18:14:28,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:28,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:28,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:28,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:28,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619520721] [2022-11-25 18:14:28,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619520721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:28,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:28,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 18:14:28,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305049770] [2022-11-25 18:14:28,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:28,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:14:28,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:28,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:14:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:14:28,803 INFO L87 Difference]: Start difference. First operand 107 states and 126 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:29,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:29,268 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2022-11-25 18:14:29,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:14:29,269 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-25 18:14:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:29,270 INFO L225 Difference]: With dead ends: 115 [2022-11-25 18:14:29,270 INFO L226 Difference]: Without dead ends: 115 [2022-11-25 18:14:29,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-25 18:14:29,271 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 113 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:29,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 456 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 18:14:29,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-25 18:14:29,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2022-11-25 18:14:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 71 states have (on average 1.619718309859155) internal successors, (115), 96 states have internal predecessors, (115), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 18:14:29,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2022-11-25 18:14:29,277 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 16 [2022-11-25 18:14:29,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:29,278 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2022-11-25 18:14:29,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:29,278 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2022-11-25 18:14:29,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 18:14:29,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:29,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:29,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:14:29,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:29,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting list_add_tailErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:29,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1605856063, now seen corresponding path program 1 times [2022-11-25 18:14:29,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:29,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592410148] [2022-11-25 18:14:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:29,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:29,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:29,482 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:29,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-25 18:14:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:29,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:14:29,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:29,655 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:14:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:29,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:29,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:29,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592410148] [2022-11-25 18:14:29,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592410148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:29,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:29,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:14:29,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657596817] [2022-11-25 18:14:29,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:29,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:14:29,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:29,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:14:29,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:14:29,705 INFO L87 Difference]: Start difference. First operand 107 states and 125 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:30,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:30,070 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2022-11-25 18:14:30,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:14:30,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 18:14:30,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:30,072 INFO L225 Difference]: With dead ends: 114 [2022-11-25 18:14:30,072 INFO L226 Difference]: Without dead ends: 114 [2022-11-25 18:14:30,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:14:30,073 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 49 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:30,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 226 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 18:14:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-25 18:14:30,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2022-11-25 18:14:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.5492957746478873) internal successors, (110), 95 states have internal predecessors, (110), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 18:14:30,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2022-11-25 18:14:30,078 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 17 [2022-11-25 18:14:30,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:30,085 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2022-11-25 18:14:30,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:30,086 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2022-11-25 18:14:30,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 18:14:30,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:30,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:30,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:14:30,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:30,299 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting list_add_tailErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:30,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1605856062, now seen corresponding path program 1 times [2022-11-25 18:14:30,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:30,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997310991] [2022-11-25 18:14:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:30,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:30,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:30,301 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:30,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-25 18:14:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:30,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 18:14:30,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:30,445 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:14:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:30,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:30,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:30,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997310991] [2022-11-25 18:14:30,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997310991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:30,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:30,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:14:30,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528923479] [2022-11-25 18:14:30,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:30,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:14:30,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:30,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:14:30,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:14:30,547 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:31,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:31,036 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2022-11-25 18:14:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:14:31,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 18:14:31,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:31,038 INFO L225 Difference]: With dead ends: 112 [2022-11-25 18:14:31,038 INFO L226 Difference]: Without dead ends: 112 [2022-11-25 18:14:31,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:14:31,039 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 36 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:31,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 246 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 18:14:31,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-25 18:14:31,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2022-11-25 18:14:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 95 states have internal predecessors, (106), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 18:14:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2022-11-25 18:14:31,045 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 17 [2022-11-25 18:14:31,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:31,045 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2022-11-25 18:14:31,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2022-11-25 18:14:31,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 18:14:31,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:31,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:31,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-25 18:14:31,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:31,247 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:31,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1334414076, now seen corresponding path program 1 times [2022-11-25 18:14:31,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:31,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021035792] [2022-11-25 18:14:31,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:31,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:31,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:31,249 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:31,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-25 18:14:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:31,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 18:14:31,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:31,459 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:14:31,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:14:31,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:14:31,571 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:14:31,572 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:14:31,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:14:31,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 18:14:31,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:31,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:31,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:31,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021035792] [2022-11-25 18:14:31,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021035792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:31,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:31,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 18:14:31,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072978487] [2022-11-25 18:14:31,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:31,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:14:31,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:31,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:14:31,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:14:31,765 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:32,978 INFO L93 Difference]: Finished difference Result 162 states and 177 transitions. [2022-11-25 18:14:32,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:14:32,980 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-25 18:14:32,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:32,982 INFO L225 Difference]: With dead ends: 162 [2022-11-25 18:14:32,982 INFO L226 Difference]: Without dead ends: 162 [2022-11-25 18:14:32,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-25 18:14:32,983 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 80 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:32,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 356 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 18:14:32,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-25 18:14:32,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 128. [2022-11-25 18:14:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 115 states have internal predecessors, (130), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 18:14:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 144 transitions. [2022-11-25 18:14:32,993 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 144 transitions. Word has length 19 [2022-11-25 18:14:32,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:32,994 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 144 transitions. [2022-11-25 18:14:32,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:32,994 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 144 transitions. [2022-11-25 18:14:32,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 18:14:32,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:32,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:33,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-25 18:14:33,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:33,209 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:33,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1334414075, now seen corresponding path program 1 times [2022-11-25 18:14:33,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:33,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124307800] [2022-11-25 18:14:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:33,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:33,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:33,211 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:33,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-25 18:14:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:33,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-25 18:14:33,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:33,495 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:14:33,503 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:14:33,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:14:33,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:14:33,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:33,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:14:33,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:33,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:14:33,746 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:14:33,746 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:14:33,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:14:33,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 18:14:33,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 18:14:34,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:14:34,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:14:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:34,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:34,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:34,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124307800] [2022-11-25 18:14:34,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124307800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:34,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:34,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 18:14:34,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631959793] [2022-11-25 18:14:34,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:34,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:14:34,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:34,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:14:34,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:14:34,118 INFO L87 Difference]: Start difference. First operand 128 states and 144 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:35,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:35,513 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2022-11-25 18:14:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:14:35,514 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-25 18:14:35,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:35,516 INFO L225 Difference]: With dead ends: 131 [2022-11-25 18:14:35,516 INFO L226 Difference]: Without dead ends: 131 [2022-11-25 18:14:35,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-25 18:14:35,518 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 33 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:35,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 426 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 18:14:35,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-25 18:14:35,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-11-25 18:14:35,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 118 states have internal predecessors, (131), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 18:14:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2022-11-25 18:14:35,527 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 19 [2022-11-25 18:14:35,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:35,527 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2022-11-25 18:14:35,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:35,528 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2022-11-25 18:14:35,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 18:14:35,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:35,529 INFO L195 NwaCegarLoop]: 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] [2022-11-25 18:14:35,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-25 18:14:35,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:35,745 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:35,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:35,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1965497160, now seen corresponding path program 1 times [2022-11-25 18:14:35,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:35,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820817796] [2022-11-25 18:14:35,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:35,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:35,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:35,749 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:35,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-25 18:14:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:35,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 18:14:35,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:36,010 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:14:36,016 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:14:36,106 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_448 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_448))) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)))) is different from true [2022-11-25 18:14:36,133 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:14:36,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:36,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:14:36,232 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:14:36,232 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:14:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:36,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:14:38,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:38,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820817796] [2022-11-25 18:14:38,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820817796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:14:38,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1823677535] [2022-11-25 18:14:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:38,869 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:14:38,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:14:38,871 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:14:38,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-25 18:14:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:39,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-25 18:14:39,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:39,429 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:14:39,437 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:14:39,677 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:14:40,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:40,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:14:40,079 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:14:40,079 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:14:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:40,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:14:41,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1823677535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:14:41,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:14:41,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 13 [2022-11-25 18:14:41,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791790151] [2022-11-25 18:14:41,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:14:41,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 18:14:41,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:41,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 18:14:41,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=4, NotChecked=32, Total=342 [2022-11-25 18:14:41,022 INFO L87 Difference]: Start difference. First operand 131 states and 145 transitions. Second operand has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 18:14:44,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:14:48,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:14:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:50,955 INFO L93 Difference]: Finished difference Result 146 states and 164 transitions. [2022-11-25 18:14:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:14:50,957 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2022-11-25 18:14:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:50,958 INFO L225 Difference]: With dead ends: 146 [2022-11-25 18:14:50,958 INFO L226 Difference]: Without dead ends: 146 [2022-11-25 18:14:50,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=80, Invalid=470, Unknown=6, NotChecked=44, Total=600 [2022-11-25 18:14:50,959 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 65 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:50,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 394 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 412 Invalid, 2 Unknown, 90 Unchecked, 5.4s Time] [2022-11-25 18:14:50,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-25 18:14:50,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 139. [2022-11-25 18:14:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 99 states have (on average 1.393939393939394) internal successors, (138), 123 states have internal predecessors, (138), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-25 18:14:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions. [2022-11-25 18:14:50,967 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 29 [2022-11-25 18:14:50,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:50,968 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 155 transitions. [2022-11-25 18:14:50,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 18:14:50,968 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions. [2022-11-25 18:14:50,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-25 18:14:50,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:50,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:50,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2022-11-25 18:14:51,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-25 18:14:51,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:51,374 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:14:51,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:51,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1572542800, now seen corresponding path program 1 times [2022-11-25 18:14:51,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:51,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062749836] [2022-11-25 18:14:51,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:51,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:14:51,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:51,376 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:14:51,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-25 18:14:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:51,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-25 18:14:51,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:52,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:52,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 18:14:52,539 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:14:52,540 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:14:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:52,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:14:57,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-11-25 18:14:57,344 INFO L321 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2022-11-25 18:14:57,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 67 [2022-11-25 18:14:58,292 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 18:14:58,292 INFO L350 Elim1Store]: Elim1 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 38 treesize of output 32 [2022-11-25 18:14:58,325 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 18:14:58,325 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 14 [2022-11-25 18:14:59,051 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:14:59,051 INFO L350 Elim1Store]: Elim1 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 38 treesize of output 40 [2022-11-25 18:14:59,224 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 18:14:59,224 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 14 [2022-11-25 18:14:59,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:59,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:59,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062749836] [2022-11-25 18:14:59,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062749836] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:14:59,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:14:59,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2022-11-25 18:14:59,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801041142] [2022-11-25 18:14:59,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:14:59,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 18:14:59,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:59,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 18:14:59,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2022-11-25 18:14:59,573 INFO L87 Difference]: Start difference. First operand 139 states and 155 transitions. Second operand has 31 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 25 states have internal predecessors, (58), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:15:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:15:06,426 INFO L93 Difference]: Finished difference Result 168 states and 180 transitions. [2022-11-25 18:15:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 18:15:06,427 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 25 states have internal predecessors, (58), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2022-11-25 18:15:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:15:06,428 INFO L225 Difference]: With dead ends: 168 [2022-11-25 18:15:06,428 INFO L226 Difference]: Without dead ends: 168 [2022-11-25 18:15:06,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=231, Invalid=1575, Unknown=0, NotChecked=0, Total=1806 [2022-11-25 18:15:06,430 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 296 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:15:06,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 597 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-25 18:15:06,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-25 18:15:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 136. [2022-11-25 18:15:06,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 98 states have (on average 1.336734693877551) internal successors, (131), 120 states have internal predecessors, (131), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-25 18:15:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 148 transitions. [2022-11-25 18:15:06,436 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 148 transitions. Word has length 36 [2022-11-25 18:15:06,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:15:06,436 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 148 transitions. [2022-11-25 18:15:06,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 25 states have internal predecessors, (58), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:15:06,436 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 148 transitions. [2022-11-25 18:15:06,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-25 18:15:06,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:15:06,437 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:06,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-25 18:15:06,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:15:06,638 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:15:06,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:06,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1746009876, now seen corresponding path program 1 times [2022-11-25 18:15:06,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:15:06,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159704920] [2022-11-25 18:15:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:06,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:15:06,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:15:06,640 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:15:06,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-25 18:15:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:07,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-25 18:15:07,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:15:07,069 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:15:07,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:15:07,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:15:07,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:07,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:15:07,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:07,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:15:07,253 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:15:07,253 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:15:07,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:15:07,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:15:07,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:15:07,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:15:08,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-25 18:15:08,885 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-25 18:15:08,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 128 [2022-11-25 18:15:08,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 96 [2022-11-25 18:15:08,916 INFO L350 Elim1Store]: Elim1 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 42 treesize of output 24 [2022-11-25 18:15:08,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 30 [2022-11-25 18:15:09,175 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-25 18:15:09,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-25 18:15:09,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-25 18:15:09,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2022-11-25 18:15:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:10,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:15:10,800 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_713 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_713) |c_create_sub_list_insert_sub_~head#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (_ bv1 1)))) is different from false [2022-11-25 18:15:12,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:15:12,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159704920] [2022-11-25 18:15:12,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159704920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:15:12,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1352641326] [2022-11-25 18:15:12,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:12,988 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:15:12,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:15:12,989 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:15:12,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-25 18:15:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:13,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-25 18:15:13,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:15:13,853 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:15:13,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:15:13,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:15:13,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:13,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:15:13,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:13,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:15:14,007 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:15:14,007 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:15:14,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:15:14,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:15:14,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:15:14,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:15:15,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-25 18:15:15,228 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-25 18:15:15,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 128 [2022-11-25 18:15:15,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 26 [2022-11-25 18:15:15,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:15,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 84 [2022-11-25 18:15:15,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 22 [2022-11-25 18:15:15,427 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-25 18:15:15,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-25 18:15:15,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-25 18:15:16,166 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 15 [2022-11-25 18:15:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:16,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:15:16,549 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_835 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_835) |c_create_sub_list_insert_sub_~head#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (_ bv1 1)))) is different from false [2022-11-25 18:15:18,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1352641326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:15:18,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:15:18,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 27 [2022-11-25 18:15:18,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071243756] [2022-11-25 18:15:18,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:15:18,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 18:15:18,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:15:18,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 18:15:18,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1190, Unknown=38, NotChecked=142, Total=1482 [2022-11-25 18:15:18,514 INFO L87 Difference]: Start difference. First operand 136 states and 148 transitions. Second operand has 28 states, 25 states have (on average 1.64) internal successors, (41), 24 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:15:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:15:28,778 INFO L93 Difference]: Finished difference Result 156 states and 169 transitions. [2022-11-25 18:15:28,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-25 18:15:28,779 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 1.64) internal successors, (41), 24 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-11-25 18:15:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:15:28,780 INFO L225 Difference]: With dead ends: 156 [2022-11-25 18:15:28,780 INFO L226 Difference]: Without dead ends: 156 [2022-11-25 18:15:28,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 55 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=303, Invalid=2713, Unknown=72, NotChecked=218, Total=3306 [2022-11-25 18:15:28,782 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 74 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 23 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:15:28,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1048 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1185 Invalid, 14 Unknown, 0 Unchecked, 5.7s Time] [2022-11-25 18:15:28,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-25 18:15:28,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2022-11-25 18:15:28,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 110 states have (on average 1.309090909090909) internal successors, (144), 133 states have internal predecessors, (144), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (10), 7 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-25 18:15:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 163 transitions. [2022-11-25 18:15:28,788 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 163 transitions. Word has length 35 [2022-11-25 18:15:28,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:15:28,788 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 163 transitions. [2022-11-25 18:15:28,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 1.64) internal successors, (41), 24 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:15:28,789 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 163 transitions. [2022-11-25 18:15:28,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-25 18:15:28,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:15:28,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:28,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2022-11-25 18:15:29,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-25 18:15:29,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:15:29,197 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:15:29,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1746009877, now seen corresponding path program 1 times [2022-11-25 18:15:29,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:15:29,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496245005] [2022-11-25 18:15:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:29,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:15:29,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:15:29,199 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:15:29,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-25 18:15:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:29,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-25 18:15:29,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:15:29,697 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:15:29,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:15:29,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:15:29,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:29,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:15:29,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:29,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:15:29,959 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:15:29,959 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:15:29,987 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:15:30,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:15:30,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:15:30,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:15:30,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:15:32,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 79 [2022-11-25 18:15:32,468 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-25 18:15:32,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 162 treesize of output 188 [2022-11-25 18:15:32,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 60 [2022-11-25 18:15:32,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:32,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 106 [2022-11-25 18:15:32,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:32,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2022-11-25 18:15:32,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:32,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-11-25 18:15:33,006 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-25 18:15:33,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-25 18:15:33,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:15:33,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 18:15:33,246 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-25 18:15:33,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 64 [2022-11-25 18:15:33,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 18:15:33,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:15:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:33,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:15:35,217 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_965 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_965) |c_create_sub_list_insert_sub_~head#1.base|) .cse1))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_964 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_965 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_965) |c_create_sub_list_insert_sub_~head#1.base|) .cse1) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_964) |c_create_sub_list_insert_sub_~head#1.base|) .cse1)))))) is different from false [2022-11-25 18:15:46,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:15:46,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496245005] [2022-11-25 18:15:46,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496245005] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:15:46,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [773921190] [2022-11-25 18:15:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:46,745 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:15:46,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:15:46,746 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:15:46,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-25 18:15:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:48,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-25 18:15:48,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:15:48,107 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:15:48,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:15:48,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:15:48,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:48,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:15:48,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:48,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:15:48,212 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:15:48,273 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:15:48,273 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:15:48,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:15:48,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:15:48,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:15:48,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:15:53,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 86 [2022-11-25 18:15:53,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 71 [2022-11-25 18:15:53,622 INFO L321 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2022-11-25 18:15:53,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 150 [2022-11-25 18:15:53,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:53,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 106 [2022-11-25 18:15:53,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:53,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2022-11-25 18:15:53,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:53,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-11-25 18:15:54,293 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-25 18:15:54,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-25 18:15:54,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:15:54,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 18:15:54,833 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-25 18:15:54,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 64 [2022-11-25 18:15:54,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 18:15:54,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:15:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:55,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:15:55,334 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1104 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1105 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1104) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1105) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)))) (forall ((v_ArrVal_1104 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1104) |c_create_sub_list_insert_sub_~head#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))))) is different from false [2022-11-25 18:15:55,465 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (and (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_30| (_ BitVec 32))) (or (forall ((v_ArrVal_1104 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_30| v_ArrVal_1104) |c_create_sub_list_~sub#1.base|) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_30|))))) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_30| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_30|))) (forall ((v_ArrVal_1103 (_ BitVec 32)) (v_ArrVal_1104 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1105 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_30| v_ArrVal_1104) |c_create_sub_list_~sub#1.base|) .cse1)) (select (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_30| v_ArrVal_1103) (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_30| v_ArrVal_1105) |c_create_sub_list_~sub#1.base|) .cse1)))))))) is different from false [2022-11-25 18:16:06,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [773921190] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:16:06,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:16:06,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2022-11-25 18:16:06,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193579764] [2022-11-25 18:16:06,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:16:06,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 18:16:06,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:16:06,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 18:16:06,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1351, Unknown=27, NotChecked=228, Total=1722 [2022-11-25 18:16:06,597 INFO L87 Difference]: Start difference. First operand 150 states and 163 transitions. Second operand has 31 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 28 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 18:16:21,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:16:21,575 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2022-11-25 18:16:21,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 18:16:21,576 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 28 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-11-25 18:16:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:16:21,577 INFO L225 Difference]: With dead ends: 150 [2022-11-25 18:16:21,577 INFO L226 Difference]: Without dead ends: 150 [2022-11-25 18:16:21,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=213, Invalid=2315, Unknown=34, NotChecked=300, Total=2862 [2022-11-25 18:16:21,579 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 53 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 14 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:16:21,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 913 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1188 Invalid, 19 Unknown, 0 Unchecked, 7.7s Time] [2022-11-25 18:16:21,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-25 18:16:21,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-25 18:16:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 110 states have (on average 1.3) internal successors, (143), 133 states have internal predecessors, (143), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (10), 7 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-25 18:16:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2022-11-25 18:16:21,585 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 35 [2022-11-25 18:16:21,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:16:21,585 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2022-11-25 18:16:21,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 28 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 18:16:21,586 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2022-11-25 18:16:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 18:16:21,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:16:21,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:21,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-25 18:16:21,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-25 18:16:21,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 18:16:21,998 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:16:21,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:21,999 INFO L85 PathProgramCache]: Analyzing trace with hash 879107445, now seen corresponding path program 1 times [2022-11-25 18:16:21,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:16:21,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669109514] [2022-11-25 18:16:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:22,000 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:16:22,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:16:22,010 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:16:22,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-25 18:16:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:22,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-25 18:16:22,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:16:22,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:16:22,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:16:22,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:16:22,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:16:22,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:16:22,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:16:22,775 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:16:22,775 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:16:22,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:16:22,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:16:23,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:16:23,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:16:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:23,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:16:23,672 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:16:23,672 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 50 [2022-11-25 18:16:24,293 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1240 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1240) |c_create_sub_list_insert_sub_~head#1.base|) .cse0) |c_create_sub_list_insert_sub_~head#1.base|)) (forall ((v_ArrVal_1241 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1241) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)) (bvadd (_ bv8 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (forall ((v_ArrVal_1241 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1241) |c_create_sub_list_insert_sub_~head#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))))) is different from false [2022-11-25 18:16:27,461 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:16:27,461 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2022-11-25 18:16:27,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 32 [2022-11-25 18:16:27,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-25 18:16:27,508 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-25 18:16:27,509 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 1 [2022-11-25 18:16:27,542 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:16:27,542 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2022-11-25 18:16:27,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:16:27,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-25 18:16:28,688 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:16:28,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 62 [2022-11-25 18:16:29,022 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 18:16:29,022 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 15 [2022-11-25 18:16:29,060 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 18:16:29,060 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 15 [2022-11-25 18:16:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-25 18:16:29,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:16:29,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669109514] [2022-11-25 18:16:29,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669109514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:16:29,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:16:29,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 29 [2022-11-25 18:16:29,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728008923] [2022-11-25 18:16:29,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:16:29,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-25 18:16:29,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:16:29,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-25 18:16:29,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=731, Unknown=9, NotChecked=54, Total=870 [2022-11-25 18:16:29,094 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand has 30 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 7 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:16:31,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 18:16:52,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:16:52,338 INFO L93 Difference]: Finished difference Result 182 states and 194 transitions. [2022-11-25 18:16:52,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-25 18:16:52,339 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 7 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 41 [2022-11-25 18:16:52,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:16:52,340 INFO L225 Difference]: With dead ends: 182 [2022-11-25 18:16:52,340 INFO L226 Difference]: Without dead ends: 182 [2022-11-25 18:16:52,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=321, Invalid=2429, Unknown=10, NotChecked=102, Total=2862 [2022-11-25 18:16:52,341 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 236 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 32 mSolverCounterUnsat, 32 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 32 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:16:52,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 764 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1056 Invalid, 32 Unknown, 137 Unchecked, 10.2s Time] [2022-11-25 18:16:52,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-25 18:16:52,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 153. [2022-11-25 18:16:52,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 112 states have (on average 1.2857142857142858) internal successors, (144), 136 states have internal predecessors, (144), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (10), 7 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-25 18:16:52,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 163 transitions. [2022-11-25 18:16:52,352 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 163 transitions. Word has length 41 [2022-11-25 18:16:52,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:16:52,352 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 163 transitions. [2022-11-25 18:16:52,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 7 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:16:52,353 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 163 transitions. [2022-11-25 18:16:52,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-25 18:16:52,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:16:52,354 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:52,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-25 18:16:52,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:16:52,569 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:16:52,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:52,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1398479560, now seen corresponding path program 1 times [2022-11-25 18:16:52,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:16:52,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166672775] [2022-11-25 18:16:52,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:52,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:16:52,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:16:52,571 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:16:52,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-25 18:16:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:52,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 18:16:52,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:16:52,965 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:16:52,973 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:16:53,153 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:16:53,353 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:16:53,354 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:16:53,373 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_create_sub_list_insert_sub_~sub~0#1.base_38| (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32)) (v_ArrVal_1343 (_ BitVec 32)) (v_ArrVal_1342 (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |v_create_sub_list_insert_sub_~sub~0#1.base_38|)) (= (store (store |c_old(#length)| |v_create_sub_list_insert_sub_~sub~0#1.base_38| v_ArrVal_1342) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1343) |c_#length|) (not (= |c_create_sub_list_#in~sub#1.base| |create_sub_list_insert_sub_~sub~0#1.base|)))) is different from true [2022-11-25 18:16:53,435 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:16:53,436 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 18:16:53,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:16:53,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:16:53,551 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:16:53,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-11-25 18:16:53,580 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:16:53,580 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:16:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2022-11-25 18:16:53,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:16:54,339 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 18:16:54,340 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 14 [2022-11-25 18:17:00,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:17:00,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166672775] [2022-11-25 18:17:00,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166672775] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:17:00,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1196099836] [2022-11-25 18:17:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:00,665 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:17:00,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:17:00,667 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:17:00,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-25 18:17:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:01,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-25 18:17:01,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:17:01,513 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:17:01,521 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:17:01,825 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:17:02,046 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:17:02,046 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:17:02,251 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:17:02,251 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 18:17:02,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:17:02,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:17:02,837 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:17:02,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-11-25 18:17:02,860 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:17:02,860 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:17:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:17:02,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:17:03,784 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 18:17:03,784 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 14 [2022-11-25 18:17:06,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1196099836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:17:06,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:17:06,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 21 [2022-11-25 18:17:06,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521941666] [2022-11-25 18:17:06,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:17:06,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 18:17:06,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:17:06,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 18:17:06,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=582, Unknown=5, NotChecked=48, Total=702 [2022-11-25 18:17:06,647 INFO L87 Difference]: Start difference. First operand 153 states and 163 transitions. Second operand has 22 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 18:17:08,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:17:14,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:17:18,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:17:20,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:17:20,575 INFO L93 Difference]: Finished difference Result 252 states and 278 transitions. [2022-11-25 18:17:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 18:17:20,576 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 45 [2022-11-25 18:17:20,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:17:20,578 INFO L225 Difference]: With dead ends: 252 [2022-11-25 18:17:20,578 INFO L226 Difference]: Without dead ends: 252 [2022-11-25 18:17:20,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=117, Invalid=936, Unknown=7, NotChecked=62, Total=1122 [2022-11-25 18:17:20,579 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 162 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:17:20,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 488 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 939 Invalid, 3 Unknown, 134 Unchecked, 8.9s Time] [2022-11-25 18:17:20,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-25 18:17:20,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 155. [2022-11-25 18:17:20,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 114 states have (on average 1.2894736842105263) internal successors, (147), 137 states have internal predecessors, (147), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-25 18:17:20,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2022-11-25 18:17:20,598 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 45 [2022-11-25 18:17:20,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:17:20,599 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2022-11-25 18:17:20,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 18:17:20,599 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2022-11-25 18:17:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 18:17:20,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:17:20,600 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:17:20,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-11-25 18:17:20,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-25 18:17:21,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:17:21,007 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting list_add_tailErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:17:21,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:17:21,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1768276039, now seen corresponding path program 1 times [2022-11-25 18:17:21,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:17:21,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733674730] [2022-11-25 18:17:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:21,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:17:21,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:17:21,009 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:17:21,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-25 18:17:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:21,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 18:17:21,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:17:21,453 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:17:21,511 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:17:21,511 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:17:21,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-25 18:17:21,646 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:17:21,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:17:21,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:17:21,901 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base| (_ bv1 1)))) is different from true [2022-11-25 18:17:21,909 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:17:22,033 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 18:17:22,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:17:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-25 18:17:22,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:17:22,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:17:22,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733674730] [2022-11-25 18:17:22,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733674730] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:17:22,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [795605980] [2022-11-25 18:17:22,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:22,483 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:17:22,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:17:22,485 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:17:22,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-25 18:17:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:24,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 18:17:24,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:17:24,332 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 18:17:24,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:17:24,347 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-11-25 18:17:24,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:17:24,461 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-25 18:17:24,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 36 [2022-11-25 18:17:24,598 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-25 18:17:24,598 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 20 [2022-11-25 18:17:24,748 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:17:24,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:17:24,925 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-25 18:17:24,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 45 [2022-11-25 18:17:24,991 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-25 18:17:24,991 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 20 [2022-11-25 18:17:25,092 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:17:25,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:17:25,278 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-25 18:17:25,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 45 [2022-11-25 18:17:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 18:17:25,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:17:25,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [795605980] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:17:25,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:17:25,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2022-11-25 18:17:25,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245814417] [2022-11-25 18:17:25,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:17:25,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 18:17:25,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:17:25,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 18:17:25,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=499, Unknown=12, NotChecked=46, Total=650 [2022-11-25 18:17:25,877 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand has 21 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 18:17:29,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:17:29,076 INFO L93 Difference]: Finished difference Result 258 states and 282 transitions. [2022-11-25 18:17:29,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:17:29,077 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 51 [2022-11-25 18:17:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:17:29,078 INFO L225 Difference]: With dead ends: 258 [2022-11-25 18:17:29,079 INFO L226 Difference]: Without dead ends: 258 [2022-11-25 18:17:29,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 83 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=183, Invalid=798, Unknown=15, NotChecked=60, Total=1056 [2022-11-25 18:17:29,080 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 399 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 78 mSolverCounterUnsat, 204 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 204 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:17:29,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 450 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 664 Invalid, 204 Unknown, 99 Unchecked, 2.6s Time] [2022-11-25 18:17:29,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-25 18:17:29,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 178. [2022-11-25 18:17:29,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 155 states have internal predecessors, (172), 12 states have call successors, (12), 10 states have call predecessors, (12), 12 states have return successors, (19), 12 states have call predecessors, (19), 12 states have call successors, (19) [2022-11-25 18:17:29,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 203 transitions. [2022-11-25 18:17:29,088 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 203 transitions. Word has length 51 [2022-11-25 18:17:29,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:17:29,088 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 203 transitions. [2022-11-25 18:17:29,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 18:17:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 203 transitions. [2022-11-25 18:17:29,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 18:17:29,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:17:29,090 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:17:29,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-25 18:17:29,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-25 18:17:29,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:17:29,498 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:17:29,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:17:29,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1768276040, now seen corresponding path program 1 times [2022-11-25 18:17:29,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:17:29,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345637353] [2022-11-25 18:17:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:29,499 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:17:29,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:17:29,501 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:17:29,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-25 18:17:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:29,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 18:17:29,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:17:29,983 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:17:29,991 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:17:30,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:17:30,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:17:30,041 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:17:30,042 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:17:30,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:17:30,205 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:17:30,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:17:30,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:17:30,519 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| (_ bv12 32)))) is different from true [2022-11-25 18:17:30,531 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:17:30,612 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (= (select |c_#length| |create_sub_list_insert_sub_~sub~0#1.base|) (_ bv12 32))) (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| (_ bv12 32))))) is different from true [2022-11-25 18:17:30,682 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:17:30,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-25 18:17:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-25 18:17:31,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:17:31,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:17:31,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345637353] [2022-11-25 18:17:31,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345637353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:17:31,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [630249094] [2022-11-25 18:17:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:31,603 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:17:31,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:17:31,604 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:17:31,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-25 18:17:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:33,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 18:17:33,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:17:33,520 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:17:33,535 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-11-25 18:17:33,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:17:33,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:17:33,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:17:33,874 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:17:34,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:17:34,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:17:34,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:17:34,155 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:17:34,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:17:34,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:17:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 18:17:34,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:17:35,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [630249094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:17:35,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:17:35,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 19 [2022-11-25 18:17:35,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482383075] [2022-11-25 18:17:35,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:17:35,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 18:17:35,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:17:35,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 18:17:35,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=435, Unknown=4, NotChecked=86, Total=600 [2022-11-25 18:17:35,623 INFO L87 Difference]: Start difference. First operand 178 states and 203 transitions. Second operand has 20 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 18:17:39,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:17:39,508 INFO L93 Difference]: Finished difference Result 222 states and 245 transitions. [2022-11-25 18:17:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:17:39,509 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 51 [2022-11-25 18:17:39,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:17:39,510 INFO L225 Difference]: With dead ends: 222 [2022-11-25 18:17:39,511 INFO L226 Difference]: Without dead ends: 222 [2022-11-25 18:17:39,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 81 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=173, Invalid=815, Unknown=12, NotChecked=122, Total=1122 [2022-11-25 18:17:39,512 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 423 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 53 mSolverCounterUnsat, 102 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 102 IncrementalHoareTripleChecker+Unknown, 312 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:17:39,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 411 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 653 Invalid, 102 Unknown, 312 Unchecked, 2.9s Time] [2022-11-25 18:17:39,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-25 18:17:39,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 178. [2022-11-25 18:17:39,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 131 states have (on average 1.3053435114503817) internal successors, (171), 155 states have internal predecessors, (171), 12 states have call successors, (12), 10 states have call predecessors, (12), 12 states have return successors, (19), 12 states have call predecessors, (19), 12 states have call successors, (19) [2022-11-25 18:17:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 202 transitions. [2022-11-25 18:17:39,519 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 202 transitions. Word has length 51 [2022-11-25 18:17:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:17:39,520 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 202 transitions. [2022-11-25 18:17:39,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 18:17:39,520 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 202 transitions. [2022-11-25 18:17:39,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 18:17:39,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:17:39,521 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:17:39,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-25 18:17:39,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-25 18:17:39,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:17:39,931 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:17:39,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:17:39,931 INFO L85 PathProgramCache]: Analyzing trace with hash 636971300, now seen corresponding path program 2 times [2022-11-25 18:17:39,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:17:39,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828799532] [2022-11-25 18:17:39,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:17:39,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:17:39,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:17:39,933 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:17:39,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-25 18:17:40,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:17:40,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:17:40,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-25 18:17:40,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:17:40,715 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:17:40,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:17:40,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:17:40,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:17:40,856 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:17:40,856 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:17:40,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:17:41,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:17:41,347 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:17:41,347 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 22 [2022-11-25 18:17:41,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:17:41,501 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:17:41,502 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 26 [2022-11-25 18:17:43,151 INFO L321 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2022-11-25 18:17:43,151 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 46 [2022-11-25 18:17:43,347 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 3 [2022-11-25 18:17:43,475 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:17:43,475 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:17:43,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-25 18:17:43,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-25 18:17:45,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-25 18:17:45,084 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-25 18:17:45,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 46 [2022-11-25 18:17:45,353 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-25 18:17:45,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-25 18:17:45,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-25 18:17:45,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-25 18:17:46,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2022-11-25 18:17:46,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 18:17:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:17:46,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:17:49,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-25 18:17:51,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:17:51,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828799532] [2022-11-25 18:17:51,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828799532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:17:51,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2128521277] [2022-11-25 18:17:51,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:17:51,377 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:17:51,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:17:51,378 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:17:51,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-25 18:17:52,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:17:52,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206202352] [2022-11-25 18:17:52,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:17:52,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:17:52,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:17:52,177 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:17:52,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 1 [2022-11-25 18:17:52,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-25 18:17:53,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:17:53,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:17:53,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 116 conjunts are in the unsatisfiable core [2022-11-25 18:17:53,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:17:53,849 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:17:53,857 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:17:54,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:17:54,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:17:54,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:17:54,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:17:54,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:17:54,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:17:54,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:17:54,811 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:17:54,811 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:17:55,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:17:55,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:17:57,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-25 18:17:57,607 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-25 18:17:57,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 117 [2022-11-25 18:17:57,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 89 [2022-11-25 18:17:57,624 INFO L350 Elim1Store]: Elim1 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 42 treesize of output 24 [2022-11-25 18:17:57,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 30 [2022-11-25 18:17:57,716 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:17:57,717 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:17:57,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-25 18:17:57,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-25 18:18:00,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-25 18:18:00,297 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-25 18:18:00,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 46 [2022-11-25 18:18:00,410 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-25 18:18:00,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-25 18:18:00,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-25 18:18:01,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2022-11-25 18:18:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:18:01,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:18:02,253 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2379 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2379) |c_create_sub_list_insert_sub_~head#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (_ bv1 1)))) is different from false [2022-11-25 18:18:03,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206202352] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:18:03,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:18:03,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 55 [2022-11-25 18:18:03,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434835190] [2022-11-25 18:18:03,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:18:03,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-25 18:18:03,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:18:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-25 18:18:03,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=4362, Unknown=104, NotChecked=134, Total=4830 [2022-11-25 18:18:03,636 INFO L87 Difference]: Start difference. First operand 178 states and 202 transitions. Second operand has 56 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 49 states have internal predecessors, (76), 7 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 18:18:32,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:18:32,981 INFO L93 Difference]: Finished difference Result 179 states and 201 transitions. [2022-11-25 18:18:32,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-25 18:18:32,985 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 49 states have internal predecessors, (76), 7 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 51 [2022-11-25 18:18:32,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:18:32,986 INFO L225 Difference]: With dead ends: 179 [2022-11-25 18:18:32,986 INFO L226 Difference]: Without dead ends: 179 [2022-11-25 18:18:32,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2824 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=687, Invalid=9227, Unknown=190, NotChecked=198, Total=10302 [2022-11-25 18:18:32,988 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 120 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 44 mSolverCounterUnsat, 62 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 62 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:18:32,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1469 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2166 Invalid, 62 Unknown, 0 Unchecked, 11.5s Time] [2022-11-25 18:18:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-25 18:18:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2022-11-25 18:18:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 131 states have (on average 1.297709923664122) internal successors, (170), 155 states have internal predecessors, (170), 12 states have call successors, (12), 10 states have call predecessors, (12), 12 states have return successors, (19), 12 states have call predecessors, (19), 12 states have call successors, (19) [2022-11-25 18:18:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 201 transitions. [2022-11-25 18:18:32,995 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 201 transitions. Word has length 51 [2022-11-25 18:18:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:18:32,995 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 201 transitions. [2022-11-25 18:18:32,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 49 states have internal predecessors, (76), 7 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 18:18:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 201 transitions. [2022-11-25 18:18:32,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 18:18:32,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:32,996 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:33,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-25 18:18:33,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-25 18:18:33,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:18:33,396 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:18:33,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash 636971301, now seen corresponding path program 2 times [2022-11-25 18:18:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:18:33,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294650621] [2022-11-25 18:18:33,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:18:33,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:18:33,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:18:33,401 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:18:33,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-25 18:18:34,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:18:34,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:18:34,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-25 18:18:34,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:18:34,237 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:18:34,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:18:34,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:18:34,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:18:34,365 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:18:34,365 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:18:34,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:18:34,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:18:34,858 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:18:34,858 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 22 [2022-11-25 18:18:34,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:18:35,016 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:18:35,016 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 26 [2022-11-25 18:18:35,989 INFO L321 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2022-11-25 18:18:35,990 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 46 [2022-11-25 18:18:36,184 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 3 [2022-11-25 18:18:36,332 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:18:36,333 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:18:36,355 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:18:36,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-25 18:18:36,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-25 18:18:37,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:18:37,717 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:18:37,717 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 22 [2022-11-25 18:18:37,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:18:38,027 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:18:38,027 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 26 [2022-11-25 18:18:38,297 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-25 18:18:38,298 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 38 [2022-11-25 18:18:38,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:18:38,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-25 18:18:38,755 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-25 18:18:38,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 55 [2022-11-25 18:18:39,136 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-25 18:18:39,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-25 18:18:39,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:18:39,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-11-25 18:18:39,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 18:18:40,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2022-11-25 18:18:40,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:18:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:18:40,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:18:44,676 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:18:44,676 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 60 [2022-11-25 18:18:44,731 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:18:44,732 INFO L350 Elim1Store]: Elim1 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 1710 treesize of output 1619 [2022-11-25 18:18:44,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 801 treesize of output 737 [2022-11-25 18:18:44,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1538 treesize of output 1282 [2022-11-25 18:18:44,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1282 treesize of output 1154 [2022-11-25 18:18:46,433 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:18:46,433 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 75 [2022-11-25 18:18:46,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:18:46,497 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:18:46,498 INFO L350 Elim1Store]: Elim1 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 482 treesize of output 475 [2022-11-25 18:18:46,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 458 treesize of output 442 [2022-11-25 18:18:46,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 217 [2022-11-25 18:19:42,666 WARN L233 SmtUtils]: Spent 33.87s on a formula simplification. DAG size of input: 123 DAG size of output: 69 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:19:42,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:19:42,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294650621] [2022-11-25 18:19:42,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294650621] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:19:42,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [649962413] [2022-11-25 18:19:42,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:19:42,669 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:19:42,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:19:42,672 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:19:42,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-25 18:19:45,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:19:45,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:19:45,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 137 conjunts are in the unsatisfiable core [2022-11-25 18:19:45,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:19:45,628 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:19:45,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:19:45,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:19:46,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:19:46,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:19:46,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:19:46,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:19:46,130 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:19:46,131 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:19:46,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:19:46,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:19:50,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 43 [2022-11-25 18:19:50,480 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-25 18:19:50,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 117 [2022-11-25 18:19:50,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 26 [2022-11-25 18:19:50,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:19:50,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 77 [2022-11-25 18:19:50,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 22 [2022-11-25 18:19:50,663 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:19:50,663 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:19:50,697 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:19:50,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-25 18:19:50,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-25 18:19:51,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:19:51,569 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:19:51,570 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 22 [2022-11-25 18:19:51,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:19:51,894 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:19:51,894 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 26 [2022-11-25 18:19:52,265 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-25 18:19:52,265 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 38 [2022-11-25 18:19:52,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:19:52,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-25 18:19:52,857 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-25 18:19:52,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 55 [2022-11-25 18:19:53,077 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-25 18:19:53,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:19:53,178 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-25 18:19:53,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-25 18:19:53,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-11-25 18:19:53,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 18:19:54,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:19:54,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-25 18:19:54,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:19:54,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2022-11-25 18:19:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:19:56,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:20:02,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:20:02,409 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 75 [2022-11-25 18:20:02,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:20:02,494 INFO L350 Elim1Store]: Elim1 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 982 treesize of output 975 [2022-11-25 18:20:02,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 958 treesize of output 926 [2022-11-25 18:20:02,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 926 treesize of output 910 [2022-11-25 18:20:02,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 458 treesize of output 450 [2022-11-25 18:20:13,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-25 18:20:13,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:13,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-25 18:20:13,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-25 18:20:15,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:15,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-25 18:20:15,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-25 18:20:15,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-25 18:20:15,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:15,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:15,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2022-11-25 18:20:15,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:15,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-25 18:20:15,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-25 18:20:16,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-25 18:20:16,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:16,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2022-11-25 18:20:17,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-25 18:20:17,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:17,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-25 18:20:17,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-25 18:20:18,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:18,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2022-11-25 18:20:18,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:18,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2022-11-25 18:20:18,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:19,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:19,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-25 18:20:19,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-25 18:20:20,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-25 18:20:20,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:20,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:20,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2022-11-25 18:20:20,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:20,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-25 18:20:20,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-25 18:20:21,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-25 18:20:21,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-25 18:20:21,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2022-11-25 18:20:21,723 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:20:21,724 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 60 [2022-11-25 18:20:21,806 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:20:21,806 INFO L350 Elim1Store]: Elim1 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 474 treesize of output 455 [2022-11-25 18:20:21,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 210 [2022-11-25 18:20:21,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 422 treesize of output 390 [2022-11-25 18:20:21,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 390 treesize of output 326 [2022-11-25 18:20:25,003 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse134 (select |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~head#1.base|)) (.cse135 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (let ((.cse12 (select .cse134 .cse135))) (let ((.cse4 (= .cse12 |c_create_sub_list_~sub#1.base|))) (let ((.cse8 (= |c_create_sub_list_insert_sub_~sub~0#1.base| |c_create_sub_list_~sub#1.base|)) (.cse14 (bvadd (_ bv8 32) |c_create_sub_list_~sub#1.offset|)) (.cse11 (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~head#1.base| (store .cse134 .cse135 |c_create_sub_list_insert_sub_~sub~0#1.base|))) (.cse13 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) (.cse5 (not .cse4))) (let ((.cse20 (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse133 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse132 (select .cse133 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse132) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse132) (not (bvule .cse14 (select .cse133 |c_create_sub_list_~sub#1.base|))))))) .cse5)) (.cse17 (or .cse5 (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse131 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) (select .cse131 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse131 |c_create_sub_list_~sub#1.base|)))))))) (.cse65 (not .cse8)) (.cse9 (bvadd (_ bv8 32) |c_create_sub_list_insert_sub_~sub~0#1.offset|))) (let ((.cse24 (or .cse5 (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse130 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse129 (select .cse130 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule .cse9 .cse129) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse129) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse130 |c_create_sub_list_~sub#1.base|))))))))) (.cse33 (= |c_create_sub_list_insert_sub_~head#1.offset| |c_create_sub_list_~sub#1.offset|)) (.cse64 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (not (bvule .cse14 (select (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)) |c_create_sub_list_~sub#1.base|)))))) (.cse23 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse128 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse127 (select .cse128 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse127) (bvule .cse9 .cse127) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse127)))) (not (bvule .cse14 (select .cse128 |c_create_sub_list_~sub#1.base|))))))) (.cse37 (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse126 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse125 (select .cse126 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse125) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse125) (not (bvule .cse14 (select .cse126 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse125))))) .cse4)) (.cse32 (or (and .cse17 (or (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse122 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse122 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) (select .cse122 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))))) .cse4) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse124 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse123 (select .cse124 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (forall ((v_arrayElimCell_307 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse123)) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse123)))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse124 |c_create_sub_list_~sub#1.base|))))))) .cse65)) (.cse48 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse121 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (forall ((v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse120 (select .cse121 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (forall ((v_arrayElimCell_307 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse120)) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse120)))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse121 |c_create_sub_list_~sub#1.base|))))))) (.cse49 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse119 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (forall ((v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse118 (select .cse119 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (forall ((v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse118)) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse118) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse118)))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse119 |c_create_sub_list_~sub#1.base|))))))) (.cse38 (or .cse5 (forall ((v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse117 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse116 (select .cse117 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse116) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse116) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse117 |c_create_sub_list_~sub#1.base|))))))))) (.cse50 (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse115 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse114 (select .cse115 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse114) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse114) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse115 |c_create_sub_list_~sub#1.base|))))))) .cse4)) (.cse51 (or (forall ((v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse113 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) (select .cse113 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse113 |c_create_sub_list_~sub#1.base|)))))) .cse4)) (.cse52 (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse112 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse111 (select .cse112 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse111) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse111) (not (bvule .cse14 (select .cse112 |c_create_sub_list_~sub#1.base|))))))) .cse4)) (.cse25 (or .cse5 (and (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse108 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse108 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse109 (select .cse108 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (forall ((v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse109)) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse109))))))) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse110 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) (select .cse110 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse110 |c_create_sub_list_~sub#1.base|))))))))) (.cse47 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse107 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse106 (select .cse107 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse106) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse106) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse106) (forall ((v_arrayElimCell_308 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse106))))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (not (bvule .cse14 (select .cse107 |c_create_sub_list_~sub#1.base|))))))) (.cse42 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse105 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse104 (select .cse105 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse104) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse104)))) (not (bvule .cse14 (select .cse105 |c_create_sub_list_~sub#1.base|))))))) (.cse45 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse103 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse102 (select .cse103 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse102) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse102) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse102)))) (not (bvule .cse14 (select .cse103 |c_create_sub_list_~sub#1.base|))))))) (.cse53 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse101 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (forall ((v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse100 (select .cse101 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (forall ((v_arrayElimCell_307 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse100)) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse100) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse100)))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse101 |c_create_sub_list_~sub#1.base|))))))) (.cse54 (or .cse5 (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse99 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse98 (select .cse99 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse98) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse98) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse98) (not (bvule .cse14 (select .cse99 |c_create_sub_list_~sub#1.base|))))))))) (.cse55 (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse97 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse96 (select .cse97 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse96) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse96) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse96) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse97 |c_create_sub_list_~sub#1.base|))))))) .cse5)) (.cse0 (not (bvule .cse14 (_ bv12 32)))) (.cse7 (not (= (select |c_#valid| |c_create_sub_list_~sub#1.base|) (_ bv0 1)))) (.cse2 (store |c_#length| |c_create_sub_list_~sub#1.base| (_ bv12 32))) (.cse56 (or (and .cse20 (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse93 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse92 (select .cse93 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse92) (not (bvule .cse14 (select .cse93 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse92))))) .cse4) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse95 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse94 (select .cse95 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse94) (forall ((v_arrayElimCell_307 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse94)) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse94)))) (not (bvule .cse14 (select .cse95 |c_create_sub_list_~sub#1.base|))))))) .cse65)) (.cse57 (or (forall ((v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse91 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse90 (select .cse91 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse90) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse91 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse90))))) .cse4)) (.cse66 (= |c_create_sub_list_insert_sub_~head#1.base| |c_create_sub_list_~sub#1.base|))) (and (or .cse0 (and (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_327 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse1 (select .cse2 v_arrayElimCell_327))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse1) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse1) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse1)))) (or (forall ((v_arrayElimCell_328 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32))) (let ((.cse3 (select .cse2 v_arrayElimCell_328))) (or (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse3) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse3)))) .cse4) (or .cse5 (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_329 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse6 (select .cse2 v_arrayElimCell_329))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse6) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse6)))))) .cse7) (or .cse8 (and (or (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse10 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule .cse9 (select .cse10 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse10 |c_create_sub_list_~sub#1.base|)))))) .cse4) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse16 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse15 (select .cse16 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (forall ((v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse15)) (bvule .cse9 .cse15) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse15)))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse16 |c_create_sub_list_~sub#1.base|)))))) .cse17 (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse19 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse18 (select .cse19 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse18) (bvule .cse9 .cse18) (not (bvule .cse14 (select .cse19 |c_create_sub_list_~sub#1.base|))))))) .cse4) .cse20 (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse22 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse21 (select .cse22 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse21) (bvule .cse9 .cse21) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse22 |c_create_sub_list_~sub#1.base|))))))) .cse4) .cse23 .cse24 (or .cse0 (forall ((v_arrayElimCell_326 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse2 v_arrayElimCell_326))) .cse7) .cse25 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse27 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse26 (select .cse27 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (forall ((v_arrayElimCell_307 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse26)) (bvule .cse9 .cse26)))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse27 |c_create_sub_list_~sub#1.base|)))))))) (or .cse0 .cse7 (and (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32)) (v_arrayElimCell_330 (_ BitVec 32))) (let ((.cse28 (select .cse2 v_arrayElimCell_330))) (or (bvule .cse9 .cse28) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse28) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse28)))) .cse5) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32)) (v_arrayElimCell_331 (_ BitVec 32))) (let ((.cse29 (select .cse2 v_arrayElimCell_331))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse29) (bvule .cse9 .cse29) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse29) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse29)))))) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse31 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse30 (select .cse31 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse30) (bvule .cse9 .cse30) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse30) (forall ((v_arrayElimCell_308 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse30))))) (not (bvule .cse14 (select .cse31 |c_create_sub_list_~sub#1.base|)))))) (or .cse0 (forall ((v_arrayElimCell_312 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse2 v_arrayElimCell_312))) .cse7) .cse32 (or .cse33 (and (or .cse0 (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_316 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse2 v_arrayElimCell_316))) .cse7) (or (and (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32)) (v_arrayElimCell_320 (_ BitVec 32))) (let ((.cse34 (select .cse2 v_arrayElimCell_320))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse34) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse34) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse34)))) (or (forall ((v_arrayElimCell_322 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse35 (select .cse2 v_arrayElimCell_322))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse35) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse35)))) .cse5) (or .cse4 (forall ((v_arrayElimCell_321 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32))) (let ((.cse36 (select .cse2 v_arrayElimCell_321))) (or (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse36) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse36)))))) .cse0 .cse7) .cse37 .cse32 .cse38 .cse17 (or (and (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_319 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse39 (select .cse2 v_arrayElimCell_319))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse39) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse39) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse39) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse39)))) (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_318 (_ BitVec 32))) (let ((.cse40 (select .cse2 v_arrayElimCell_318))) (or (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse40) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse40) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse40)))) .cse4) (or .cse5 (forall ((v_arrayElimCell_317 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse41 (select .cse2 v_arrayElimCell_317))) (or (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse41) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse41) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse41)))))) .cse0 .cse7) (or (and .cse42 (or .cse0 (and (forall ((v_arrayElimCell_313 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse43 (select .cse2 v_arrayElimCell_313))) (or (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse43) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse43) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse43)))) (forall ((v_arrayElimCell_314 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse44 (select .cse2 v_arrayElimCell_314))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse44) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse44))))) .cse7) .cse45 (or .cse0 .cse7 (forall ((v_arrayElimCell_315 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse46 (select .cse2 v_arrayElimCell_315))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse46) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse46)))))) .cse5) .cse47 (or (and .cse48 .cse45 .cse49 .cse38 .cse17 .cse20 (or (forall ((v_arrayElimCell_323 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse2 v_arrayElimCell_323))) .cse0 .cse7) .cse50 .cse51 .cse52 .cse25) .cse8) .cse53 .cse54 .cse55 .cse56 .cse57 (or .cse0 .cse7 (and (forall ((v_arrayElimCell_325 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse58 (select .cse2 v_arrayElimCell_325))) (or (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse58) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse58) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse58) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse58)))) (or (forall ((v_arrayElimCell_324 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse59 (select .cse2 v_arrayElimCell_324))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse59) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse59) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse59)))) .cse5))))) .cse17 (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse61 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse60 (select .cse61 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse60) (bvule .cse9 .cse60) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse60) (not (bvule .cse14 (select .cse61 |c_create_sub_list_~sub#1.base|))))))) .cse5) (or (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse63 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse62 (select .cse63 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule .cse9 .cse62) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse63 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse62))))) .cse4) (or .cse0 .cse7) (or .cse64 .cse65) (or .cse64 .cse66) (or .cse64 (bvule (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~sub~0#1.offset|) .cse9)) (or .cse5 .cse64) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse68 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse67 (select .cse68 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (forall ((v_arrayElimCell_307 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse67)) (bvule .cse9 .cse67) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse67)))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse68 |c_create_sub_list_~sub#1.base|)))))) .cse24 (or (and (forall ((v_arrayElimCell_333 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse69 (select .cse2 v_arrayElimCell_333))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse69) (bvule .cse9 .cse69) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse69) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse69)))) (or .cse5 (forall ((v_arrayElimCell_334 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse70 (select .cse2 v_arrayElimCell_334))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse70) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse70) (bvule .cse9 .cse70))))) (or (forall ((v_arrayElimCell_332 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32))) (let ((.cse71 (select .cse2 v_arrayElimCell_332))) (or (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse71) (bvule .cse9 .cse71) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse71)))) .cse4)) .cse0 .cse7) (or .cse33 .cse64) (or .cse5 (and .cse42 .cse23 (or .cse0 .cse7 (and (forall ((v_arrayElimCell_310 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse72 (select .cse2 v_arrayElimCell_310))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse72) (bvule .cse9 .cse72) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse72)))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32)) (v_arrayElimCell_309 (_ BitVec 32))) (let ((.cse73 (select .cse2 v_arrayElimCell_309))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse73) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse73)))))) (or (forall ((v_arrayElimCell_311 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse74 (select .cse2 v_arrayElimCell_311))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse74) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse74)))) .cse0 .cse7))) (or .cse4 (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse76 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse75 (select .cse76 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse75) (bvule .cse9 .cse75) (not (bvule .cse14 (select .cse76 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse75)))))) .cse56 (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ BitVec 32))) (let ((.cse78 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_74| (_ bv12 32)))) (let ((.cse77 (select .cse78 (select (select (store (store (store .cse11 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse12 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_74| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse13)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_74|))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse77) (bvule .cse9 .cse77) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse77) (= |v_create_sub_list_insert_sub_~sub~0#1.base_74| |c_create_sub_list_~sub#1.base|) (not (bvule .cse14 (select .cse78 |c_create_sub_list_~sub#1.base|))))))) .cse5) (or (and .cse37 .cse32 .cse38 .cse17 (or .cse8 (and .cse48 .cse45 .cse49 .cse38 .cse17 .cse20 .cse50 .cse51 (or (forall ((v_arrayElimCell_345 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse2 v_arrayElimCell_345))) .cse0 .cse7) .cse52 .cse25)) .cse47 (or (and .cse42 .cse45 (or (forall ((v_arrayElimCell_337 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse79 (select .cse2 v_arrayElimCell_337))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse79) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse79)))) .cse0 .cse7) (or .cse0 .cse7 (and (forall ((v_arrayElimCell_336 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse80 (select .cse2 v_arrayElimCell_336))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse80) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse80)))) (forall ((v_arrayElimCell_335 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse81 (select .cse2 v_arrayElimCell_335))) (or (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse81) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse81) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse81))))))) .cse5) .cse53 (or .cse0 (and (forall ((v_arrayElimCell_347 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse82 (select .cse2 v_arrayElimCell_347))) (or (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse82) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse82) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse82) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse82)))) (or .cse5 (forall ((v_arrayElimCell_346 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse83 (select .cse2 v_arrayElimCell_346))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse83) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse83) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse83)))))) .cse7) .cse54 (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_338 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse2 v_arrayElimCell_338))) .cse0 .cse7) (or .cse0 .cse7 (and (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32)) (v_arrayElimCell_342 (_ BitVec 32))) (let ((.cse84 (select .cse2 v_arrayElimCell_342))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse84) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse84) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse84)))) (or (forall ((v_arrayElimCell_343 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32))) (let ((.cse85 (select .cse2 v_arrayElimCell_343))) (or (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse85) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse85)))) .cse4) (or .cse5 (forall ((v_arrayElimCell_344 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse86 (select .cse2 v_arrayElimCell_344))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse86) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse86))))))) .cse55 (or .cse0 .cse7 (and (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32)) (v_arrayElimCell_341 (_ BitVec 32))) (let ((.cse87 (select .cse2 v_arrayElimCell_341))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse87) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse87) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse87) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse87)))) (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_340 (_ BitVec 32))) (let ((.cse88 (select .cse2 v_arrayElimCell_340))) (or (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse88) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse88) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse88)))) .cse4) (or .cse5 (forall ((v_arrayElimCell_339 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse89 (select .cse2 v_arrayElimCell_339))) (or (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse89) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse89) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse89))))))) .cse56 .cse57) .cse66)))))))) is different from true [2022-11-25 18:20:25,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [649962413] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:20:25,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:20:25,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 46 [2022-11-25 18:20:25,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86938211] [2022-11-25 18:20:25,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:20:25,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-25 18:20:25,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:25,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-25 18:20:25,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3218, Unknown=20, NotChecked=114, Total=3540 [2022-11-25 18:20:25,032 INFO L87 Difference]: Start difference. First operand 178 states and 201 transitions. Second operand has 47 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 41 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:21:08,920 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 141 DAG size of output: 113 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:21:13,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:21:13,950 INFO L93 Difference]: Finished difference Result 179 states and 201 transitions. [2022-11-25 18:21:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-25 18:21:13,951 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 41 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2022-11-25 18:21:13,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:21:13,952 INFO L225 Difference]: With dead ends: 179 [2022-11-25 18:21:13,952 INFO L226 Difference]: Without dead ends: 179 [2022-11-25 18:21:13,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 91 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 105.9s TimeCoverageRelationStatistics Valid=647, Invalid=7682, Unknown=47, NotChecked=180, Total=8556 [2022-11-25 18:21:13,955 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 119 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 39 mSolverCounterUnsat, 32 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 2201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 32 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:21:13,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1597 Invalid, 2201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2130 Invalid, 32 Unknown, 0 Unchecked, 16.0s Time] [2022-11-25 18:21:13,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-25 18:21:13,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2022-11-25 18:21:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 131 states have (on average 1.2900763358778626) internal successors, (169), 155 states have internal predecessors, (169), 12 states have call successors, (12), 10 states have call predecessors, (12), 12 states have return successors, (19), 12 states have call predecessors, (19), 12 states have call successors, (19) [2022-11-25 18:21:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 200 transitions. [2022-11-25 18:21:13,962 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 200 transitions. Word has length 51 [2022-11-25 18:21:13,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:21:13,962 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 200 transitions. [2022-11-25 18:21:13,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 41 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:21:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 200 transitions. [2022-11-25 18:21:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 18:21:13,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:21:13,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:21:13,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-25 18:21:14,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2022-11-25 18:21:14,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 18:21:14,379 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting list_add_tailErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:21:14,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:21:14,379 INFO L85 PathProgramCache]: Analyzing trace with hash 937684793, now seen corresponding path program 1 times [2022-11-25 18:21:14,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:21:14,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602069088] [2022-11-25 18:21:14,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:14,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:21:14,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:21:14,381 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:21:14,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-25 18:21:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:14,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 18:21:14,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:21:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:21:15,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:21:15,690 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 18:21:15,690 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 15 [2022-11-25 18:21:15,777 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 18:21:15,777 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 15 [2022-11-25 18:21:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:21:15,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:21:15,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602069088] [2022-11-25 18:21:15,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602069088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:21:15,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:21:15,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2022-11-25 18:21:15,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502214536] [2022-11-25 18:21:15,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:21:15,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 18:21:15,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:21:15,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 18:21:15,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:21:15,828 INFO L87 Difference]: Start difference. First operand 178 states and 200 transitions. Second operand has 11 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 18:21:17,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:21:17,877 INFO L93 Difference]: Finished difference Result 208 states and 229 transitions. [2022-11-25 18:21:17,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:21:17,877 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2022-11-25 18:21:17,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:21:17,880 INFO L225 Difference]: With dead ends: 208 [2022-11-25 18:21:17,880 INFO L226 Difference]: Without dead ends: 208 [2022-11-25 18:21:17,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-25 18:21:17,881 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 117 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:21:17,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 330 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 18:21:17,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-25 18:21:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 177. [2022-11-25 18:21:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 131 states have (on average 1.2748091603053435) internal successors, (167), 154 states have internal predecessors, (167), 12 states have call successors, (12), 10 states have call predecessors, (12), 12 states have return successors, (19), 12 states have call predecessors, (19), 12 states have call successors, (19) [2022-11-25 18:21:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2022-11-25 18:21:17,890 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 54 [2022-11-25 18:21:17,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:21:17,891 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2022-11-25 18:21:17,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 18:21:17,891 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2022-11-25 18:21:17,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 18:21:17,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:21:17,892 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:21:17,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-25 18:21:18,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:21:18,107 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting list_add_tailErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:21:18,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:21:18,108 INFO L85 PathProgramCache]: Analyzing trace with hash 937684794, now seen corresponding path program 1 times [2022-11-25 18:21:18,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:21:18,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013878273] [2022-11-25 18:21:18,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:18,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:21:18,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:21:18,112 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:21:18,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-25 18:21:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:18,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 18:21:18,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:21:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:21:19,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:21:20,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2022-11-25 18:21:21,417 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:21:21,417 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 20 [2022-11-25 18:21:22,656 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:21:22,656 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 20 [2022-11-25 18:21:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:21:23,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:21:23,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013878273] [2022-11-25 18:21:23,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013878273] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:21:23,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:21:23,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-25 18:21:23,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700891999] [2022-11-25 18:21:23,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:21:23,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 18:21:23,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:21:23,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 18:21:23,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-11-25 18:21:23,964 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand has 22 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 7 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-25 18:21:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:21:30,008 INFO L93 Difference]: Finished difference Result 178 states and 195 transitions. [2022-11-25 18:21:30,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 18:21:30,010 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 7 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 54 [2022-11-25 18:21:30,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:21:30,011 INFO L225 Difference]: With dead ends: 178 [2022-11-25 18:21:30,011 INFO L226 Difference]: Without dead ends: 178 [2022-11-25 18:21:30,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 18:21:30,012 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 186 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:21:30,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 592 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 18:21:30,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-25 18:21:30,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 175. [2022-11-25 18:21:30,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 131 states have (on average 1.2442748091603053) internal successors, (163), 152 states have internal predecessors, (163), 12 states have call successors, (12), 10 states have call predecessors, (12), 12 states have return successors, (19), 12 states have call predecessors, (19), 12 states have call successors, (19) [2022-11-25 18:21:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 194 transitions. [2022-11-25 18:21:30,019 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 194 transitions. Word has length 54 [2022-11-25 18:21:30,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:21:30,019 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 194 transitions. [2022-11-25 18:21:30,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 7 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-25 18:21:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 194 transitions. [2022-11-25 18:21:30,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 18:21:30,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:21:30,021 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:21:30,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-25 18:21:30,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:21:30,236 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:21:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:21:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash -828042884, now seen corresponding path program 1 times [2022-11-25 18:21:30,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:21:30,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157523148] [2022-11-25 18:21:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:30,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:21:30,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:21:30,238 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:21:30,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-25 18:21:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:30,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-25 18:21:30,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:21:30,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:30,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 18 [2022-11-25 18:21:31,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:31,192 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-25 18:21:31,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 41 [2022-11-25 18:21:31,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-25 18:21:31,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:31,457 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:21:31,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2022-11-25 18:21:32,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:21:34,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 53 [2022-11-25 18:21:34,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:34,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:34,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:34,669 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-25 18:21:34,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 37 [2022-11-25 18:21:34,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:34,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:34,782 INFO L321 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2022-11-25 18:21:34,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 35 [2022-11-25 18:21:34,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:21:35,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-25 18:21:35,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-25 18:21:36,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:21:39,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 53 [2022-11-25 18:21:39,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:39,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:39,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:39,265 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-25 18:21:39,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 37 [2022-11-25 18:21:39,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-25 18:21:39,352 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:21:39,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-25 18:21:40,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 18:21:40,878 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:21:40,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:21:41,352 INFO L321 Elim1Store]: treesize reduction 7, result has 56.3 percent of original size [2022-11-25 18:21:41,353 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 21 [2022-11-25 18:21:43,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:21:43,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157523148] [2022-11-25 18:21:43,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157523148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:21:43,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1363733283] [2022-11-25 18:21:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:43,890 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:21:43,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:21:43,891 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:21:43,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-25 18:21:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:46,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-25 18:21:46,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:21:46,485 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 18:21:46,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:21:46,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:46,978 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-25 18:21:46,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2022-11-25 18:21:47,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:21:47,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:47,550 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-25 18:21:47,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 16 [2022-11-25 18:21:50,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-25 18:21:52,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:52,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 63 [2022-11-25 18:21:52,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:52,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:52,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:52,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:52,365 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-25 18:21:52,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 40 [2022-11-25 18:21:52,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:21:52,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:52,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:52,558 INFO L321 Elim1Store]: treesize reduction 71, result has 18.4 percent of original size [2022-11-25 18:21:52,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 48 [2022-11-25 18:21:53,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:53,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:53,278 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-25 18:21:53,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 16 [2022-11-25 18:21:53,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:21:57,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-25 18:22:04,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:22:04,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 57 [2022-11-25 18:22:04,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:22:04,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:22:04,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:22:04,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:22:04,664 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-25 18:22:04,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 36 [2022-11-25 18:22:04,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:22:04,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:22:04,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:22:04,898 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-25 18:22:04,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 55 [2022-11-25 18:22:05,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:22:07,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-25 18:22:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:09,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:22:12,518 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3339 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3341 (_ BitVec 32)) (v_ArrVal_3338 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_103| (_ BitVec 32)) (v_ArrVal_3337 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3340 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (bvult |v_create_sub_list_insert_sub_~sub~0#1.base_103| |c_#StackHeapBarrier|)) (= (_ bv0 1) (bvadd (select (store |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_103| (_ bv1 1)) (select (select (let ((.cse1 (bvadd |c_ULTIMATE.start_insert_top_~top~0#1.offset| (_ bv20 32)))) (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_insert_top_~top~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_insert_top_~top~0#1.base|) .cse1 |c_ULTIMATE.start_insert_top_~top~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_insert_top_~top~0#1.offset|) v_ArrVal_3341)) |v_create_sub_list_insert_sub_~sub~0#1.base_103| v_ArrVal_3339))) (store (store (store .cse0 |c_ULTIMATE.start_insert_top_~top~0#1.base| v_ArrVal_3338) |v_create_sub_list_insert_sub_~sub~0#1.base_103| v_ArrVal_3337) (select (select .cse0 |c_ULTIMATE.start_insert_top_~top~0#1.base|) .cse1) v_ArrVal_3340))) |c_ULTIMATE.start_insert_top_~head#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_insert_top_~head#1.offset|))) (_ bv1 1))) (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_103|) (_ bv0 1))))) is different from false [2022-11-25 18:22:12,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1363733283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:22:12,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:22:12,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 39] total 65 [2022-11-25 18:22:12,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049568006] [2022-11-25 18:22:12,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:22:12,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-25 18:22:12,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:22:12,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-25 18:22:12,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=5299, Unknown=130, NotChecked=148, Total=5852 [2022-11-25 18:22:12,530 INFO L87 Difference]: Start difference. First operand 175 states and 194 transitions. Second operand has 67 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 55 states have internal predecessors, (82), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 18:23:07,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:21,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:21,535 INFO L93 Difference]: Finished difference Result 267 states and 293 transitions. [2022-11-25 18:23:21,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-25 18:23:21,536 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 55 states have internal predecessors, (82), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 56 [2022-11-25 18:23:21,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:21,538 INFO L225 Difference]: With dead ends: 267 [2022-11-25 18:23:21,538 INFO L226 Difference]: Without dead ends: 267 [2022-11-25 18:23:21,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 103 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3011 ImplicationChecksByTransitivity, 61.6s TimeCoverageRelationStatistics Valid=672, Invalid=9753, Unknown=291, NotChecked=204, Total=10920 [2022-11-25 18:23:21,541 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 230 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 71 mSolverCounterUnsat, 145 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 145 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:21,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 1439 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2329 Invalid, 145 Unknown, 0 Unchecked, 34.5s Time] [2022-11-25 18:23:21,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-25 18:23:21,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 232. [2022-11-25 18:23:21,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 178 states have (on average 1.196629213483146) internal successors, (213), 200 states have internal predecessors, (213), 17 states have call successors, (17), 15 states have call predecessors, (17), 17 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) [2022-11-25 18:23:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 257 transitions. [2022-11-25 18:23:21,549 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 257 transitions. Word has length 56 [2022-11-25 18:23:21,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:21,550 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 257 transitions. [2022-11-25 18:23:21,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 55 states have internal predecessors, (82), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 18:23:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 257 transitions. [2022-11-25 18:23:21,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 18:23:21,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:21,551 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:23:21,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2022-11-25 18:23:21,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-25 18:23:21,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:21,963 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:23:21,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:21,964 INFO L85 PathProgramCache]: Analyzing trace with hash -828042883, now seen corresponding path program 1 times [2022-11-25 18:23:21,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:23:21,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485677673] [2022-11-25 18:23:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:21,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:21,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:23:21,965 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:23:21,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-25 18:23:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:22,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 138 conjunts are in the unsatisfiable core [2022-11-25 18:23:22,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:22,788 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:23:22,815 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:23:23,025 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:23:23,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-25 18:23:23,140 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:23:23,140 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:23:23,418 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 18:23:23,431 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-11-25 18:23:23,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:23:23,468 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-11-25 18:23:24,669 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:23:24,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:23:27,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:27,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:27,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:27,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:23:27,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 43 [2022-11-25 18:23:27,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-11-25 18:23:27,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:27,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:27,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:27,781 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-25 18:23:27,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 35 [2022-11-25 18:23:27,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:27,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:23:27,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:27,892 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:23:27,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-11-25 18:23:27,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:23:28,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:23:28,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-25 18:23:28,301 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-11-25 18:23:28,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:23:30,066 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:23:30,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:23:33,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:33,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:33,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:33,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:23:33,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 43 [2022-11-25 18:23:33,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-11-25 18:23:33,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:33,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:33,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:33,810 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-25 18:23:33,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 35 [2022-11-25 18:23:33,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:33,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:23:33,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-25 18:23:33,916 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:23:33,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-25 18:23:35,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:23:35,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:23:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:23:35,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:23:41,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:23:41,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485677673] [2022-11-25 18:23:41,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485677673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:23:41,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2051067988] [2022-11-25 18:23:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:41,608 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:23:41,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:23:41,610 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:23:41,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-11-25 18:23:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:45,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 151 conjunts are in the unsatisfiable core [2022-11-25 18:23:45,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:45,175 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:23:45,628 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:23:45,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:45,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:23:46,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:23:46,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:23:46,353 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-11-25 18:23:46,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-25 18:23:49,751 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:23:49,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:23:52,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:52,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:52,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:52,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:52,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:23:52,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 45 [2022-11-25 18:23:52,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:52,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 63 [2022-11-25 18:23:52,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:52,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:52,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:52,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:52,770 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-25 18:23:52,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 40 [2022-11-25 18:23:52,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:52,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:23:52,847 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:23:52,848 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:23:52,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:23:53,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:23:53,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:23:53,590 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-11-25 18:23:53,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-25 18:23:58,419 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:23:58,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:24:06,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:06,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:06,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:06,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:06,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:06,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 39 [2022-11-25 18:24:06,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:06,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 57 [2022-11-25 18:24:06,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:06,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:06,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:06,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:06,446 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-25 18:24:06,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 36 [2022-11-25 18:24:06,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:24:06,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:06,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:24:06,558 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:24:06,559 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:24:09,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:24:09,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-25 18:24:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:11,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:15,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2051067988] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:15,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:24:15,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 39] total 64 [2022-11-25 18:24:15,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258891096] [2022-11-25 18:24:15,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:15,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-25 18:24:15,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:15,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-25 18:24:15,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=4680, Unknown=176, NotChecked=0, Total=5112 [2022-11-25 18:24:15,779 INFO L87 Difference]: Start difference. First operand 232 states and 257 transitions. Second operand has 65 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 54 states have internal predecessors, (81), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 18:24:37,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:25:05,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:25:05,802 INFO L93 Difference]: Finished difference Result 234 states and 258 transitions. [2022-11-25 18:25:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-25 18:25:05,803 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 54 states have internal predecessors, (81), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 56 [2022-11-25 18:25:05,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:25:05,805 INFO L225 Difference]: With dead ends: 234 [2022-11-25 18:25:05,805 INFO L226 Difference]: Without dead ends: 234 [2022-11-25 18:25:05,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2383 ImplicationChecksByTransitivity, 56.7s TimeCoverageRelationStatistics Valid=503, Invalid=7568, Unknown=301, NotChecked=0, Total=8372 [2022-11-25 18:25:05,806 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 39 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 21 mSolverCounterUnsat, 113 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 113 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:25:05,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1420 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1548 Invalid, 113 Unknown, 0 Unchecked, 27.6s Time] [2022-11-25 18:25:05,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-25 18:25:05,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 232. [2022-11-25 18:25:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 178 states have (on average 1.1910112359550562) internal successors, (212), 200 states have internal predecessors, (212), 17 states have call successors, (17), 15 states have call predecessors, (17), 17 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) [2022-11-25 18:25:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 256 transitions. [2022-11-25 18:25:05,815 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 256 transitions. Word has length 56 [2022-11-25 18:25:05,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:25:05,816 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 256 transitions. [2022-11-25 18:25:05,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 54 states have internal predecessors, (81), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 18:25:05,816 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 256 transitions. [2022-11-25 18:25:05,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 18:25:05,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:25:05,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:05,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2022-11-25 18:25:06,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-25 18:25:06,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:25:06,230 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:25:06,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash -234698876, now seen corresponding path program 1 times [2022-11-25 18:25:06,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:25:06,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39755961] [2022-11-25 18:25:06,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:06,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:25:06,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:25:06,232 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:25:06,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-25 18:25:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:07,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-25 18:25:07,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:25:07,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:25:07,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:25:08,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:25:08,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:25:08,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:25:08,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:25:08,207 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:25:08,207 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:25:08,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:25:08,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:25:08,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:25:08,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:25:11,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-25 18:25:11,237 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-25 18:25:11,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 128 [2022-11-25 18:25:11,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 96 [2022-11-25 18:25:11,273 INFO L350 Elim1Store]: Elim1 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 42 treesize of output 24 [2022-11-25 18:25:11,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 22 [2022-11-25 18:25:11,855 INFO L321 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2022-11-25 18:25:11,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 55 [2022-11-25 18:25:12,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2022-11-25 18:25:13,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2022-11-25 18:25:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:25:13,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:25:20,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:25:20,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39755961] [2022-11-25 18:25:20,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39755961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:25:20,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1253446648] [2022-11-25 18:25:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:20,230 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:25:20,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:25:20,234 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:25:20,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-11-25 18:25:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:23,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-25 18:25:23,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:25:23,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:25:23,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:25:23,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:25:23,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:25:23,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:25:23,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:25:23,908 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:25:23,908 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:25:24,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:25:24,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:25:24,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:25:24,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:25:25,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-25 18:25:25,869 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-25 18:25:25,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 128 [2022-11-25 18:25:25,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 26 [2022-11-25 18:25:25,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:25:25,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 84 [2022-11-25 18:25:25,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 22 [2022-11-25 18:25:26,141 INFO L321 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2022-11-25 18:25:26,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 55 [2022-11-25 18:25:26,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2022-11-25 18:25:27,375 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 15 [2022-11-25 18:25:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:25:27,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:25:35,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1253446648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:25:35,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:25:35,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 34 [2022-11-25 18:25:35,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990135275] [2022-11-25 18:25:35,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:25:35,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-25 18:25:35,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:25:35,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-25 18:25:35,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1788, Unknown=49, NotChecked=0, Total=1980 [2022-11-25 18:25:35,504 INFO L87 Difference]: Start difference. First operand 232 states and 256 transitions. Second operand has 35 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:25:54,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:25:54,913 INFO L93 Difference]: Finished difference Result 262 states and 286 transitions. [2022-11-25 18:25:54,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-25 18:25:54,914 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2022-11-25 18:25:54,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:25:54,916 INFO L225 Difference]: With dead ends: 262 [2022-11-25 18:25:54,916 INFO L226 Difference]: Without dead ends: 262 [2022-11-25 18:25:54,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=447, Invalid=4290, Unknown=93, NotChecked=0, Total=4830 [2022-11-25 18:25:54,917 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 193 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 31 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:25:54,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 877 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1367 Invalid, 17 Unknown, 0 Unchecked, 9.6s Time] [2022-11-25 18:25:54,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-25 18:25:54,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 232. [2022-11-25 18:25:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 178 states have (on average 1.1853932584269662) internal successors, (211), 200 states have internal predecessors, (211), 17 states have call successors, (17), 15 states have call predecessors, (17), 17 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) [2022-11-25 18:25:54,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 255 transitions. [2022-11-25 18:25:54,928 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 255 transitions. Word has length 57 [2022-11-25 18:25:54,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:25:54,929 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 255 transitions. [2022-11-25 18:25:54,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:25:54,929 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 255 transitions. [2022-11-25 18:25:54,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 18:25:54,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:25:54,930 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:54,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2022-11-25 18:25:55,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-25 18:25:55,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:25:55,345 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:25:55,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:55,346 INFO L85 PathProgramCache]: Analyzing trace with hash -234698875, now seen corresponding path program 1 times [2022-11-25 18:25:55,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:25:55,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008502516] [2022-11-25 18:25:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:55,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:25:55,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:25:55,348 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:25:55,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-25 18:25:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:56,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-25 18:25:56,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:25:56,315 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:25:56,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:25:56,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:25:56,823 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:25:56,823 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 22 [2022-11-25 18:25:56,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:25:57,443 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 3 [2022-11-25 18:25:57,661 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:25:57,661 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:25:57,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:25:57,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:25:58,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:25:58,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:25:58,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:25:58,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:25:58,258 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:25:58,258 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:25:58,336 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:25:58,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:25:58,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:25:58,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:25:58,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:26:04,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 79 [2022-11-25 18:26:04,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 71 [2022-11-25 18:26:04,262 INFO L321 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2022-11-25 18:26:04,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 150 [2022-11-25 18:26:04,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:26:04,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 106 [2022-11-25 18:26:04,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:26:04,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2022-11-25 18:26:04,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:26:04,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-11-25 18:26:05,096 INFO L321 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2022-11-25 18:26:05,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2022-11-25 18:26:05,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-25 18:26:05,647 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-25 18:26:05,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 76 [2022-11-25 18:26:05,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:26:06,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:26:06,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 18:26:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:26:07,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:26:09,567 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_4315 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4315) |c_create_sub_list_insert_sub_~head#1.base|) .cse1))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_4315 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4316 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4315) |c_create_sub_list_insert_sub_~head#1.base|) .cse1) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4316) |c_create_sub_list_insert_sub_~head#1.base|) .cse1)))))) is different from false [2022-11-25 18:26:25,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:26:25,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008502516] [2022-11-25 18:26:25,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008502516] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:26:25,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [962600230] [2022-11-25 18:26:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:26:25,227 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:26:25,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:26:25,228 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:26:25,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2022-11-25 18:26:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:30,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-25 18:26:30,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:26:33,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:26:33,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:26:33,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:26:33,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:26:33,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:26:33,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:26:33,652 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:26:33,793 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 18:26:33,794 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-25 18:26:34,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:26:34,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:26:34,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:26:34,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:26:42,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 86 [2022-11-25 18:26:42,496 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-25 18:26:42,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 162 treesize of output 188 [2022-11-25 18:26:42,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 60 [2022-11-25 18:26:42,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:26:42,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 106 [2022-11-25 18:26:42,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:26:42,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2022-11-25 18:26:42,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 22 [2022-11-25 18:26:42,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:26:42,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-11-25 18:26:43,508 INFO L321 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2022-11-25 18:26:43,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2022-11-25 18:26:43,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-25 18:26:44,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2022-11-25 18:26:44,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:26:44,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 18:26:44,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 18:26:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:26:44,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:26:44,875 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_4507 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4507) |c_create_sub_list_insert_sub_~head#1.base|) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_4508 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4507 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4507) |c_create_sub_list_insert_sub_~head#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4508) |c_create_sub_list_insert_sub_~head#1.base|) .cse1)))))) is different from false [2022-11-25 18:27:04,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [962600230] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:04,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:27:04,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 28] total 45 [2022-11-25 18:27:04,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299586515] [2022-11-25 18:27:04,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:27:04,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-25 18:27:04,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:27:04,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-25 18:27:04,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2760, Unknown=33, NotChecked=214, Total=3192 [2022-11-25 18:27:04,897 INFO L87 Difference]: Start difference. First operand 232 states and 255 transitions. Second operand has 46 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 41 states have internal predecessors, (76), 6 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 18:28:11,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:28:11,087 INFO L93 Difference]: Finished difference Result 274 states and 299 transitions. [2022-11-25 18:28:11,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-25 18:28:11,088 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 41 states have internal predecessors, (76), 6 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 57 [2022-11-25 18:28:11,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:28:11,089 INFO L225 Difference]: With dead ends: 274 [2022-11-25 18:28:11,089 INFO L226 Difference]: Without dead ends: 274 [2022-11-25 18:28:11,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2131 ImplicationChecksByTransitivity, 88.3s TimeCoverageRelationStatistics Valid=642, Invalid=7677, Unknown=61, NotChecked=362, Total=8742 [2022-11-25 18:28:11,090 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 217 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 47 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:28:11,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 796 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1921 Invalid, 18 Unknown, 0 Unchecked, 17.2s Time] [2022-11-25 18:28:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-25 18:28:11,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 246. [2022-11-25 18:28:11,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 190 states have (on average 1.1736842105263159) internal successors, (223), 213 states have internal predecessors, (223), 18 states have call successors, (18), 16 states have call predecessors, (18), 18 states have return successors, (28), 16 states have call predecessors, (28), 18 states have call successors, (28) [2022-11-25 18:28:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 269 transitions. [2022-11-25 18:28:11,100 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 269 transitions. Word has length 57 [2022-11-25 18:28:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:28:11,101 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 269 transitions. [2022-11-25 18:28:11,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 41 states have internal predecessors, (76), 6 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 18:28:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 269 transitions. [2022-11-25 18:28:11,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 18:28:11,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:28:11,103 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:11,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-25 18:28:11,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2022-11-25 18:28:11,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 18:28:11,525 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 18:28:11,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:11,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1219546920, now seen corresponding path program 2 times [2022-11-25 18:28:11,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:28:11,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207481831] [2022-11-25 18:28:11,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:28:11,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:28:11,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:28:11,528 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:28:11,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-25 18:28:12,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:28:12,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:28:12,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-25 18:28:12,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:28:12,313 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:28:12,329 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:28:12,752 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:28:13,233 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:28:13,233 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:28:15,535 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:28:15,536 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 18:28:15,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:28:17,925 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:28:17,926 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:28:17,985 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4673 (_ BitVec 32)) (v_ArrVal_4674 (_ BitVec 32)) (v_ArrVal_4672 (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_129| (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_130| (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |v_create_sub_list_insert_sub_~sub~0#1.base_129|)) (not (= |c_create_sub_list_#in~sub#1.base| |create_sub_list_insert_sub_~sub~0#1.base|)) (not (= |v_create_sub_list_insert_sub_~sub~0#1.base_130| |c_create_sub_list_#in~sub#1.base|)) (= (store (store (store |c_old(#length)| |v_create_sub_list_insert_sub_~sub~0#1.base_129| v_ArrVal_4672) |v_create_sub_list_insert_sub_~sub~0#1.base_130| v_ArrVal_4673) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4674) |c_#length|))) is different from true [2022-11-25 18:28:18,263 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 18:28:18,263 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-25 18:28:18,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:28:18,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:28:18,735 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 18:28:18,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 35 [2022-11-25 18:28:18,808 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:28:18,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-25 18:28:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 10 not checked. [2022-11-25 18:28:19,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:28:20,786 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 18:28:20,787 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 14 [2022-11-25 18:28:20,852 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 18:28:20,853 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 14 [2022-11-25 18:28:26,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:28:26,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207481831] [2022-11-25 18:28:26,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207481831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:28:26,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2072348068] [2022-11-25 18:28:26,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:28:26,045 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:28:26,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:28:26,047 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:28:26,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f95e8a7-1b56-4fa6-bcdb-8410eee6ad3c/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2022-11-25 18:28:27,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:28:27,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:28:27,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-25 18:28:27,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:28:27,576 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-25 18:28:27,591 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:28:30,248 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:28:32,716 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:28:32,716 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:28:35,243 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:28:35,244 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 18:28:35,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:28:37,826 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:28:37,826 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-25 18:28:38,620 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 18:28:38,621 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-25 18:28:38,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 18:28:39,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:28:40,196 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 18:28:40,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 35 [2022-11-25 18:28:40,258 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:28:40,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-25 18:28:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 18:28:40,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:28:42,850 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 18:28:42,850 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 14 [2022-11-25 18:28:42,920 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 18:28:42,920 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 14 [2022-11-25 18:28:45,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2072348068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:28:45,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:28:45,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 25 [2022-11-25 18:28:45,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391227501] [2022-11-25 18:28:45,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:28:45,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-25 18:28:45,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:28:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-25 18:28:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=785, Unknown=12, NotChecked=56, Total=930 [2022-11-25 18:28:45,608 INFO L87 Difference]: Start difference. First operand 246 states and 269 transitions. Second operand has 26 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 18:28:48,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]