./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 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_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- 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-4e7fbc6 [2022-11-23 16:08:51,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:08:51,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:08:51,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:08:51,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:08:51,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:08:51,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:08:51,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:08:51,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:08:51,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:08:51,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:08:51,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:08:51,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:08:51,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:08:51,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:08:51,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:08:51,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:08:51,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:08:51,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:08:51,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:08:51,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:08:51,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:08:51,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:08:51,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:08:51,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:08:51,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:08:51,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:08:51,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:08:51,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:08:51,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:08:51,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:08:51,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:08:51,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:08:51,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:08:51,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:08:51,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:08:51,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:08:51,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:08:51,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:08:51,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:08:51,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:08:51,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 16:08:51,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:08:51,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:08:51,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:08:51,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:08:51,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:08:51,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:08:51,901 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:08:51,901 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:08:51,901 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:08:51,901 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:08:51,901 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:08:51,902 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:08:51,902 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:08:51,902 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:08:51,905 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:08:51,906 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:08:51,906 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:08:51,906 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:08:51,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 16:08:51,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 16:08:51,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:08:51,908 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 16:08:51,908 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 16:08:51,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:08:51,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 16:08:51,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:08:51,909 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 16:08:51,909 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 16:08:51,910 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 16:08:51,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:08:51,911 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 16:08:51,911 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 16:08:51,911 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:08:51,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:08:51,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:08:51,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:08:51,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:08:51,913 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:08:51,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:08:51,914 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:08:51,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:08:51,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:08:51,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2022-11-23 16:08:52,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:08:52,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:08:52,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:08:52,183 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:08:52,183 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:08:52,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2022-11-23 16:08:55,286 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:08:55,571 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:08:55,572 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2022-11-23 16:08:55,591 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/data/6b7e00e76/a0bc07983c3a4c4d94cc6f993981473f/FLAG44e8d0fbb [2022-11-23 16:08:55,607 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/data/6b7e00e76/a0bc07983c3a4c4d94cc6f993981473f [2022-11-23 16:08:55,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:08:55,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:08:55,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:08:55,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:08:55,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:08:55,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:08:55" (1/1) ... [2022-11-23 16:08:55,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6a05ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:55, skipping insertion in model container [2022-11-23 16:08:55,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:08:55" (1/1) ... [2022-11-23 16:08:55,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:08:55,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:08:56,214 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2022-11-23 16:08:56,241 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-11-23 16:08:56,242 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-11-23 16:08:56,243 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-11-23 16:08:56,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:08:56,306 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) [2022-11-23 16:08:56,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5d9604da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:56, skipping insertion in model container [2022-11-23 16:08:56,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:08:56,308 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-23 16:08:56,311 INFO L158 Benchmark]: Toolchain (without parser) took 698.21ms. Allocated memory is still 161.5MB. Free memory was 116.6MB in the beginning and 101.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 16:08:56,311 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 130.0MB. Free memory was 71.1MB in the beginning and 71.0MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:08:56,313 INFO L158 Benchmark]: CACSL2BoogieTranslator took 695.57ms. Allocated memory is still 161.5MB. Free memory was 116.6MB in the beginning and 101.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 16:08:56,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 130.0MB. Free memory was 71.1MB in the beginning and 71.0MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 695.57ms. Allocated memory is still 161.5MB. Free memory was 116.6MB in the beginning and 101.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 860]: 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_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- 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-4e7fbc6 [2022-11-23 16:08:58,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:08:58,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:08:58,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:08:58,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:08:58,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:08:58,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:08:58,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:08:58,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:08:58,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:08:58,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:08:58,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:08:58,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:08:58,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:08:58,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:08:58,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:08:58,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:08:58,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:08:58,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:08:58,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:08:58,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:08:58,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:08:58,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:08:58,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:08:58,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:08:58,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:08:58,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:08:58,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:08:58,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:08:58,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:08:58,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:08:58,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:08:58,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:08:58,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:08:58,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:08:58,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:08:58,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:08:58,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:08:58,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:08:58,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:08:58,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:08:58,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-23 16:08:58,788 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:08:58,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:08:58,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:08:58,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:08:58,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:08:58,790 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:08:58,790 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:08:58,791 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:08:58,791 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:08:58,791 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:08:58,792 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:08:58,792 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:08:58,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 16:08:58,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 16:08:58,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:08:58,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 16:08:58,794 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 16:08:58,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:08:58,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 16:08:58,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:08:58,795 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 16:08:58,795 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 16:08:58,795 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 16:08:58,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:08:58,796 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 16:08:58,796 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 16:08:58,796 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 16:08:58,796 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 16:08:58,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:08:58,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:08:58,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 16:08:58,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:08:58,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:08:58,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:08:58,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:08:58,798 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 16:08:58,798 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 16:08:58,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:08:58,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 16:08:58,799 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2022-11-23 16:08:59,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:08:59,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:08:59,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:08:59,199 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:08:59,200 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:08:59,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2022-11-23 16:09:02,291 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:09:02,635 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:09:02,635 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2022-11-23 16:09:02,661 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/data/5ed4bf98c/4fd77e6c34b7441095ccdb6f736d5d22/FLAG9311b7eaf [2022-11-23 16:09:02,682 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/data/5ed4bf98c/4fd77e6c34b7441095ccdb6f736d5d22 [2022-11-23 16:09:02,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:09:02,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:09:02,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:09:02,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:09:02,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:09:02,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:09:02" (1/1) ... [2022-11-23 16:09:02,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1746dad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:02, skipping insertion in model container [2022-11-23 16:09:02,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:09:02" (1/1) ... [2022-11-23 16:09:02,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:09:02,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:09:03,250 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2022-11-23 16:09:03,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:09:03,398 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 16:09:03,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:09:03,467 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2022-11-23 16:09:03,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:09:03,513 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:09:03,575 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2022-11-23 16:09:03,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:09:03,645 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:09:03,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:03 WrapperNode [2022-11-23 16:09:03,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:09:03,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:09:03,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:09:03,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:09:03,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:03" (1/1) ... [2022-11-23 16:09:03,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:03" (1/1) ... [2022-11-23 16:09:03,734 INFO L138 Inliner]: procedures = 235, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 116 [2022-11-23 16:09:03,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:09:03,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:09:03,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:09:03,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:09:03,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:03" (1/1) ... [2022-11-23 16:09:03,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:03" (1/1) ... [2022-11-23 16:09:03,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:03" (1/1) ... [2022-11-23 16:09:03,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:03" (1/1) ... [2022-11-23 16:09:03,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:03" (1/1) ... [2022-11-23 16:09:03,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:03" (1/1) ... [2022-11-23 16:09:03,821 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:03" (1/1) ... [2022-11-23 16:09:03,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:03" (1/1) ... [2022-11-23 16:09:03,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:09:03,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:09:03,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:09:03,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:09:03,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:03" (1/1) ... [2022-11-23 16:09:03,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:09:03,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:09:03,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:09:03,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:09:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 16:09:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 16:09:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2022-11-23 16:09:03,919 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2022-11-23 16:09:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 16:09:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 16:09:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 16:09:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 16:09:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2022-11-23 16:09:03,920 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2022-11-23 16:09:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-11-23 16:09:03,920 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-11-23 16:09:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 16:09:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:09:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 16:09:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-23 16:09:03,921 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-23 16:09:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:09:03,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:09:04,115 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:09:04,117 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:09:05,030 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:09:05,037 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:09:05,042 INFO L300 CfgBuilder]: Removed 41 assume(true) statements. [2022-11-23 16:09:05,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:09:05 BoogieIcfgContainer [2022-11-23 16:09:05,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:09:05,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:09:05,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:09:05,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:09:05,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:09:02" (1/3) ... [2022-11-23 16:09:05,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d33c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:09:05, skipping insertion in model container [2022-11-23 16:09:05,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:03" (2/3) ... [2022-11-23 16:09:05,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d33c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:09:05, skipping insertion in model container [2022-11-23 16:09:05,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:09:05" (3/3) ... [2022-11-23 16:09:05,074 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2022-11-23 16:09:05,102 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:09:05,103 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2022-11-23 16:09:05,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:09:05,171 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@38cfd6ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:09:05,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2022-11-23 16:09:05,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 117 states have (on average 2.1623931623931623) internal successors, (253), 206 states have internal predecessors, (253), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-23 16:09:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 16:09:05,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:05,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 16:09:05,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:05,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:05,193 INFO L85 PathProgramCache]: Analyzing trace with hash 378924727, now seen corresponding path program 1 times [2022-11-23 16:09:05,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:05,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890187728] [2022-11-23 16:09:05,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:05,208 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 [2022-11-23 16:09:05,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:05,210 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:05,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:05,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 16:09:05,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:05,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:05,333 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:05,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890187728] [2022-11-23 16:09:05,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890187728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:05,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:05,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:09:05,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499627618] [2022-11-23 16:09:05,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:05,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 16:09:05,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 16:09:05,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 16:09:05,373 INFO L87 Difference]: Start difference. First operand has 216 states, 117 states have (on average 2.1623931623931623) internal successors, (253), 206 states have internal predecessors, (253), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) 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) [2022-11-23 16:09:05,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:05,407 INFO L93 Difference]: Finished difference Result 212 states and 234 transitions. [2022-11-23 16:09:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 16:09:05,409 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 [2022-11-23 16:09:05,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:05,419 INFO L225 Difference]: With dead ends: 212 [2022-11-23 16:09:05,419 INFO L226 Difference]: Without dead ends: 210 [2022-11-23 16:09:05,421 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 [2022-11-23 16:09:05,424 INFO L413 NwaCegarLoop]: 234 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, 234 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 [2022-11-23 16:09:05,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:09:05,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-23 16:09:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-11-23 16:09:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 115 states have (on average 1.7826086956521738) internal successors, (205), 199 states have internal predecessors, (205), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 16:09:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 232 transitions. [2022-11-23 16:09:05,491 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 232 transitions. Word has length 5 [2022-11-23 16:09:05,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:05,491 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 232 transitions. [2022-11-23 16:09:05,491 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) [2022-11-23 16:09:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 232 transitions. [2022-11-23 16:09:05,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 16:09:05,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:05,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 16:09:05,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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)] Ended with exit code 0 [2022-11-23 16:09:05,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:05,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:05,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:05,714 INFO L85 PathProgramCache]: Analyzing trace with hash 378924789, now seen corresponding path program 1 times [2022-11-23 16:09:05,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:05,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632496564] [2022-11-23 16:09:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:05,718 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 [2022-11-23 16:09:05,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:05,720 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:05,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:05,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:09:05,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:05,887 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 [2022-11-23 16:09:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:05,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:05,928 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:05,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632496564] [2022-11-23 16:09:05,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632496564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:05,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:05,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:09:05,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554661551] [2022-11-23 16:09:05,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:05,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:09:05,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:05,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:09:05,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:09:05,943 INFO L87 Difference]: Start difference. First operand 210 states and 232 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-23 16:09:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:06,348 INFO L93 Difference]: Finished difference Result 229 states and 251 transitions. [2022-11-23 16:09:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:09:06,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-23 16:09:06,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:06,350 INFO L225 Difference]: With dead ends: 229 [2022-11-23 16:09:06,350 INFO L226 Difference]: Without dead ends: 229 [2022-11-23 16:09:06,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:09:06,352 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 69 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:06,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 314 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 16:09:06,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-23 16:09:06,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 207. [2022-11-23 16:09:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 115 states have (on average 1.7565217391304349) internal successors, (202), 196 states have internal predecessors, (202), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 16:09:06,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 229 transitions. [2022-11-23 16:09:06,377 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 229 transitions. Word has length 5 [2022-11-23 16:09:06,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:06,377 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 229 transitions. [2022-11-23 16:09:06,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-23 16:09:06,378 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 229 transitions. [2022-11-23 16:09:06,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 16:09:06,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:06,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 16:09:06,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:06,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:06,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:06,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash 378924790, now seen corresponding path program 1 times [2022-11-23 16:09:06,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:06,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384290303] [2022-11-23 16:09:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:06,589 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 [2022-11-23 16:09:06,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:06,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:06,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:06,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 16:09:06,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:06,700 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 [2022-11-23 16:09:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:06,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:06,723 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:06,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384290303] [2022-11-23 16:09:06,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384290303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:06,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:06,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:09:06,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488752666] [2022-11-23 16:09:06,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:06,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:09:06,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:06,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:09:06,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:09:06,726 INFO L87 Difference]: Start difference. First operand 207 states and 229 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-23 16:09:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:07,078 INFO L93 Difference]: Finished difference Result 205 states and 227 transitions. [2022-11-23 16:09:07,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:09:07,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-23 16:09:07,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:07,080 INFO L225 Difference]: With dead ends: 205 [2022-11-23 16:09:07,080 INFO L226 Difference]: Without dead ends: 205 [2022-11-23 16:09:07,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:09:07,082 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 67 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:07,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 306 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:09:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-23 16:09:07,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2022-11-23 16:09:07,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 115 states have (on average 1.7304347826086957) internal successors, (199), 193 states have internal predecessors, (199), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 16:09:07,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 226 transitions. [2022-11-23 16:09:07,100 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 226 transitions. Word has length 5 [2022-11-23 16:09:07,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:07,101 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 226 transitions. [2022-11-23 16:09:07,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-23 16:09:07,101 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 226 transitions. [2022-11-23 16:09:07,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 16:09:07,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:07,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:07,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:07,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:07,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:07,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:07,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1374843154, now seen corresponding path program 1 times [2022-11-23 16:09:07,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:07,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598939048] [2022-11-23 16:09:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:07,315 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 [2022-11-23 16:09:07,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:07,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:07,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:07,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 16:09:07,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:07,492 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 16:09:07,493 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 [2022-11-23 16:09:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:07,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:07,603 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:07,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598939048] [2022-11-23 16:09:07,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598939048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:07,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:07,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:09:07,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575449500] [2022-11-23 16:09:07,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:07,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:09:07,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:07,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:09:07,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:09:07,606 INFO L87 Difference]: Start difference. First operand 204 states and 226 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-23 16:09:08,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:08,234 INFO L93 Difference]: Finished difference Result 241 states and 262 transitions. [2022-11-23 16:09:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:09:08,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2022-11-23 16:09:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:08,236 INFO L225 Difference]: With dead ends: 241 [2022-11-23 16:09:08,236 INFO L226 Difference]: Without dead ends: 241 [2022-11-23 16:09:08,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:09:08,237 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 269 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:08,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 399 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 16:09:08,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-23 16:09:08,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 218. [2022-11-23 16:09:08,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 129 states have (on average 1.751937984496124) internal successors, (226), 206 states have internal predecessors, (226), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 16:09:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 253 transitions. [2022-11-23 16:09:08,259 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 253 transitions. Word has length 8 [2022-11-23 16:09:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:08,260 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 253 transitions. [2022-11-23 16:09:08,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-23 16:09:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 253 transitions. [2022-11-23 16:09:08,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 16:09:08,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:08,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:08,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:08,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:08,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:08,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1374843155, now seen corresponding path program 1 times [2022-11-23 16:09:08,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:08,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406506670] [2022-11-23 16:09:08,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:08,483 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 [2022-11-23 16:09:08,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:08,484 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:08,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:08,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 16:09:08,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:08,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:09:08,734 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 [2022-11-23 16:09:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:08,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:08,838 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:08,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406506670] [2022-11-23 16:09:08,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406506670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:08,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:08,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:09:08,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271486516] [2022-11-23 16:09:08,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:08,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:09:08,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:08,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:09:08,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 16:09:08,841 INFO L87 Difference]: Start difference. First operand 218 states and 253 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-23 16:09:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:09,614 INFO L93 Difference]: Finished difference Result 222 states and 246 transitions. [2022-11-23 16:09:09,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:09:09,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2022-11-23 16:09:09,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:09,616 INFO L225 Difference]: With dead ends: 222 [2022-11-23 16:09:09,616 INFO L226 Difference]: Without dead ends: 222 [2022-11-23 16:09:09,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:09:09,617 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 268 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:09,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 310 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 16:09:09,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-23 16:09:09,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 210. [2022-11-23 16:09:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 125 states have (on average 1.696) internal successors, (212), 198 states have internal predecessors, (212), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 16:09:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 239 transitions. [2022-11-23 16:09:09,627 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 239 transitions. Word has length 8 [2022-11-23 16:09:09,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:09,628 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 239 transitions. [2022-11-23 16:09:09,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-23 16:09:09,628 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 239 transitions. [2022-11-23 16:09:09,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 16:09:09,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:09,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:09,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:09,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:09,854 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:09,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:09,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1625645901, now seen corresponding path program 1 times [2022-11-23 16:09:09,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:09,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960032339] [2022-11-23 16:09:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:09,855 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 [2022-11-23 16:09:09,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:09,856 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:09,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:09,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 16:09:09,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:10,054 INFO L321 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2022-11-23 16:09:10,055 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 18 treesize of output 16 [2022-11-23 16:09:10,111 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 [2022-11-23 16:09:10,200 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 [2022-11-23 16:09:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:10,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:10,255 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:10,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960032339] [2022-11-23 16:09:10,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960032339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:10,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:10,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 16:09:10,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814043729] [2022-11-23 16:09:10,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:10,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 16:09:10,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:10,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 16:09:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 16:09:10,258 INFO L87 Difference]: Start difference. First operand 210 states and 239 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-11-23 16:09:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:11,069 INFO L93 Difference]: Finished difference Result 231 states and 260 transitions. [2022-11-23 16:09:11,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 16:09:11,070 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 10 [2022-11-23 16:09:11,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:11,072 INFO L225 Difference]: With dead ends: 231 [2022-11-23 16:09:11,072 INFO L226 Difference]: Without dead ends: 231 [2022-11-23 16:09:11,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-23 16:09:11,073 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 44 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:11,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1039 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 16:09:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-23 16:09:11,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 224. [2022-11-23 16:09:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 137 states have (on average 1.686131386861314) internal successors, (231), 211 states have internal predecessors, (231), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 16:09:11,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 260 transitions. [2022-11-23 16:09:11,084 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 260 transitions. Word has length 10 [2022-11-23 16:09:11,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:11,084 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 260 transitions. [2022-11-23 16:09:11,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-11-23 16:09:11,084 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 260 transitions. [2022-11-23 16:09:11,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 16:09:11,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:11,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:11,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:11,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:11,298 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:11,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:11,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1625645900, now seen corresponding path program 1 times [2022-11-23 16:09:11,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:11,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034903643] [2022-11-23 16:09:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:11,300 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 [2022-11-23 16:09:11,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:11,301 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:11,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:11,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-23 16:09:11,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:11,530 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 16:09:11,531 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 [2022-11-23 16:09:11,555 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:09:11,556 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 [2022-11-23 16:09:11,632 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 [2022-11-23 16:09:11,643 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 [2022-11-23 16:09:11,793 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 [2022-11-23 16:09:11,800 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 [2022-11-23 16:09:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:11,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:11,860 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:11,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034903643] [2022-11-23 16:09:11,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034903643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:11,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:11,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 16:09:11,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807082135] [2022-11-23 16:09:11,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:11,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 16:09:11,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:11,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 16:09:11,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 16:09:11,863 INFO L87 Difference]: Start difference. First operand 224 states and 260 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-11-23 16:09:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:13,113 INFO L93 Difference]: Finished difference Result 230 states and 259 transitions. [2022-11-23 16:09:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 16:09:13,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 10 [2022-11-23 16:09:13,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:13,115 INFO L225 Difference]: With dead ends: 230 [2022-11-23 16:09:13,115 INFO L226 Difference]: Without dead ends: 230 [2022-11-23 16:09:13,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-23 16:09:13,117 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 53 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:13,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 971 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 16:09:13,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-23 16:09:13,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2022-11-23 16:09:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 137 states have (on average 1.6788321167883211) internal successors, (230), 211 states have internal predecessors, (230), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 16:09:13,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 259 transitions. [2022-11-23 16:09:13,125 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 259 transitions. Word has length 10 [2022-11-23 16:09:13,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:13,126 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 259 transitions. [2022-11-23 16:09:13,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-11-23 16:09:13,126 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 259 transitions. [2022-11-23 16:09:13,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 16:09:13,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:13,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:13,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:13,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:13,339 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:13,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:13,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1144584946, now seen corresponding path program 1 times [2022-11-23 16:09:13,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:13,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031977099] [2022-11-23 16:09:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:13,340 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 [2022-11-23 16:09:13,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:13,341 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:13,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:13,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 16:09:13,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:13,451 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 [2022-11-23 16:09:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:13,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:13,503 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:13,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031977099] [2022-11-23 16:09:13,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031977099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:13,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:13,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:09:13,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037923877] [2022-11-23 16:09:13,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:13,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:09:13,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:13,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:09:13,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 16:09:13,506 INFO L87 Difference]: Start difference. First operand 224 states and 259 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-11-23 16:09:14,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:14,098 INFO L93 Difference]: Finished difference Result 245 states and 270 transitions. [2022-11-23 16:09:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 16:09:14,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2022-11-23 16:09:14,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:14,100 INFO L225 Difference]: With dead ends: 245 [2022-11-23 16:09:14,100 INFO L226 Difference]: Without dead ends: 245 [2022-11-23 16:09:14,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:09:14,101 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 105 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:14,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 703 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:09:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-23 16:09:14,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 223. [2022-11-23 16:09:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 137 states have (on average 1.6423357664233578) internal successors, (225), 210 states have internal predecessors, (225), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 16:09:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 254 transitions. [2022-11-23 16:09:14,109 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 254 transitions. Word has length 11 [2022-11-23 16:09:14,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:14,109 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 254 transitions. [2022-11-23 16:09:14,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-11-23 16:09:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 254 transitions. [2022-11-23 16:09:14,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 16:09:14,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:14,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:14,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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)] Ended with exit code 0 [2022-11-23 16:09:14,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:14,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:14,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:14,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1144584947, now seen corresponding path program 1 times [2022-11-23 16:09:14,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:14,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060206206] [2022-11-23 16:09:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:14,323 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 [2022-11-23 16:09:14,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:14,324 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:14,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:14,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 16:09:14,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:14,426 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 [2022-11-23 16:09:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:14,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:14,523 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:14,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060206206] [2022-11-23 16:09:14,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060206206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:14,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:14,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:09:14,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349538987] [2022-11-23 16:09:14,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:14,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:09:14,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:14,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:09:14,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 16:09:14,525 INFO L87 Difference]: Start difference. First operand 223 states and 254 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-11-23 16:09:15,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:15,293 INFO L93 Difference]: Finished difference Result 227 states and 250 transitions. [2022-11-23 16:09:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:09:15,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2022-11-23 16:09:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:15,295 INFO L225 Difference]: With dead ends: 227 [2022-11-23 16:09:15,296 INFO L226 Difference]: Without dead ends: 227 [2022-11-23 16:09:15,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:09:15,297 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 94 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:15,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 719 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 16:09:15,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-23 16:09:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2022-11-23 16:09:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 137 states have (on average 1.6131386861313868) internal successors, (221), 210 states have internal predecessors, (221), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 16:09:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 250 transitions. [2022-11-23 16:09:15,305 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 250 transitions. Word has length 11 [2022-11-23 16:09:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:15,305 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 250 transitions. [2022-11-23 16:09:15,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-11-23 16:09:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 250 transitions. [2022-11-23 16:09:15,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 16:09:15,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:15,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:15,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:15,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:15,515 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting list_addErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:15,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:15,515 INFO L85 PathProgramCache]: Analyzing trace with hash 434515829, now seen corresponding path program 1 times [2022-11-23 16:09:15,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:15,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951740666] [2022-11-23 16:09:15,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:15,516 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 [2022-11-23 16:09:15,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:15,517 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:15,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:15,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 16:09:15,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:15,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:15,670 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:15,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951740666] [2022-11-23 16:09:15,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951740666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:15,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:15,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:09:15,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840060424] [2022-11-23 16:09:15,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:15,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:09:15,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:15,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:09:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:09:15,673 INFO L87 Difference]: Start difference. First operand 223 states and 250 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-23 16:09:15,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:15,941 INFO L93 Difference]: Finished difference Result 222 states and 247 transitions. [2022-11-23 16:09:15,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:09:15,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 13 [2022-11-23 16:09:15,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:15,943 INFO L225 Difference]: With dead ends: 222 [2022-11-23 16:09:15,943 INFO L226 Difference]: Without dead ends: 222 [2022-11-23 16:09:15,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:09:15,943 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 22 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:15,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 499 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:09:15,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-23 16:09:15,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-11-23 16:09:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 137 states have (on average 1.5912408759124088) internal successors, (218), 209 states have internal predecessors, (218), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 16:09:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 247 transitions. [2022-11-23 16:09:15,954 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 247 transitions. Word has length 13 [2022-11-23 16:09:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:15,954 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 247 transitions. [2022-11-23 16:09:15,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-23 16:09:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 247 transitions. [2022-11-23 16:09:15,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 16:09:15,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:15,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:15,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:16,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:16,167 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting list_addErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:16,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:16,167 INFO L85 PathProgramCache]: Analyzing trace with hash 434515830, now seen corresponding path program 1 times [2022-11-23 16:09:16,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:16,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866390968] [2022-11-23 16:09:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:16,168 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 [2022-11-23 16:09:16,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:16,169 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:16,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:16,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 16:09:16,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:16,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:16,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:16,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866390968] [2022-11-23 16:09:16,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866390968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:16,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:16,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:09:16,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823600310] [2022-11-23 16:09:16,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:16,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 16:09:16,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:16,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 16:09:16,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:09:16,392 INFO L87 Difference]: Start difference. First operand 222 states and 247 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-11-23 16:09:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:17,021 INFO L93 Difference]: Finished difference Result 224 states and 245 transitions. [2022-11-23 16:09:17,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 16:09:17,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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 13 [2022-11-23 16:09:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:17,023 INFO L225 Difference]: With dead ends: 224 [2022-11-23 16:09:17,024 INFO L226 Difference]: Without dead ends: 224 [2022-11-23 16:09:17,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 16:09:17,024 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 250 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:17,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 917 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:09:17,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-23 16:09:17,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2022-11-23 16:09:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 137 states have (on average 1.5766423357664234) internal successors, (216), 209 states have internal predecessors, (216), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 16:09:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 245 transitions. [2022-11-23 16:09:17,032 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 245 transitions. Word has length 13 [2022-11-23 16:09:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:17,032 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 245 transitions. [2022-11-23 16:09:17,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-11-23 16:09:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 245 transitions. [2022-11-23 16:09:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 16:09:17,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:17,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:17,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:17,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:17,246 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:17,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:17,247 INFO L85 PathProgramCache]: Analyzing trace with hash 853908818, now seen corresponding path program 1 times [2022-11-23 16:09:17,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:17,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324063129] [2022-11-23 16:09:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:17,247 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 [2022-11-23 16:09:17,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:17,249 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:17,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:17,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 16:09:17,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:17,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:17,467 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:17,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324063129] [2022-11-23 16:09:17,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324063129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:17,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:17,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:09:17,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741049324] [2022-11-23 16:09:17,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:17,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:09:17,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:17,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:09:17,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:09:17,469 INFO L87 Difference]: Start difference. First operand 222 states and 245 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:09:17,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:17,654 INFO L93 Difference]: Finished difference Result 221 states and 243 transitions. [2022-11-23 16:09:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:09:17,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-23 16:09:17,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:17,656 INFO L225 Difference]: With dead ends: 221 [2022-11-23 16:09:17,656 INFO L226 Difference]: Without dead ends: 221 [2022-11-23 16:09:17,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:09:17,657 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 297 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:17,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 453 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:09:17,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-23 16:09:17,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2022-11-23 16:09:17,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 137 states have (on average 1.5693430656934306) internal successors, (215), 208 states have internal predecessors, (215), 21 states have call successors, (21), 6 states have call predecessors, (21), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 16:09:17,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 243 transitions. [2022-11-23 16:09:17,664 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 243 transitions. Word has length 27 [2022-11-23 16:09:17,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:17,664 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 243 transitions. [2022-11-23 16:09:17,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:09:17,664 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 243 transitions. [2022-11-23 16:09:17,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 16:09:17,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:17,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:17,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:17,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:17,883 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting inspectErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:17,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:17,883 INFO L85 PathProgramCache]: Analyzing trace with hash 853896473, now seen corresponding path program 1 times [2022-11-23 16:09:17,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:17,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381741899] [2022-11-23 16:09:17,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:17,884 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 [2022-11-23 16:09:17,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:17,886 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:17,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:18,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 16:09:18,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:18,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:18,153 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:18,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381741899] [2022-11-23 16:09:18,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381741899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:18,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:18,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 16:09:18,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086887893] [2022-11-23 16:09:18,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:18,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 16:09:18,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:18,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 16:09:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:09:18,156 INFO L87 Difference]: Start difference. First operand 221 states and 243 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:09:18,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:18,917 INFO L93 Difference]: Finished difference Result 216 states and 238 transitions. [2022-11-23 16:09:18,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 16:09:18,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-23 16:09:18,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:18,918 INFO L225 Difference]: With dead ends: 216 [2022-11-23 16:09:18,919 INFO L226 Difference]: Without dead ends: 216 [2022-11-23 16:09:18,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-23 16:09:18,919 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 381 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:18,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 424 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 16:09:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-23 16:09:18,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-23 16:09:18,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 137 states have (on average 1.532846715328467) internal successors, (210), 203 states have internal predecessors, (210), 21 states have call successors, (21), 6 states have call predecessors, (21), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 16:09:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 238 transitions. [2022-11-23 16:09:18,927 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 238 transitions. Word has length 27 [2022-11-23 16:09:18,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:18,928 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 238 transitions. [2022-11-23 16:09:18,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:09:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 238 transitions. [2022-11-23 16:09:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 16:09:18,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:18,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:18,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 16:09:19,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:19,143 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting inspectErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:19,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:19,143 INFO L85 PathProgramCache]: Analyzing trace with hash 853896474, now seen corresponding path program 1 times [2022-11-23 16:09:19,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:19,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835481624] [2022-11-23 16:09:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:19,144 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 [2022-11-23 16:09:19,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:19,145 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:19,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:19,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 16:09:19,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:19,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:19,540 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:19,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835481624] [2022-11-23 16:09:19,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835481624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:19,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:19,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 16:09:19,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788986269] [2022-11-23 16:09:19,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:19,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 16:09:19,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:19,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 16:09:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:09:19,542 INFO L87 Difference]: Start difference. First operand 216 states and 238 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:09:20,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:20,888 INFO L93 Difference]: Finished difference Result 215 states and 237 transitions. [2022-11-23 16:09:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 16:09:20,889 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-23 16:09:20,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:20,890 INFO L225 Difference]: With dead ends: 215 [2022-11-23 16:09:20,890 INFO L226 Difference]: Without dead ends: 215 [2022-11-23 16:09:20,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:09:20,891 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 492 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:20,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 480 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 16:09:20,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-23 16:09:20,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2022-11-23 16:09:20,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 137 states have (on average 1.5255474452554745) internal successors, (209), 202 states have internal predecessors, (209), 21 states have call successors, (21), 6 states have call predecessors, (21), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 16:09:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 237 transitions. [2022-11-23 16:09:20,898 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 237 transitions. Word has length 27 [2022-11-23 16:09:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:20,898 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 237 transitions. [2022-11-23 16:09:20,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:09:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 237 transitions. [2022-11-23 16:09:20,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 16:09:20,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:20,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:20,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:21,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:21,100 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:21,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:21,101 INFO L85 PathProgramCache]: Analyzing trace with hash -661448180, now seen corresponding path program 1 times [2022-11-23 16:09:21,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:21,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023547036] [2022-11-23 16:09:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:21,101 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 [2022-11-23 16:09:21,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:21,103 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:21,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (16)] Waiting until timeout for monitored process [2022-11-23 16:09:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:21,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 16:09:21,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:21,332 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:09:21,336 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 [2022-11-23 16:09:21,497 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 11 treesize of output 7 [2022-11-23 16:09:21,567 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 [2022-11-23 16:09:21,594 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:09:21,594 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 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-23 16:09:21,741 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:09:21,742 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 16 treesize of output 11 [2022-11-23 16:09:21,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:21,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:09:21,766 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:21,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023547036] [2022-11-23 16:09:21,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023547036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:21,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:21,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 16:09:21,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837619895] [2022-11-23 16:09:21,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:21,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 16:09:21,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:21,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 16:09:21,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:09:21,767 INFO L87 Difference]: Start difference. First operand 215 states and 237 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:09:23,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:23,998 INFO L93 Difference]: Finished difference Result 360 states and 397 transitions. [2022-11-23 16:09:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 16:09:24,003 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-11-23 16:09:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:24,005 INFO L225 Difference]: With dead ends: 360 [2022-11-23 16:09:24,005 INFO L226 Difference]: Without dead ends: 360 [2022-11-23 16:09:24,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-11-23 16:09:24,007 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 1004 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:24,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 991 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 16:09:24,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-23 16:09:24,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 294. [2022-11-23 16:09:24,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 211 states have (on average 1.5545023696682465) internal successors, (328), 277 states have internal predecessors, (328), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 16:09:24,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 362 transitions. [2022-11-23 16:09:24,018 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 362 transitions. Word has length 30 [2022-11-23 16:09:24,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:24,018 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 362 transitions. [2022-11-23 16:09:24,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:09:24,019 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 362 transitions. [2022-11-23 16:09:24,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 16:09:24,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:24,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:24,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (16)] Forceful destruction successful, exit code 0 [2022-11-23 16:09:24,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:24,233 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:24,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:24,234 INFO L85 PathProgramCache]: Analyzing trace with hash -662300209, now seen corresponding path program 1 times [2022-11-23 16:09:24,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:24,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879569859] [2022-11-23 16:09:24,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:24,235 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 [2022-11-23 16:09:24,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:24,236 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:24,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:24,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-23 16:09:24,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:24,568 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 16:09:24,568 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 [2022-11-23 16:09:25,036 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 11 treesize of output 7 [2022-11-23 16:09:25,242 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 [2022-11-23 16:09:25,273 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:09:25,273 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 1 case distinctions, treesize of input 30 treesize of output 31 [2022-11-23 16:09:25,403 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-23 16:09:25,404 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 [2022-11-23 16:09:25,532 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 [2022-11-23 16:09:25,785 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 35 treesize of output 19 [2022-11-23 16:09:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:25,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:09:26,113 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_493) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-23 16:09:26,852 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:09:26,852 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 28 treesize of output 29 [2022-11-23 16:09:26,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:09:26,860 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 44 treesize of output 36 [2022-11-23 16:09:26,866 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 16 treesize of output 14 [2022-11-23 16:09:33,143 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 34 DAG size of output: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:33,146 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:09:33,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879569859] [2022-11-23 16:09:33,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879569859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:09:33,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1161071069] [2022-11-23 16:09:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:33,146 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:09:33,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:09:33,147 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:09:33,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-23 16:09:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:33,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-23 16:09:33,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:33,902 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-23 16:09:33,902 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 26 treesize of output 43 [2022-11-23 16:09:34,820 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 11 treesize of output 7 [2022-11-23 16:09:35,201 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 [2022-11-23 16:09:35,245 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:09:35,246 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 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-23 16:09:35,485 INFO L321 Elim1Store]: treesize reduction 78, result has 35.0 percent of original size [2022-11-23 16:09:35,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 67 [2022-11-23 16:09:35,663 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 42 treesize of output 38 [2022-11-23 16:09:35,869 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 35 treesize of output 19 [2022-11-23 16:09:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:36,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:09:36,038 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_572 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_572) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (_ bv1 1)))) is different from false [2022-11-23 16:09:36,776 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:09:36,777 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 28 treesize of output 29 [2022-11-23 16:09:36,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:09:36,787 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 44 treesize of output 36 [2022-11-23 16:09:36,798 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 16 treesize of output 14 [2022-11-23 16:09:39,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1161071069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:09:39,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130855521] [2022-11-23 16:09:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:39,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:09:39,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:09:39,069 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:09:39,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-23 16:09:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:39,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-23 16:09:39,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:39,273 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:09:39,274 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 [2022-11-23 16:09:40,128 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 11 treesize of output 7 [2022-11-23 16:09:40,351 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 [2022-11-23 16:09:40,390 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:09:40,390 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 1 case distinctions, treesize of input 30 treesize of output 31 [2022-11-23 16:09:40,473 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-23 16:09:40,473 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 [2022-11-23 16:09:40,645 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 [2022-11-23 16:09:40,847 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 [2022-11-23 16:09:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:40,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:09:42,369 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:09:42,370 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 28 treesize of output 29 [2022-11-23 16:09:42,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:09:42,375 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 44 treesize of output 36 [2022-11-23 16:09:42,382 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 16 treesize of output 14 [2022-11-23 16:09:44,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130855521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:09:44,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:09:44,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 41 [2022-11-23 16:09:44,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159509378] [2022-11-23 16:09:44,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:09:44,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-23 16:09:44,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:44,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-23 16:09:44,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=2672, Unknown=83, NotChecked=218, Total=3306 [2022-11-23 16:09:44,631 INFO L87 Difference]: Start difference. First operand 294 states and 362 transitions. Second operand has 43 states, 40 states have (on average 1.775) internal successors, (71), 36 states have internal predecessors, (71), 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) [2022-11-23 16:09:51,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:51,431 INFO L93 Difference]: Finished difference Result 393 states and 430 transitions. [2022-11-23 16:09:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 16:09:51,432 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 1.775) internal successors, (71), 36 states have internal predecessors, (71), 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 29 [2022-11-23 16:09:51,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:51,434 INFO L225 Difference]: With dead ends: 393 [2022-11-23 16:09:51,434 INFO L226 Difference]: Without dead ends: 393 [2022-11-23 16:09:51,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=638, Invalid=3977, Unknown=85, NotChecked=270, Total=4970 [2022-11-23 16:09:51,436 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 721 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:51,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 2299 Invalid, 2155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-23 16:09:51,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-23 16:09:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 294. [2022-11-23 16:09:51,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 211 states have (on average 1.5497630331753554) internal successors, (327), 277 states have internal predecessors, (327), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 16:09:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 361 transitions. [2022-11-23 16:09:51,445 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 361 transitions. Word has length 29 [2022-11-23 16:09:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:51,446 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 361 transitions. [2022-11-23 16:09:51,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 1.775) internal successors, (71), 36 states have internal predecessors, (71), 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) [2022-11-23 16:09:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 361 transitions. [2022-11-23 16:09:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 16:09:51,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:51,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:51,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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)] Ended with exit code 0 [2022-11-23 16:09:51,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-23 16:09:51,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-23 16:09:52,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 16:09:52,062 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:09:52,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash -662300208, now seen corresponding path program 1 times [2022-11-23 16:09:52,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:09:52,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437182276] [2022-11-23 16:09:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:52,063 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 [2022-11-23 16:09:52,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:09:52,064 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:09:52,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:09:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:52,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-23 16:09:52,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:52,384 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 [2022-11-23 16:09:52,400 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:09:52,401 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 [2022-11-23 16:09:52,843 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 11 treesize of output 7 [2022-11-23 16:09:52,852 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 11 treesize of output 7 [2022-11-23 16:09:53,097 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 [2022-11-23 16:09:53,119 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 [2022-11-23 16:09:53,155 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:09:53,155 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 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-23 16:09:53,162 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 18 treesize of output 20 [2022-11-23 16:09:53,306 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:09:53,306 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 [2022-11-23 16:09:53,335 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-23 16:09:53,336 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 16 treesize of output 18 [2022-11-23 16:09:53,439 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 24 treesize of output 24 [2022-11-23 16:09:53,457 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 [2022-11-23 16:09:53,653 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 [2022-11-23 16:09:53,656 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 15 treesize of output 7 [2022-11-23 16:09:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:53,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:09:54,319 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_734 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_734) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_733) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) (forall ((v_ArrVal_734 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_734) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32)))))) is different from false [2022-11-23 16:09:56,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:09:56,848 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 119 treesize of output 143 [2022-11-23 16:09:56,883 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:09:56,883 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 106 treesize of output 107 [2022-11-23 16:09:56,911 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:09:56,912 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 96 treesize of output 97 [2022-11-23 16:09:56,934 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 316 treesize of output 304 [2022-11-23 16:09:56,952 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 826 treesize of output 790 [2022-11-23 16:09:56,984 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 783 treesize of output 767 [2022-11-23 16:09:56,999 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 767 treesize of output 735 [2022-11-23 16:09:57,013 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 735 treesize of output 703 [2022-11-23 16:09:57,034 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 703 treesize of output 687 [2022-11-23 16:09:57,073 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:09:57,073 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 687 treesize of output 678 [2022-11-23 16:09:57,093 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 816 treesize of output 796 [2022-11-23 16:09:57,116 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 789 treesize of output 781 [2022-11-23 16:09:57,148 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 781 treesize of output 765 [2022-11-23 16:10:27,333 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:10:27,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437182276] [2022-11-23 16:10:27,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437182276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:27,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [880650948] [2022-11-23 16:10:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:27,334 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:10:27,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:10:27,339 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:10:27,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-23 16:10:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:28,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-23 16:10:28,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:28,266 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 16:10:28,267 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 [2022-11-23 16:10:28,291 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 [2022-11-23 16:10:29,774 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 11 treesize of output 7 [2022-11-23 16:10:29,816 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 11 treesize of output 7 [2022-11-23 16:10:30,393 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 [2022-11-23 16:10:30,416 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 [2022-11-23 16:10:30,475 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:10:30,476 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 1 case distinctions, treesize of input 49 treesize of output 46 [2022-11-23 16:10:30,488 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 18 treesize of output 20 [2022-11-23 16:10:30,781 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-23 16:10:30,781 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 [2022-11-23 16:10:30,805 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 [2022-11-23 16:10:31,030 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 [2022-11-23 16:10:31,048 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 [2022-11-23 16:10:31,628 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 [2022-11-23 16:10:31,643 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 [2022-11-23 16:10:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:31,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:31,790 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_822 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_823 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_823) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_822) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) (forall ((v_ArrVal_823 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_823) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2022-11-23 16:10:36,359 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:10:36,359 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 48 treesize of output 49 [2022-11-23 16:10:36,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:36,367 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 84 treesize of output 76 [2022-11-23 16:10:36,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:10:36,393 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 72 treesize of output 62 [2022-11-23 16:10:36,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:36,400 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 96 treesize of output 84 [2022-11-23 16:10:36,416 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 40 treesize of output 36 [2022-11-23 16:10:36,424 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 74 treesize of output 70 [2022-11-23 16:10:37,313 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:10:37,313 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 47 treesize of output 38 [2022-11-23 16:10:37,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:37,320 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 46 treesize of output 34 [2022-11-23 16:10:37,325 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 11 treesize of output 7 [2022-11-23 16:10:43,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [880650948] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:43,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364087829] [2022-11-23 16:10:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:43,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:43,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:43,268 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:43,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-23 16:10:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:43,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-23 16:10:43,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:43,511 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 [2022-11-23 16:10:43,564 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 16:10:43,564 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 [2022-11-23 16:10:45,171 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 11 treesize of output 7 [2022-11-23 16:10:45,197 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 11 treesize of output 7 [2022-11-23 16:10:45,909 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 [2022-11-23 16:10:45,925 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 [2022-11-23 16:10:45,983 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:10:45,983 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 1 case distinctions, treesize of input 49 treesize of output 46 [2022-11-23 16:10:46,001 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 18 treesize of output 20 [2022-11-23 16:10:46,316 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-23 16:10:46,317 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 [2022-11-23 16:10:46,345 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 [2022-11-23 16:10:46,560 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 32 treesize of output 30 [2022-11-23 16:10:46,577 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 [2022-11-23 16:10:46,631 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 [2022-11-23 16:10:46,635 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 [2022-11-23 16:10:46,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:46,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:46,776 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_912 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_911 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_912) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_911) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) (forall ((v_ArrVal_912 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_912) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2022-11-23 16:10:46,887 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_31| (_ BitVec 32))) (or (forall ((v_ArrVal_912 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_31| v_ArrVal_912) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd .cse0 (_ bv8 32))))) (not (= (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_31|) (_ bv0 1))))) (forall ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_31| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_31|) (_ bv0 1))) (forall ((v_ArrVal_910 (_ BitVec 32)) (v_ArrVal_912 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_911 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_31| v_ArrVal_912) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select (store |c_#length| |v_ULTIMATE.start_gl_insert_~node~1#1.base_31| v_ArrVal_910) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_31| v_ArrVal_911) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))) is different from false [2022-11-23 16:10:50,565 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:10:50,566 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 47 treesize of output 38 [2022-11-23 16:10:50,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:50,572 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 46 treesize of output 34 [2022-11-23 16:10:50,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:10:50,618 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 48 treesize of output 49 [2022-11-23 16:10:50,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:50,627 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 84 treesize of output 76 [2022-11-23 16:10:50,645 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:10:50,645 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 72 treesize of output 62 [2022-11-23 16:10:50,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:50,653 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 96 treesize of output 84 [2022-11-23 16:10:50,667 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 40 treesize of output 36 [2022-11-23 16:10:50,673 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 74 treesize of output 70 [2022-11-23 16:12:04,873 WARN L233 SmtUtils]: Spent 1.17m on a formula simplification. DAG size of input: 72 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:12:04,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364087829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:12:04,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:12:04,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-11-23 16:12:04,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900724039] [2022-11-23 16:12:04,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:12:04,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-23 16:12:04,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:12:04,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-23 16:12:04,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=2357, Unknown=30, NotChecked=412, Total=3080 [2022-11-23 16:12:04,877 INFO L87 Difference]: Start difference. First operand 294 states and 361 transitions. Second operand has 39 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 33 states have internal predecessors, (70), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 16:12:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:12:15,952 INFO L93 Difference]: Finished difference Result 374 states and 411 transitions. [2022-11-23 16:12:15,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 16:12:15,953 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 33 states have internal predecessors, (70), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2022-11-23 16:12:15,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:12:15,955 INFO L225 Difference]: With dead ends: 374 [2022-11-23 16:12:15,955 INFO L226 Difference]: Without dead ends: 374 [2022-11-23 16:12:15,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 100.1s TimeCoverageRelationStatistics Valid=603, Invalid=3543, Unknown=30, NotChecked=516, Total=4692 [2022-11-23 16:12:15,957 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 1290 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 2019 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:12:15,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1505 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2019 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-23 16:12:15,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-23 16:12:15,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 280. [2022-11-23 16:12:15,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 199 states have (on average 1.5778894472361809) internal successors, (314), 264 states have internal predecessors, (314), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-23 16:12:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 346 transitions. [2022-11-23 16:12:15,967 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 346 transitions. Word has length 29 [2022-11-23 16:12:15,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:12:15,967 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 346 transitions. [2022-11-23 16:12:15,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 33 states have internal predecessors, (70), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 16:12:15,968 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 346 transitions. [2022-11-23 16:12:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 16:12:15,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:15,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:12:15,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-23 16:12:16,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:12:16,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-23 16:12:16,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 16:12:16,577 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting inspectErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:12:16,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:16,578 INFO L85 PathProgramCache]: Analyzing trace with hash -661459978, now seen corresponding path program 1 times [2022-11-23 16:12:16,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:12:16,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584484671] [2022-11-23 16:12:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:16,578 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 [2022-11-23 16:12:16,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:12:16,579 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:12:16,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:12:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:16,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 16:12:16,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:16,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:16,866 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 [2022-11-23 16:12:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:17,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:12:17,300 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:12:17,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584484671] [2022-11-23 16:12:17,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584484671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:12:17,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:12:17,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:12:17,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494452773] [2022-11-23 16:12:17,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:12:17,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:12:17,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:12:17,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:12:17,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 16:12:17,302 INFO L87 Difference]: Start difference. First operand 280 states and 346 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:12:18,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:12:18,408 INFO L93 Difference]: Finished difference Result 278 states and 342 transitions. [2022-11-23 16:12:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:12:18,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-11-23 16:12:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:12:18,410 INFO L225 Difference]: With dead ends: 278 [2022-11-23 16:12:18,411 INFO L226 Difference]: Without dead ends: 278 [2022-11-23 16:12:18,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:12:18,412 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 290 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:12:18,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 219 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 16:12:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-23 16:12:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-11-23 16:12:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 199 states have (on average 1.5577889447236182) internal successors, (310), 262 states have internal predecessors, (310), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-23 16:12:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 342 transitions. [2022-11-23 16:12:18,435 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 342 transitions. Word has length 30 [2022-11-23 16:12:18,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:12:18,437 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 342 transitions. [2022-11-23 16:12:18,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:12:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 342 transitions. [2022-11-23 16:12:18,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 16:12:18,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:18,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:12:18,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:12:18,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:12:18,651 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:12:18,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:18,652 INFO L85 PathProgramCache]: Analyzing trace with hash -244243135, now seen corresponding path program 1 times [2022-11-23 16:12:18,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:12:18,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327832119] [2022-11-23 16:12:18,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:18,652 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 [2022-11-23 16:12:18,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:12:18,654 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:12:18,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (24)] Waiting until timeout for monitored process [2022-11-23 16:12:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:18,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-23 16:12:18,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:19,097 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:12:19,098 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 [2022-11-23 16:12:19,173 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 14 treesize of output 16 [2022-11-23 16:12:19,191 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 14 treesize of output 16 [2022-11-23 16:12:19,215 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 7 treesize of output 3 [2022-11-23 16:12:19,239 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 [2022-11-23 16:12:20,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:20,397 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-11-23 16:12:20,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:20,430 INFO L321 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-11-23 16:12:20,431 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 39 treesize of output 38 [2022-11-23 16:12:20,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:20,442 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 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-23 16:12:20,449 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 21 treesize of output 13 [2022-11-23 16:12:20,586 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 [2022-11-23 16:12:20,617 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:12:20,617 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 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-23 16:12:21,011 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-23 16:12:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:21,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:12:21,109 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:12:21,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327832119] [2022-11-23 16:12:21,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327832119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:12:21,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:12:21,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-23 16:12:21,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17529013] [2022-11-23 16:12:21,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:12:21,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 16:12:21,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:12:21,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 16:12:21,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=225, Unknown=13, NotChecked=0, Total=272 [2022-11-23 16:12:21,111 INFO L87 Difference]: Start difference. First operand 278 states and 342 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:12:32,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:12:32,329 INFO L93 Difference]: Finished difference Result 452 states and 534 transitions. [2022-11-23 16:12:32,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 16:12:32,330 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-11-23 16:12:32,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:12:32,332 INFO L225 Difference]: With dead ends: 452 [2022-11-23 16:12:32,332 INFO L226 Difference]: Without dead ends: 452 [2022-11-23 16:12:32,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=94, Invalid=533, Unknown=23, NotChecked=0, Total=650 [2022-11-23 16:12:32,333 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 403 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 46 mSolverCounterUnsat, 171 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 171 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:12:32,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1171 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2072 Invalid, 171 Unknown, 0 Unchecked, 9.9s Time] [2022-11-23 16:12:32,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-23 16:12:32,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 379. [2022-11-23 16:12:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5273972602739727) internal successors, (446), 356 states have internal predecessors, (446), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:12:32,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 488 transitions. [2022-11-23 16:12:32,346 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 488 transitions. Word has length 33 [2022-11-23 16:12:32,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:12:32,346 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 488 transitions. [2022-11-23 16:12:32,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:12:32,347 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 488 transitions. [2022-11-23 16:12:32,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 16:12:32,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:32,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:12:32,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (24)] Ended with exit code 0 [2022-11-23 16:12:32,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:12:32,562 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:12:32,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:32,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1920035533, now seen corresponding path program 1 times [2022-11-23 16:12:32,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:12:32,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797547931] [2022-11-23 16:12:32,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:32,563 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 [2022-11-23 16:12:32,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:12:32,565 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:12:32,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:12:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:32,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-23 16:12:32,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:32,983 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:12:32,983 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 [2022-11-23 16:12:33,092 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 [2022-11-23 16:12:33,105 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 [2022-11-23 16:12:33,137 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 [2022-11-23 16:12:33,163 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 [2022-11-23 16:12:34,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:34,383 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-11-23 16:12:34,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:34,394 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 35 treesize of output 30 [2022-11-23 16:12:34,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:34,404 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 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-23 16:12:34,411 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 21 treesize of output 13 [2022-11-23 16:12:34,546 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 [2022-11-23 16:12:34,597 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:12:34,597 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 1 case distinctions, treesize of input 33 treesize of output 34 [2022-11-23 16:12:35,178 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 [2022-11-23 16:12:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:35,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:12:35,367 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:12:35,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797547931] [2022-11-23 16:12:35,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797547931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:12:35,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:12:35,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-23 16:12:35,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259396831] [2022-11-23 16:12:35,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:12:35,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 16:12:35,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:12:35,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 16:12:35,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=259, Unknown=11, NotChecked=0, Total=306 [2022-11-23 16:12:35,369 INFO L87 Difference]: Start difference. First operand 379 states and 488 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:12:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:12:45,588 INFO L93 Difference]: Finished difference Result 451 states and 532 transitions. [2022-11-23 16:12:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 16:12:45,589 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-11-23 16:12:45,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:12:45,591 INFO L225 Difference]: With dead ends: 451 [2022-11-23 16:12:45,591 INFO L226 Difference]: Without dead ends: 451 [2022-11-23 16:12:45,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=630, Unknown=22, NotChecked=0, Total=756 [2022-11-23 16:12:45,593 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 465 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 44 mSolverCounterUnsat, 124 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 124 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:12:45,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1344 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2040 Invalid, 124 Unknown, 0 Unchecked, 8.7s Time] [2022-11-23 16:12:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-23 16:12:45,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 379. [2022-11-23 16:12:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.523972602739726) internal successors, (445), 356 states have internal predecessors, (445), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:12:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 487 transitions. [2022-11-23 16:12:45,621 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 487 transitions. Word has length 37 [2022-11-23 16:12:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:12:45,621 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 487 transitions. [2022-11-23 16:12:45,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:12:45,623 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 487 transitions. [2022-11-23 16:12:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 16:12:45,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:45,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:12:45,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:12:45,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:12:45,843 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting inspectErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:12:45,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:45,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1920024890, now seen corresponding path program 1 times [2022-11-23 16:12:45,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:12:45,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997721218] [2022-11-23 16:12:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:45,844 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 [2022-11-23 16:12:45,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:12:45,845 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:12:45,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (26)] Waiting until timeout for monitored process [2022-11-23 16:12:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:46,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 16:12:46,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:46,344 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 16:12:46,345 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 [2022-11-23 16:12:46,463 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 [2022-11-23 16:12:46,489 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 [2022-11-23 16:12:46,513 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 [2022-11-23 16:12:46,519 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 [2022-11-23 16:12:48,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:48,112 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-11-23 16:12:48,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:48,143 INFO L321 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-11-23 16:12:48,144 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 39 treesize of output 38 [2022-11-23 16:12:48,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:48,160 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 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-23 16:12:48,167 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 21 treesize of output 13 [2022-11-23 16:12:48,335 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 [2022-11-23 16:12:48,408 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:12:48,408 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 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-23 16:12:49,055 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 [2022-11-23 16:12:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:49,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:12:49,310 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:12:49,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997721218] [2022-11-23 16:12:49,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997721218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:12:49,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:12:49,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-23 16:12:49,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259504930] [2022-11-23 16:12:49,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:12:49,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 16:12:49,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:12:49,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 16:12:49,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=256, Unknown=13, NotChecked=0, Total=306 [2022-11-23 16:12:49,312 INFO L87 Difference]: Start difference. First operand 379 states and 487 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:13:03,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:13:03,222 INFO L93 Difference]: Finished difference Result 448 states and 529 transitions. [2022-11-23 16:13:03,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 16:13:03,223 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-11-23 16:13:03,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:13:03,224 INFO L225 Difference]: With dead ends: 448 [2022-11-23 16:13:03,224 INFO L226 Difference]: Without dead ends: 448 [2022-11-23 16:13:03,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=101, Invalid=577, Unknown=24, NotChecked=0, Total=702 [2022-11-23 16:13:03,225 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 408 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 2445 mSolverCounterSat, 40 mSolverCounterUnsat, 151 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 2636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2445 IncrementalHoareTripleChecker+Invalid, 151 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:13:03,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 1124 Invalid, 2636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2445 Invalid, 151 Unknown, 0 Unchecked, 12.3s Time] [2022-11-23 16:13:03,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-23 16:13:03,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 379. [2022-11-23 16:13:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5205479452054795) internal successors, (444), 356 states have internal predecessors, (444), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:13:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 486 transitions. [2022-11-23 16:13:03,238 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 486 transitions. Word has length 37 [2022-11-23 16:13:03,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:13:03,239 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 486 transitions. [2022-11-23 16:13:03,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:13:03,239 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 486 transitions. [2022-11-23 16:13:03,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 16:13:03,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:13:03,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:13:03,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (26)] Forceful destruction successful, exit code 0 [2022-11-23 16:13:03,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:13:03,457 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting inspectErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:13:03,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:13:03,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1920024891, now seen corresponding path program 1 times [2022-11-23 16:13:03,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:13:03,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203318780] [2022-11-23 16:13:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:13:03,459 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 [2022-11-23 16:13:03,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:13:03,460 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:13:03,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:13:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:13:03,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-23 16:13:03,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:13:03,883 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 [2022-11-23 16:13:03,918 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:13:03,919 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 [2022-11-23 16:13:04,011 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 [2022-11-23 16:13:04,023 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 [2022-11-23 16:13:04,056 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 [2022-11-23 16:13:04,078 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 7 treesize of output 3 [2022-11-23 16:13:06,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:06,678 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2022-11-23 16:13:06,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:06,755 INFO L321 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-11-23 16:13:06,755 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 100 treesize of output 91 [2022-11-23 16:13:06,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:06,765 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 0 case distinctions, treesize of input 78 treesize of output 72 [2022-11-23 16:13:06,804 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 16:13:06,805 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2022-11-23 16:13:06,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:06,813 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 48 treesize of output 39 [2022-11-23 16:13:06,841 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 16:13:06,842 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 35 [2022-11-23 16:13:07,026 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 [2022-11-23 16:13:07,039 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 [2022-11-23 16:13:07,112 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:13:07,112 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 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-23 16:13:07,124 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 22 treesize of output 24 [2022-11-23 16:13:08,120 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 [2022-11-23 16:13:08,129 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 [2022-11-23 16:13:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:13:08,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:13:08,424 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:13:08,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203318780] [2022-11-23 16:13:08,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203318780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:13:08,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:13:08,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-23 16:13:08,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652738954] [2022-11-23 16:13:08,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:13:08,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 16:13:08,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:13:08,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 16:13:08,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=256, Unknown=11, NotChecked=0, Total=306 [2022-11-23 16:13:08,427 INFO L87 Difference]: Start difference. First operand 379 states and 486 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:13:26,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:13:26,704 INFO L93 Difference]: Finished difference Result 447 states and 528 transitions. [2022-11-23 16:13:26,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 16:13:26,705 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-11-23 16:13:26,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:13:26,707 INFO L225 Difference]: With dead ends: 447 [2022-11-23 16:13:26,707 INFO L226 Difference]: Without dead ends: 447 [2022-11-23 16:13:26,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=107, Invalid=627, Unknown=22, NotChecked=0, Total=756 [2022-11-23 16:13:26,708 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 443 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 47 mSolverCounterUnsat, 112 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 112 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:13:26,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 1201 Invalid, 2546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2387 Invalid, 112 Unknown, 0 Unchecked, 16.2s Time] [2022-11-23 16:13:26,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-23 16:13:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 379. [2022-11-23 16:13:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5102739726027397) internal successors, (441), 356 states have internal predecessors, (441), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:13:26,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 483 transitions. [2022-11-23 16:13:26,720 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 483 transitions. Word has length 37 [2022-11-23 16:13:26,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:13:26,721 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 483 transitions. [2022-11-23 16:13:26,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:13:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 483 transitions. [2022-11-23 16:13:26,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-23 16:13:26,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:13:26,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:13:26,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:13:26,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:13:26,939 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:13:26,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:13:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash -912874368, now seen corresponding path program 1 times [2022-11-23 16:13:26,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:13:26,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710505671] [2022-11-23 16:13:26,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:13:26,940 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 [2022-11-23 16:13:26,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:13:26,941 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:13:26,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (28)] Waiting until timeout for monitored process [2022-11-23 16:13:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:13:27,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-23 16:13:27,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:13:27,349 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:13:27,349 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 [2022-11-23 16:13:27,450 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 [2022-11-23 16:13:27,464 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 [2022-11-23 16:13:27,492 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 [2022-11-23 16:13:27,497 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 [2022-11-23 16:13:31,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:31,027 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 157 [2022-11-23 16:13:31,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:31,113 INFO L321 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-11-23 16:13:31,114 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 184 treesize of output 167 [2022-11-23 16:13:31,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:31,123 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 0 case distinctions, treesize of input 154 treesize of output 140 [2022-11-23 16:13:31,153 INFO L321 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-11-23 16:13:31,153 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 1 case distinctions, treesize of input 134 treesize of output 52 [2022-11-23 16:13:31,391 INFO L321 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2022-11-23 16:13:31,391 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 55 treesize of output 48 [2022-11-23 16:13:31,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:31,402 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 [2022-11-23 16:13:31,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:31,592 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 20 treesize of output 22 [2022-11-23 16:13:31,621 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-23 16:13:31,621 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 45 treesize of output 42 [2022-11-23 16:13:32,529 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 11 [2022-11-23 16:13:33,026 INFO L321 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2022-11-23 16:13:33,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 20 [2022-11-23 16:13:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:13:33,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:13:33,252 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:13:33,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710505671] [2022-11-23 16:13:33,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710505671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:13:33,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:13:33,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 16:13:33,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154314984] [2022-11-23 16:13:33,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:13:33,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 16:13:33,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:13:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 16:13:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=293, Unknown=8, NotChecked=0, Total=342 [2022-11-23 16:13:33,255 INFO L87 Difference]: Start difference. First operand 379 states and 483 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:13:47,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:13:47,472 INFO L93 Difference]: Finished difference Result 446 states and 526 transitions. [2022-11-23 16:13:47,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 16:13:47,479 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-11-23 16:13:47,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:13:47,481 INFO L225 Difference]: With dead ends: 446 [2022-11-23 16:13:47,481 INFO L226 Difference]: Without dead ends: 446 [2022-11-23 16:13:47,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=119, Invalid=741, Unknown=10, NotChecked=0, Total=870 [2022-11-23 16:13:47,482 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 393 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 37 mSolverCounterUnsat, 36 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 36 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:13:47,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1443 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2220 Invalid, 36 Unknown, 0 Unchecked, 12.3s Time] [2022-11-23 16:13:47,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-23 16:13:47,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 379. [2022-11-23 16:13:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5068493150684932) internal successors, (440), 356 states have internal predecessors, (440), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:13:47,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 482 transitions. [2022-11-23 16:13:47,492 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 482 transitions. Word has length 40 [2022-11-23 16:13:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:13:47,493 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 482 transitions. [2022-11-23 16:13:47,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:13:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 482 transitions. [2022-11-23 16:13:47,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-23 16:13:47,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:13:47,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:13:47,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (28)] Forceful destruction successful, exit code 0 [2022-11-23 16:13:47,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:13:47,707 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:13:47,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:13:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash -8084452, now seen corresponding path program 1 times [2022-11-23 16:13:47,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:13:47,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441319743] [2022-11-23 16:13:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:13:47,708 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 [2022-11-23 16:13:47,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:13:47,709 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:13:47,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:13:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:13:48,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-23 16:13:48,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:13:48,139 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:13:48,140 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 [2022-11-23 16:13:48,223 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 [2022-11-23 16:13:48,252 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 [2022-11-23 16:13:48,267 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 [2022-11-23 16:13:48,276 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 [2022-11-23 16:13:51,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:51,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:51,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:13:51,483 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-23 16:13:51,483 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 210 treesize of output 94 [2022-11-23 16:13:51,521 INFO L321 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2022-11-23 16:13:51,522 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 63 [2022-11-23 16:13:51,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:51,540 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 34 [2022-11-23 16:13:51,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:51,553 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 0 case distinctions, treesize of input 29 treesize of output 37 [2022-11-23 16:13:51,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:51,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:51,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:13:51,831 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 16:13:51,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 60 [2022-11-23 16:13:51,846 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 18 treesize of output 20 [2022-11-23 16:13:52,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:52,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:13:52,131 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 16:13:52,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 52 [2022-11-23 16:13:52,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:13:52,142 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 20 treesize of output 22 [2022-11-23 16:13:53,326 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-23 16:13:54,018 INFO L321 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2022-11-23 16:13:54,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 48 treesize of output 28 [2022-11-23 16:13:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:13:54,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:13:54,208 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:13:54,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441319743] [2022-11-23 16:13:54,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441319743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:13:54,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:13:54,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 16:13:54,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608252691] [2022-11-23 16:13:54,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:13:54,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 16:13:54,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:13:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 16:13:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=300, Unknown=2, NotChecked=0, Total=342 [2022-11-23 16:13:54,210 INFO L87 Difference]: Start difference. First operand 379 states and 482 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:14:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:14:16,101 INFO L93 Difference]: Finished difference Result 445 states and 524 transitions. [2022-11-23 16:14:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 16:14:16,104 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-11-23 16:14:16,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:14:16,106 INFO L225 Difference]: With dead ends: 445 [2022-11-23 16:14:16,106 INFO L226 Difference]: Without dead ends: 445 [2022-11-23 16:14:16,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=118, Invalid=749, Unknown=3, NotChecked=0, Total=870 [2022-11-23 16:14:16,108 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 386 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 34 mSolverCounterUnsat, 45 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 45 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:14:16,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1528 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2293 Invalid, 45 Unknown, 0 Unchecked, 19.5s Time] [2022-11-23 16:14:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-11-23 16:14:16,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 379. [2022-11-23 16:14:16,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5034246575342465) internal successors, (439), 356 states have internal predecessors, (439), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:14:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 481 transitions. [2022-11-23 16:14:16,120 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 481 transitions. Word has length 43 [2022-11-23 16:14:16,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:14:16,121 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 481 transitions. [2022-11-23 16:14:16,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:14:16,121 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 481 transitions. [2022-11-23 16:14:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 16:14:16,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:14:16,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:14:16,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 16:14:16,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:14:16,339 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:14:16,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:14:16,339 INFO L85 PathProgramCache]: Analyzing trace with hash -610222928, now seen corresponding path program 1 times [2022-11-23 16:14:16,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:14:16,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906310456] [2022-11-23 16:14:16,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:14:16,340 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 [2022-11-23 16:14:16,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:14:16,341 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:14:16,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (30)] Waiting until timeout for monitored process [2022-11-23 16:14:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:14:16,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 16:14:16,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:14:16,607 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 [2022-11-23 16:14:16,739 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:14:16,740 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 [2022-11-23 16:14:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:14:16,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:14:16,775 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:14:16,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906310456] [2022-11-23 16:14:16,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906310456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:14:16,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:14:16,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:14:16,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255445588] [2022-11-23 16:14:16,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:14:16,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:14:16,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:14:16,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:14:16,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:14:16,777 INFO L87 Difference]: Start difference. First operand 379 states and 481 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:14:17,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:14:17,405 INFO L93 Difference]: Finished difference Result 378 states and 477 transitions. [2022-11-23 16:14:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:14:17,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-23 16:14:17,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:14:17,407 INFO L225 Difference]: With dead ends: 378 [2022-11-23 16:14:17,407 INFO L226 Difference]: Without dead ends: 378 [2022-11-23 16:14:17,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:14:17,408 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 288 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:14:17,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 288 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 16:14:17,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-23 16:14:17,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2022-11-23 16:14:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 292 states have (on average 1.4931506849315068) internal successors, (436), 355 states have internal predecessors, (436), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:14:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 477 transitions. [2022-11-23 16:14:17,419 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 477 transitions. Word has length 46 [2022-11-23 16:14:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:14:17,420 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 477 transitions. [2022-11-23 16:14:17,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:14:17,420 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 477 transitions. [2022-11-23 16:14:17,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 16:14:17,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:14:17,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:14:17,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (30)] Forceful destruction successful, exit code 0 [2022-11-23 16:14:17,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:14:17,635 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting inspectErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:14:17,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:14:17,635 INFO L85 PathProgramCache]: Analyzing trace with hash -610231965, now seen corresponding path program 1 times [2022-11-23 16:14:17,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:14:17,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276398609] [2022-11-23 16:14:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:14:17,636 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 [2022-11-23 16:14:17,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:14:17,637 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:14:17,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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)] Waiting until timeout for monitored process [2022-11-23 16:14:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:14:17,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:14:17,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:14:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:14:17,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:14:17,895 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:14:17,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276398609] [2022-11-23 16:14:17,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276398609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:14:17,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:14:17,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:14:17,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747324691] [2022-11-23 16:14:17,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:14:17,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:14:17,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:14:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:14:17,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:14:17,897 INFO L87 Difference]: Start difference. First operand 378 states and 477 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:14:18,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:14:18,498 INFO L93 Difference]: Finished difference Result 372 states and 459 transitions. [2022-11-23 16:14:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:14:18,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-23 16:14:18,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:14:18,501 INFO L225 Difference]: With dead ends: 372 [2022-11-23 16:14:18,501 INFO L226 Difference]: Without dead ends: 372 [2022-11-23 16:14:18,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:14:18,502 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 121 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:14:18,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 295 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 16:14:18,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-23 16:14:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2022-11-23 16:14:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 292 states have (on average 1.4315068493150684) internal successors, (418), 349 states have internal predecessors, (418), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:14:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 459 transitions. [2022-11-23 16:14:18,512 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 459 transitions. Word has length 46 [2022-11-23 16:14:18,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:14:18,513 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 459 transitions. [2022-11-23 16:14:18,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:14:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 459 transitions. [2022-11-23 16:14:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 16:14:18,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:14:18,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:14:18,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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)] Ended with exit code 0 [2022-11-23 16:14:18,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:14:18,729 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting inspectErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:14:18,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:14:18,729 INFO L85 PathProgramCache]: Analyzing trace with hash -610231964, now seen corresponding path program 1 times [2022-11-23 16:14:18,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:14:18,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337223601] [2022-11-23 16:14:18,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:14:18,730 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 [2022-11-23 16:14:18,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:14:18,731 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:14:18,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:14:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:14:19,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-23 16:14:19,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:14:19,169 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 [2022-11-23 16:14:19,204 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:14:19,204 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 [2022-11-23 16:14:19,309 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 [2022-11-23 16:14:19,321 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 [2022-11-23 16:14:19,366 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 [2022-11-23 16:14:19,383 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 [2022-11-23 16:14:22,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:14:22,026 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2022-11-23 16:14:22,071 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 16:14:22,072 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2022-11-23 16:14:22,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:14:22,082 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 31 treesize of output 26 [2022-11-23 16:14:22,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:14:22,092 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 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:14:22,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:14:22,124 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 31 treesize of output 26 [2022-11-23 16:14:22,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:14:22,138 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 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:14:22,385 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 [2022-11-23 16:14:22,418 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 [2022-11-23 16:14:22,464 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:14:22,465 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 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-23 16:14:22,482 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 22 treesize of output 24 [2022-11-23 16:14:23,312 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 [2022-11-23 16:14:23,318 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 [2022-11-23 16:14:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:14:23,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:14:23,905 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:14:23,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337223601] [2022-11-23 16:14:23,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337223601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:14:23,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:14:23,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-23 16:14:23,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578644434] [2022-11-23 16:14:23,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:14:23,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 16:14:23,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:14:23,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 16:14:23,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=290, Unknown=11, NotChecked=0, Total=342 [2022-11-23 16:14:23,907 INFO L87 Difference]: Start difference. First operand 372 states and 459 transitions. Second operand has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:14:39,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:14:39,572 INFO L93 Difference]: Finished difference Result 424 states and 493 transitions. [2022-11-23 16:14:39,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 16:14:39,573 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-23 16:14:39,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:14:39,575 INFO L225 Difference]: With dead ends: 424 [2022-11-23 16:14:39,575 INFO L226 Difference]: Without dead ends: 424 [2022-11-23 16:14:39,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=128, Invalid=778, Unknown=24, NotChecked=0, Total=930 [2022-11-23 16:14:39,576 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 378 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 39 mSolverCounterUnsat, 96 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 96 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:14:39,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1334 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2346 Invalid, 96 Unknown, 0 Unchecked, 13.3s Time] [2022-11-23 16:14:39,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-23 16:14:39,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 372. [2022-11-23 16:14:39,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 292 states have (on average 1.4075342465753424) internal successors, (411), 349 states have internal predecessors, (411), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:14:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 452 transitions. [2022-11-23 16:14:39,585 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 452 transitions. Word has length 46 [2022-11-23 16:14:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:14:39,585 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 452 transitions. [2022-11-23 16:14:39,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:14:39,585 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 452 transitions. [2022-11-23 16:14:39,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-23 16:14:39,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:14:39,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:14:39,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:14:39,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:14:39,799 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:14:39,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:14:39,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1176224425, now seen corresponding path program 1 times [2022-11-23 16:14:39,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:14:39,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273482188] [2022-11-23 16:14:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:14:39,800 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 [2022-11-23 16:14:39,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:14:39,801 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:14:39,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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)] Waiting until timeout for monitored process [2022-11-23 16:14:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:14:40,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-23 16:14:40,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:14:40,247 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:14:40,248 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 [2022-11-23 16:14:40,325 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 [2022-11-23 16:14:40,347 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 [2022-11-23 16:14:40,360 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 [2022-11-23 16:14:40,378 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 [2022-11-23 16:14:42,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:14:42,519 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 93 [2022-11-23 16:14:42,579 INFO L321 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2022-11-23 16:14:42,579 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 51 [2022-11-23 16:14:42,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:14:42,593 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 35 treesize of output 30 [2022-11-23 16:14:42,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:14:42,605 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 48 treesize of output 39 [2022-11-23 16:14:42,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:14:42,615 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 0 case distinctions, treesize of input 23 treesize of output 25 [2022-11-23 16:14:42,647 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 16:14:42,647 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 37 [2022-11-23 16:14:42,816 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 27 treesize of output 26 [2022-11-23 16:14:42,850 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 23 treesize of output 22 [2022-11-23 16:14:43,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:14:43,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:14:43,049 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:14:43,050 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 1 case distinctions, treesize of input 89 treesize of output 52 [2022-11-23 16:14:43,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2022-11-23 16:14:44,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:14:44,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:14:44,768 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 16:14:44,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 27 [2022-11-23 16:14:44,787 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 16:14:44,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 33 treesize of output 18 [2022-11-23 16:14:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:14:44,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:14:44,954 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:14:44,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273482188] [2022-11-23 16:14:44,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273482188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:14:44,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:14:44,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-23 16:14:44,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123170267] [2022-11-23 16:14:44,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:14:44,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 16:14:44,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:14:44,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 16:14:44,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=363, Unknown=11, NotChecked=0, Total=420 [2022-11-23 16:14:44,956 INFO L87 Difference]: Start difference. First operand 372 states and 452 transitions. Second operand has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:15:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:15:02,013 INFO L93 Difference]: Finished difference Result 422 states and 489 transitions. [2022-11-23 16:15:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 16:15:02,015 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-11-23 16:15:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:15:02,016 INFO L225 Difference]: With dead ends: 422 [2022-11-23 16:15:02,016 INFO L226 Difference]: Without dead ends: 422 [2022-11-23 16:15:02,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=146, Invalid=950, Unknown=26, NotChecked=0, Total=1122 [2022-11-23 16:15:02,016 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 369 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 29 mSolverCounterUnsat, 94 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 94 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:15:02,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1810 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2212 Invalid, 94 Unknown, 0 Unchecked, 14.3s Time] [2022-11-23 16:15:02,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-23 16:15:02,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 372. [2022-11-23 16:15:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 292 states have (on average 1.4006849315068493) internal successors, (409), 349 states have internal predecessors, (409), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:15:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 450 transitions. [2022-11-23 16:15:02,025 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 450 transitions. Word has length 49 [2022-11-23 16:15:02,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:15:02,025 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 450 transitions. [2022-11-23 16:15:02,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:15:02,025 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 450 transitions. [2022-11-23 16:15:02,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 16:15:02,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:15:02,026 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-11-23 16:15:02,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 16:15:02,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:15:02,240 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:15:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:15:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1567315803, now seen corresponding path program 1 times [2022-11-23 16:15:02,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:15:02,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671687698] [2022-11-23 16:15:02,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:15:02,242 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 [2022-11-23 16:15:02,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:15:02,243 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:15:02,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:15:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:15:02,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-23 16:15:02,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:15:02,924 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:15:02,925 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 [2022-11-23 16:15:03,005 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 [2022-11-23 16:15:03,016 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 [2022-11-23 16:15:03,041 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 [2022-11-23 16:15:03,047 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 [2022-11-23 16:15:04,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:04,128 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-11-23 16:15:04,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:04,159 INFO L321 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-11-23 16:15:04,159 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 39 treesize of output 38 [2022-11-23 16:15:04,166 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 19 treesize of output 11 [2022-11-23 16:15:04,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:04,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:15:04,284 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 23 treesize of output 23 [2022-11-23 16:15:04,346 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:15:04,346 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 1 case distinctions, treesize of input 32 treesize of output 31 [2022-11-23 16:15:04,540 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:15:04,542 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 [2022-11-23 16:15:04,694 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 28 treesize of output 26 [2022-11-23 16:15:04,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:04,712 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 8 [2022-11-23 16:15:05,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:06,003 INFO L321 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2022-11-23 16:15:06,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 126 [2022-11-23 16:15:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:06,027 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 0 case distinctions, treesize of input 111 treesize of output 91 [2022-11-23 16:15:06,079 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 12 treesize of output 11 [2022-11-23 16:15:06,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:06,686 INFO L321 Elim1Store]: treesize reduction 18, result has 50.0 percent of original size [2022-11-23 16:15:06,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 410 treesize of output 340 [2022-11-23 16:15:06,724 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 9 treesize of output 7 [2022-11-23 16:15:06,944 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 17 treesize of output 19 [2022-11-23 16:15:07,575 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-23 16:15:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:15:07,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:15:09,250 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:15:09,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671687698] [2022-11-23 16:15:09,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671687698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:15:09,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1099542608] [2022-11-23 16:15:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:15:09,251 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:15:09,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:15:09,253 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:15:09,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-23 16:15:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:15:10,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-23 16:15:10,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:15:10,780 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:15:10,780 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 [2022-11-23 16:15:11,016 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 [2022-11-23 16:15:11,031 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 [2022-11-23 16:15:11,051 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 [2022-11-23 16:15:11,057 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 [2022-11-23 16:15:13,105 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 11 treesize of output 7 [2022-11-23 16:15:13,800 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 77 treesize of output 57 [2022-11-23 16:15:13,836 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 16:15:13,837 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 48 [2022-11-23 16:15:13,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:13,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:13,851 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 35 treesize of output 30 [2022-11-23 16:15:13,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:13,861 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 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:15:14,111 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 [2022-11-23 16:15:14,124 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 [2022-11-23 16:15:14,169 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:15:14,169 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 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-23 16:15:14,183 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 20 treesize of output 22 [2022-11-23 16:15:14,527 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:15:14,528 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 [2022-11-23 16:15:14,781 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 15 treesize of output 17 [2022-11-23 16:15:14,791 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 [2022-11-23 16:15:14,803 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 8 treesize of output 4 [2022-11-23 16:15:14,809 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 [2022-11-23 16:15:16,702 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 40 treesize of output 28 [2022-11-23 16:15:16,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:16,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:16,750 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 16:15:16,751 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 1 case distinctions, treesize of input 27 treesize of output 30 [2022-11-23 16:15:16,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:16,759 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 [2022-11-23 16:15:16,999 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 [2022-11-23 16:15:17,025 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 [2022-11-23 16:15:17,855 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 [2022-11-23 16:15:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 16:15:18,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:15:19,029 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1903 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_~#gl_list~0.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1903) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))))) is different from false [2022-11-23 16:15:19,591 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1915 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1914 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1903 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1913 (_ BitVec 32))) (not (= (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_1915) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1914))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_1913))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1903) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|)) |c_~#gl_list~0.offset|))) is different from false [2022-11-23 16:15:19,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1099542608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:15:19,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563825467] [2022-11-23 16:15:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:15:19,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:15:19,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:15:19,597 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:15:19,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-23 16:15:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:15:19,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-23 16:15:19,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:15:19,969 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:15:19,969 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 [2022-11-23 16:15:20,024 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 [2022-11-23 16:15:20,047 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 [2022-11-23 16:15:20,070 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 [2022-11-23 16:15:20,093 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 [2022-11-23 16:15:20,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:20,633 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-11-23 16:15:20,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:20,643 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 35 treesize of output 30 [2022-11-23 16:15:20,651 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 11 [2022-11-23 16:15:20,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:20,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:15:20,682 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 23 treesize of output 23 [2022-11-23 16:15:20,752 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:15:20,752 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 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-23 16:15:20,957 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:15:20,957 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 [2022-11-23 16:15:21,018 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 28 treesize of output 26 [2022-11-23 16:15:21,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:21,048 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 8 [2022-11-23 16:15:22,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:22,287 INFO L321 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2022-11-23 16:15:22,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 126 [2022-11-23 16:15:22,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:15:22,318 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 0 case distinctions, treesize of input 111 treesize of output 91 [2022-11-23 16:15:22,348 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 12 treesize of output 11 [2022-11-23 16:15:22,473 INFO L321 Elim1Store]: treesize reduction 25, result has 35.9 percent of original size [2022-11-23 16:15:22,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 70 [2022-11-23 16:15:22,491 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 9 treesize of output 7 [2022-11-23 16:15:22,536 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 [2022-11-23 16:15:22,558 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 [2022-11-23 16:15:22,705 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-23 16:15:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:15:22,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:15:22,780 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2039 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2039) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|)) |c_~#gl_list~0.base|))) is different from false [2022-11-23 16:15:23,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563825467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:15:23,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:15:23,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 26] total 49 [2022-11-23 16:15:23,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432701835] [2022-11-23 16:15:23,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:15:23,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-23 16:15:23,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:15:23,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-23 16:15:23,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=3114, Unknown=242, NotChecked=354, Total=3906 [2022-11-23 16:15:23,550 INFO L87 Difference]: Start difference. First operand 372 states and 450 transitions. Second operand has 50 states, 50 states have (on average 1.84) internal successors, (92), 44 states have internal predecessors, (92), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 16:15:41,318 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse7 (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|)) (.cse6 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (let ((.cse0 (select .cse7 .cse6)) (.cse3 (select .cse7 |c_~#gl_list~0.offset|))) (and (let ((.cse2 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base|))) (or (and (= .cse0 |c_ULTIMATE.start_gl_insert_~node~1#1.base|) (exists ((v_DerPreprocessor_1 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_2 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_3 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store (store (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_1) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_DerPreprocessor_2) |c_~#gl_list~0.base| v_DerPreprocessor_3) .cse0 v_DerPreprocessor_1) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_DerPreprocessor_2) |c_~#gl_list~0.base| v_DerPreprocessor_3))) (and (= (select .cse1 |c_ULTIMATE.start_gl_insert_~node~1#1.base|) .cse2) (= (select .cse1 .cse0) v_DerPreprocessor_1) (= .cse3 (select v_DerPreprocessor_3 |c_~#gl_list~0.offset|)))))) (exists ((v_DerPreprocessor_1 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_2 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_3 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store (store (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_1) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_DerPreprocessor_2) |c_~#gl_list~0.base| v_DerPreprocessor_3) .cse0 v_DerPreprocessor_1) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_DerPreprocessor_2) |c_~#gl_list~0.base| v_DerPreprocessor_3))) (let ((.cse4 (select .cse5 .cse0))) (and (= (store .cse4 |c_~#gl_list~0.offset| .cse3) v_DerPreprocessor_3) (= .cse4 (select |c_#memory_$Pointer$.base| .cse0)) (= (select .cse5 |c_ULTIMATE.start_gl_insert_~node~1#1.base|) .cse2) (= .cse4 v_DerPreprocessor_1))))))) (not (= |c_ULTIMATE.start_gl_insert_~node~1#1.base| |c_~#gl_list~0.base|)) (= (bvadd (select |c_#valid| |c_~#gl_list~0.base|) (_ bv1 1)) (_ bv0 1)) (not (= (_ bv3 32) .cse0)) (= (_ bv3 32) |c_~#gl_list~0.base|) (= |c_~#gl_list~0.offset| (_ bv0 32)) (= .cse3 |c_ULTIMATE.start_gl_insert_~node~1#1.base|) (not (= (_ bv3 32) |c_ULTIMATE.start_gl_insert_~node~1#1.base|)) (= (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) .cse6))))) is different from true [2022-11-23 16:16:01,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:16:01,414 INFO L93 Difference]: Finished difference Result 491 states and 537 transitions. [2022-11-23 16:16:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-23 16:16:01,415 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.84) internal successors, (92), 44 states have internal predecessors, (92), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 52 [2022-11-23 16:16:01,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:16:01,417 INFO L225 Difference]: With dead ends: 491 [2022-11-23 16:16:01,417 INFO L226 Difference]: Without dead ends: 491 [2022-11-23 16:16:01,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 139 SyntacticMatches, 9 SemanticMatches, 89 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1551 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=610, Invalid=6515, Unknown=373, NotChecked=692, Total=8190 [2022-11-23 16:16:01,419 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 1212 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 5103 mSolverCounterSat, 157 mSolverCounterUnsat, 826 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 2515 SdHoareTripleChecker+Invalid, 6087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 5103 IncrementalHoareTripleChecker+Invalid, 826 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2022-11-23 16:16:01,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 2515 Invalid, 6087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [157 Valid, 5103 Invalid, 826 Unknown, 1 Unchecked, 26.4s Time] [2022-11-23 16:16:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-23 16:16:01,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 372. [2022-11-23 16:16:01,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 292 states have (on average 1.3972602739726028) internal successors, (408), 349 states have internal predecessors, (408), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:16:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 449 transitions. [2022-11-23 16:16:01,428 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 449 transitions. Word has length 52 [2022-11-23 16:16:01,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:16:01,428 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 449 transitions. [2022-11-23 16:16:01,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.84) internal successors, (92), 44 states have internal predecessors, (92), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 16:16:01,429 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 449 transitions. [2022-11-23 16:16:01,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 16:16:01,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:16:01,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:16:01,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-23 16:16:01,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:16:01,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2022-11-23 16:16:02,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 16:16:02,038 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:16:02,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:16:02,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1989130177, now seen corresponding path program 1 times [2022-11-23 16:16:02,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:16:02,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931292285] [2022-11-23 16:16:02,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:16:02,040 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 [2022-11-23 16:16:02,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:16:02,041 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:16:02,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (37)] Waiting until timeout for monitored process [2022-11-23 16:16:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:16:02,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-23 16:16:02,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:16:02,484 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:16:02,485 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 [2022-11-23 16:16:02,575 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 [2022-11-23 16:16:02,584 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 [2022-11-23 16:16:02,607 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 [2022-11-23 16:16:02,618 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 [2022-11-23 16:16:04,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:04,835 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 93 [2022-11-23 16:16:04,888 INFO L321 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2022-11-23 16:16:04,888 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 51 [2022-11-23 16:16:04,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:04,901 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 50 treesize of output 41 [2022-11-23 16:16:04,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:04,915 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 33 treesize of output 28 [2022-11-23 16:16:04,951 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 16:16:04,951 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 35 [2022-11-23 16:16:04,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:04,962 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 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:16:05,193 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 [2022-11-23 16:16:05,211 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 18 treesize of output 20 [2022-11-23 16:16:05,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:05,242 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 63 treesize of output 35 [2022-11-23 16:16:05,254 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 33 treesize of output 26 [2022-11-23 16:16:07,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:16:07,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:07,213 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 16:16:07,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 27 [2022-11-23 16:16:07,231 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 16:16:07,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 33 treesize of output 18 [2022-11-23 16:16:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:16:07,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:16:07,405 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:16:07,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931292285] [2022-11-23 16:16:07,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931292285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:16:07,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:16:07,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-23 16:16:07,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523104962] [2022-11-23 16:16:07,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:16:07,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 16:16:07,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:16:07,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 16:16:07,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=324, Unknown=14, NotChecked=0, Total=380 [2022-11-23 16:16:07,407 INFO L87 Difference]: Start difference. First operand 372 states and 449 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:16:25,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:16:25,103 INFO L93 Difference]: Finished difference Result 421 states and 486 transitions. [2022-11-23 16:16:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 16:16:25,104 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-11-23 16:16:25,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:16:25,106 INFO L225 Difference]: With dead ends: 421 [2022-11-23 16:16:25,106 INFO L226 Difference]: Without dead ends: 421 [2022-11-23 16:16:25,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=146, Invalid=949, Unknown=27, NotChecked=0, Total=1122 [2022-11-23 16:16:25,107 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 409 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 33 mSolverCounterUnsat, 105 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 105 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:16:25,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1706 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2208 Invalid, 105 Unknown, 0 Unchecked, 14.6s Time] [2022-11-23 16:16:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-11-23 16:16:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 372. [2022-11-23 16:16:25,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 292 states have (on average 1.393835616438356) internal successors, (407), 349 states have internal predecessors, (407), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:16:25,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 448 transitions. [2022-11-23 16:16:25,116 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 448 transitions. Word has length 52 [2022-11-23 16:16:25,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:16:25,116 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 448 transitions. [2022-11-23 16:16:25,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:16:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 448 transitions. [2022-11-23 16:16:25,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 16:16:25,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:16:25,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:16:25,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (37)] Forceful destruction successful, exit code 0 [2022-11-23 16:16:25,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:16:25,333 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:16:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:16:25,333 INFO L85 PathProgramCache]: Analyzing trace with hash -749843176, now seen corresponding path program 1 times [2022-11-23 16:16:25,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:16:25,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628847639] [2022-11-23 16:16:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:16:25,334 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 [2022-11-23 16:16:25,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:16:25,335 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:16:25,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:16:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:16:25,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 16:16:25,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:16:25,754 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 33 treesize of output 21 [2022-11-23 16:16:25,855 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 21 treesize of output 9 [2022-11-23 16:16:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:16:25,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:16:25,898 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:16:25,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628847639] [2022-11-23 16:16:25,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628847639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:16:25,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:16:25,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 16:16:25,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934999360] [2022-11-23 16:16:25,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:16:25,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 16:16:25,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:16:25,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 16:16:25,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:16:25,900 INFO L87 Difference]: Start difference. First operand 372 states and 448 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:16:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:16:27,593 INFO L93 Difference]: Finished difference Result 371 states and 444 transitions. [2022-11-23 16:16:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 16:16:27,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-11-23 16:16:27,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:16:27,595 INFO L225 Difference]: With dead ends: 371 [2022-11-23 16:16:27,595 INFO L226 Difference]: Without dead ends: 371 [2022-11-23 16:16:27,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:16:27,596 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 155 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 16:16:27,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 846 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 16:16:27,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-11-23 16:16:27,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2022-11-23 16:16:27,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 292 states have (on average 1.3835616438356164) internal successors, (404), 348 states have internal predecessors, (404), 26 states have call successors, (26), 10 states have call predecessors, (26), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:16:27,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 444 transitions. [2022-11-23 16:16:27,604 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 444 transitions. Word has length 55 [2022-11-23 16:16:27,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:16:27,605 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 444 transitions. [2022-11-23 16:16:27,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:16:27,605 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 444 transitions. [2022-11-23 16:16:27,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 16:16:27,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:16:27,606 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:16:27,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:16:27,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:16:27,819 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:16:27,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:16:27,820 INFO L85 PathProgramCache]: Analyzing trace with hash 362585137, now seen corresponding path program 1 times [2022-11-23 16:16:27,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:16:27,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445535461] [2022-11-23 16:16:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:16:27,821 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 [2022-11-23 16:16:27,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:16:27,822 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:16:27,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (39)] Waiting until timeout for monitored process [2022-11-23 16:16:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:16:28,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-23 16:16:28,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:16:28,465 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-23 16:16:28,465 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 26 treesize of output 43 [2022-11-23 16:16:28,615 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 [2022-11-23 16:16:28,635 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 [2022-11-23 16:16:28,706 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 [2022-11-23 16:16:28,712 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 [2022-11-23 16:16:30,201 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 11 treesize of output 7 [2022-11-23 16:16:30,640 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 77 treesize of output 57 [2022-11-23 16:16:30,672 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 16:16:30,672 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 48 [2022-11-23 16:16:30,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:30,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:30,682 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 39 treesize of output 32 [2022-11-23 16:16:30,707 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 16:16:30,707 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 26 [2022-11-23 16:16:30,932 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 [2022-11-23 16:16:30,956 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 [2022-11-23 16:16:31,002 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:16:31,003 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 1 case distinctions, treesize of input 48 treesize of output 45 [2022-11-23 16:16:31,009 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 20 treesize of output 22 [2022-11-23 16:16:31,298 INFO L321 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2022-11-23 16:16:31,298 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 31 treesize of output 35 [2022-11-23 16:16:31,509 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 31 treesize of output 29 [2022-11-23 16:16:31,529 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 16 treesize of output 18 [2022-11-23 16:16:31,553 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 [2022-11-23 16:16:31,562 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 17 treesize of output 9 [2022-11-23 16:16:32,910 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 56 treesize of output 36 [2022-11-23 16:16:32,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:32,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:32,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-23 16:16:32,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:32,933 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 [2022-11-23 16:16:33,080 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 [2022-11-23 16:16:33,102 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 [2022-11-23 16:16:33,598 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 [2022-11-23 16:16:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:16:33,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:16:34,520 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2306 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2306) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))))) is different from false [2022-11-23 16:16:35,341 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:16:35,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445535461] [2022-11-23 16:16:35,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445535461] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:16:35,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [802320199] [2022-11-23 16:16:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:16:35,342 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:16:35,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:16:35,343 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:16:35,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2022-11-23 16:16:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:16:36,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-23 16:16:36,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:16:36,994 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:16:36,995 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 [2022-11-23 16:16:37,200 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 [2022-11-23 16:16:37,210 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 [2022-11-23 16:16:37,243 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 [2022-11-23 16:16:37,249 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 [2022-11-23 16:16:39,475 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 11 treesize of output 7 [2022-11-23 16:16:40,061 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 77 treesize of output 57 [2022-11-23 16:16:40,092 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 16:16:40,092 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 48 [2022-11-23 16:16:40,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:40,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:40,103 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 35 treesize of output 30 [2022-11-23 16:16:40,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:40,111 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 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:16:40,289 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 [2022-11-23 16:16:40,310 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 [2022-11-23 16:16:40,350 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:16:40,350 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 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-23 16:16:40,357 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 20 treesize of output 22 [2022-11-23 16:16:40,659 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:16:40,659 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 [2022-11-23 16:16:40,899 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 15 treesize of output 17 [2022-11-23 16:16:40,912 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 [2022-11-23 16:16:40,946 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 [2022-11-23 16:16:40,951 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 8 treesize of output 4 [2022-11-23 16:16:41,920 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 40 treesize of output 28 [2022-11-23 16:16:41,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:41,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:41,973 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 16:16:41,973 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 1 case distinctions, treesize of input 27 treesize of output 30 [2022-11-23 16:16:41,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:41,980 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 [2022-11-23 16:16:42,182 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 [2022-11-23 16:16:42,197 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 [2022-11-23 16:16:42,389 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 [2022-11-23 16:16:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 16:16:42,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:16:42,485 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2448 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2448) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|)) (_ bv0 32)))) is different from false [2022-11-23 16:16:43,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [802320199] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:16:43,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451046327] [2022-11-23 16:16:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:16:43,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:16:43,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:16:43,276 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:16:43,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-23 16:16:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:16:43,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-23 16:16:43,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:16:43,667 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:16:43,667 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 [2022-11-23 16:16:43,732 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 [2022-11-23 16:16:43,742 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 [2022-11-23 16:16:43,765 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 [2022-11-23 16:16:43,777 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 [2022-11-23 16:16:45,014 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 11 treesize of output 7 [2022-11-23 16:16:45,498 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 77 treesize of output 57 [2022-11-23 16:16:45,533 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 16:16:45,533 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 48 [2022-11-23 16:16:45,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:45,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:45,545 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 39 treesize of output 32 [2022-11-23 16:16:45,576 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 16:16:45,577 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 26 [2022-11-23 16:16:45,604 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 [2022-11-23 16:16:45,632 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 [2022-11-23 16:16:45,679 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:16:45,679 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 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-23 16:16:45,692 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 20 treesize of output 22 [2022-11-23 16:16:45,821 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:16:45,821 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 [2022-11-23 16:16:45,879 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 15 treesize of output 17 [2022-11-23 16:16:45,891 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 [2022-11-23 16:16:45,920 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 [2022-11-23 16:16:45,938 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 8 treesize of output 4 [2022-11-23 16:16:47,106 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 40 treesize of output 28 [2022-11-23 16:16:47,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:47,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:47,156 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 16:16:47,156 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 1 case distinctions, treesize of input 27 treesize of output 30 [2022-11-23 16:16:47,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:16:47,163 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 [2022-11-23 16:16:47,190 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 [2022-11-23 16:16:47,219 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 16 treesize of output 18 [2022-11-23 16:16:47,453 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 [2022-11-23 16:16:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 16:16:47,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:16:47,578 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2588 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2588) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|)) (_ bv0 32)))) is different from false [2022-11-23 16:16:48,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451046327] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:16:48,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:16:48,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 42 [2022-11-23 16:16:48,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746911020] [2022-11-23 16:16:48,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:16:48,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-23 16:16:48,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:16:48,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-23 16:16:48,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=2133, Unknown=143, NotChecked=294, Total=2756 [2022-11-23 16:16:48,463 INFO L87 Difference]: Start difference. First operand 371 states and 444 transitions. Second operand has 43 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 39 states have internal predecessors, (82), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 16:17:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:17:14,544 INFO L93 Difference]: Finished difference Result 558 states and 606 transitions. [2022-11-23 16:17:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-23 16:17:14,545 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 39 states have internal predecessors, (82), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 56 [2022-11-23 16:17:14,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:17:14,548 INFO L225 Difference]: With dead ends: 558 [2022-11-23 16:17:14,548 INFO L226 Difference]: Without dead ends: 558 [2022-11-23 16:17:14,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 168 SyntacticMatches, 12 SemanticMatches, 76 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1554 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=507, Invalid=4820, Unknown=235, NotChecked=444, Total=6006 [2022-11-23 16:17:14,550 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 1336 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 4227 mSolverCounterSat, 171 mSolverCounterUnsat, 323 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 4721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 4227 IncrementalHoareTripleChecker+Invalid, 323 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:17:14,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 2000 Invalid, 4721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 4227 Invalid, 323 Unknown, 0 Unchecked, 16.8s Time] [2022-11-23 16:17:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-11-23 16:17:14,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 371. [2022-11-23 16:17:14,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 292 states have (on average 1.38013698630137) internal successors, (403), 348 states have internal predecessors, (403), 26 states have call successors, (26), 10 states have call predecessors, (26), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:17:14,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 443 transitions. [2022-11-23 16:17:14,560 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 443 transitions. Word has length 56 [2022-11-23 16:17:14,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:17:14,561 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 443 transitions. [2022-11-23 16:17:14,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 39 states have internal predecessors, (82), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 16:17:14,561 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 443 transitions. [2022-11-23 16:17:14,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 16:17:14,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:17:14,562 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:17:14,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-23 16:17:14,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2022-11-23 16:17:14,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (39)] Forceful destruction successful, exit code 0 [2022-11-23 16:17:15,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:17:15,179 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting inspectErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:17:15,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:17:15,179 INFO L85 PathProgramCache]: Analyzing trace with hash 362574494, now seen corresponding path program 1 times [2022-11-23 16:17:15,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:17:15,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673677019] [2022-11-23 16:17:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:17:15,180 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 [2022-11-23 16:17:15,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:17:15,181 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:17:15,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:17:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:17:15,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-23 16:17:15,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:17:15,797 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:17:15,797 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 [2022-11-23 16:17:15,857 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 [2022-11-23 16:17:15,877 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 [2022-11-23 16:17:15,888 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 7 treesize of output 3 [2022-11-23 16:17:15,901 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 [2022-11-23 16:17:16,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:16,986 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-11-23 16:17:16,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:16,995 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 35 treesize of output 30 [2022-11-23 16:17:17,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:17,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-23 16:17:17,011 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 21 treesize of output 13 [2022-11-23 16:17:17,151 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 23 treesize of output 23 [2022-11-23 16:17:17,206 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:17:17,206 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 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-23 16:17:17,399 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:17:17,399 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 [2022-11-23 16:17:17,545 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 28 [2022-11-23 16:17:17,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:17,575 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 24 treesize of output 8 [2022-11-23 16:17:18,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:18,944 INFO L321 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2022-11-23 16:17:18,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 137 [2022-11-23 16:17:18,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:18,962 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 0 case distinctions, treesize of input 122 treesize of output 98 [2022-11-23 16:17:19,022 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 12 treesize of output 11 [2022-11-23 16:17:19,093 INFO L321 Elim1Store]: treesize reduction 25, result has 35.9 percent of original size [2022-11-23 16:17:19,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 70 [2022-11-23 16:17:19,107 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 16:17:19,253 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 30 [2022-11-23 16:17:19,282 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 30 [2022-11-23 16:17:19,901 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 [2022-11-23 16:17:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:17:20,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:17:20,930 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2723 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2723) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-23 16:17:21,498 INFO L321 Elim1Store]: treesize reduction 7, result has 86.3 percent of original size [2022-11-23 16:17:21,498 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 57 treesize of output 56 [2022-11-23 16:17:21,917 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:17:21,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673677019] [2022-11-23 16:17:21,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673677019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:17:21,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [253485242] [2022-11-23 16:17:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:17:21,917 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:17:21,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:17:21,918 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:17:21,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2022-11-23 16:17:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:17:23,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-23 16:17:23,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:17:23,803 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-23 16:17:23,803 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 26 treesize of output 43 [2022-11-23 16:17:24,090 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 [2022-11-23 16:17:24,121 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 [2022-11-23 16:17:24,158 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 [2022-11-23 16:17:24,164 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 [2022-11-23 16:17:27,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:27,209 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-11-23 16:17:27,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:27,220 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 35 treesize of output 30 [2022-11-23 16:17:27,228 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 11 [2022-11-23 16:17:27,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:27,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:17:27,548 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 23 treesize of output 23 [2022-11-23 16:17:27,610 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:17:27,610 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 1 case distinctions, treesize of input 51 treesize of output 46 [2022-11-23 16:17:28,086 INFO L321 Elim1Store]: treesize reduction 78, result has 35.0 percent of original size [2022-11-23 16:17:28,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 67 [2022-11-23 16:17:28,459 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 55 treesize of output 47 [2022-11-23 16:17:28,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:28,546 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 49 treesize of output 23 [2022-11-23 16:17:31,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:31,916 INFO L321 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2022-11-23 16:17:31,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 139 [2022-11-23 16:17:31,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:31,931 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 0 case distinctions, treesize of input 129 treesize of output 105 [2022-11-23 16:17:32,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:32,581 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2022-11-23 16:17:32,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 269 treesize of output 211 [2022-11-23 16:17:32,957 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 50 treesize of output 46 [2022-11-23 16:17:34,773 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 43 treesize of output 23 [2022-11-23 16:17:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:17:35,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:17:38,535 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2871 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2872 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2861 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2870 (_ BitVec 32))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_2872) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2871))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_2870))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2861) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (_ bv1 1)))) is different from false [2022-11-23 16:17:38,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [253485242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:17:38,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296646056] [2022-11-23 16:17:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:17:38,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:17:38,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:17:38,541 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:17:38,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-23 16:17:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:17:38,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-23 16:17:38,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:17:38,978 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:17:38,978 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 [2022-11-23 16:17:39,022 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 [2022-11-23 16:17:39,033 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 [2022-11-23 16:17:39,066 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 [2022-11-23 16:17:39,081 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 [2022-11-23 16:17:39,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:39,704 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-11-23 16:17:39,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:39,712 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 35 treesize of output 30 [2022-11-23 16:17:39,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:39,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-23 16:17:39,725 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 21 treesize of output 13 [2022-11-23 16:17:39,758 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-23 16:17:39,836 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:17:39,836 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 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-23 16:17:39,927 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:17:39,927 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 [2022-11-23 16:17:39,979 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 28 [2022-11-23 16:17:40,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:40,011 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 24 treesize of output 8 [2022-11-23 16:17:40,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:41,031 INFO L321 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2022-11-23 16:17:41,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 137 [2022-11-23 16:17:41,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:41,048 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 0 case distinctions, treesize of input 122 treesize of output 98 [2022-11-23 16:17:41,096 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 12 treesize of output 11 [2022-11-23 16:17:41,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:17:41,829 INFO L321 Elim1Store]: treesize reduction 18, result has 50.0 percent of original size [2022-11-23 16:17:41,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 631 treesize of output 467 [2022-11-23 16:17:41,928 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 30 [2022-11-23 16:17:42,268 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 [2022-11-23 16:17:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:17:42,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:17:45,389 INFO L321 Elim1Store]: treesize reduction 7, result has 86.3 percent of original size [2022-11-23 16:17:45,389 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 57 treesize of output 56 [2022-11-23 16:17:45,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296646056] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:17:45,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:17:45,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 27] total 55 [2022-11-23 16:17:45,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621831445] [2022-11-23 16:17:45,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:17:45,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-23 16:17:45,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:17:45,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-23 16:17:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3704, Unknown=99, NotChecked=250, Total=4290 [2022-11-23 16:17:45,716 INFO L87 Difference]: Start difference. First operand 371 states and 443 transitions. Second operand has 57 states, 56 states have (on average 1.8928571428571428) internal successors, (106), 48 states have internal predecessors, (106), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 16:18:45,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:18:45,311 INFO L93 Difference]: Finished difference Result 536 states and 585 transitions. [2022-11-23 16:18:45,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-23 16:18:45,311 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.8928571428571428) internal successors, (106), 48 states have internal predecessors, (106), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 56 [2022-11-23 16:18:45,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:18:45,314 INFO L225 Difference]: With dead ends: 536 [2022-11-23 16:18:45,314 INFO L226 Difference]: Without dead ends: 536 [2022-11-23 16:18:45,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 158 SyntacticMatches, 11 SemanticMatches, 93 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=646, Invalid=7738, Unknown=180, NotChecked=366, Total=8930 [2022-11-23 16:18:45,316 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 1333 mSDsluCounter, 3217 mSDsCounter, 0 mSdLazyCounter, 9534 mSolverCounterSat, 175 mSolverCounterUnsat, 509 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 3344 SdHoareTripleChecker+Invalid, 10218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 9534 IncrementalHoareTripleChecker+Invalid, 509 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:18:45,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1341 Valid, 3344 Invalid, 10218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [175 Valid, 9534 Invalid, 509 Unknown, 0 Unchecked, 42.3s Time] [2022-11-23 16:18:45,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-23 16:18:45,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 371. [2022-11-23 16:18:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 292 states have (on average 1.3767123287671232) internal successors, (402), 348 states have internal predecessors, (402), 26 states have call successors, (26), 10 states have call predecessors, (26), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 16:18:45,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 442 transitions. [2022-11-23 16:18:45,325 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 442 transitions. Word has length 56 [2022-11-23 16:18:45,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:18:45,325 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 442 transitions. [2022-11-23 16:18:45,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.8928571428571428) internal successors, (106), 48 states have internal predecessors, (106), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 16:18:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 442 transitions. [2022-11-23 16:18:45,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 16:18:45,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:18:45,326 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:18:45,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-11-23 16:18:45,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 16:18:45,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2022-11-23 16:18:45,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 16:18:45,935 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting inspectErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:18:45,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:18:45,935 INFO L85 PathProgramCache]: Analyzing trace with hash 362574495, now seen corresponding path program 1 times [2022-11-23 16:18:45,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:18:45,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637110552] [2022-11-23 16:18:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:18:45,936 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 [2022-11-23 16:18:45,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:18:45,937 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:18:45,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (45)] Waiting until timeout for monitored process [2022-11-23 16:18:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:18:46,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-23 16:18:46,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:18:46,587 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-23 16:18:46,587 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 26 treesize of output 43 [2022-11-23 16:18:46,624 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 [2022-11-23 16:18:46,754 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 [2022-11-23 16:18:46,782 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 [2022-11-23 16:18:46,836 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 [2022-11-23 16:18:46,857 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 [2022-11-23 16:18:50,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:18:50,136 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2022-11-23 16:18:50,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:18:50,198 INFO L321 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-11-23 16:18:50,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 91 [2022-11-23 16:18:50,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:18:50,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2022-11-23 16:18:50,241 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 16:18:50,241 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2022-11-23 16:18:50,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:18:50,252 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 31 treesize of output 26 [2022-11-23 16:18:50,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:18:50,262 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 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:18:50,512 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 [2022-11-23 16:18:50,538 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 23 treesize of output 23 [2022-11-23 16:18:50,610 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:18:50,611 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 1 case distinctions, treesize of input 82 treesize of output 73 [2022-11-23 16:18:50,636 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 22 treesize of output 24 [2022-11-23 16:18:51,107 INFO L321 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2022-11-23 16:18:51,108 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 33 treesize of output 37 [2022-11-23 16:18:51,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2022-11-23 16:18:51,430 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 61 treesize of output 53 [2022-11-23 16:18:51,483 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 16 treesize of output 18 [2022-11-23 16:18:51,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:18:51,512 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 45 treesize of output 17 [2022-11-23 16:18:51,536 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 [2022-11-23 16:18:53,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:18:53,928 INFO L321 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2022-11-23 16:18:53,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 172 [2022-11-23 16:18:53,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:18:53,939 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 0 case distinctions, treesize of input 162 treesize of output 126 [2022-11-23 16:18:53,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:18:53,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:18:53,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-23 16:18:54,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:18:54,061 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 [2022-11-23 16:18:54,406 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 [2022-11-23 16:18:54,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:18:54,447 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2022-11-23 16:18:54,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 267 treesize of output 209 [2022-11-23 16:18:54,472 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 107 [2022-11-23 16:18:54,503 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 9 treesize of output 7 [2022-11-23 16:18:54,741 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 48 treesize of output 44 [2022-11-23 16:18:54,749 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 16 treesize of output 18 [2022-11-23 16:18:55,694 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 [2022-11-23 16:18:55,701 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 33 treesize of output 17 [2022-11-23 16:18:56,105 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:18:56,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:18:57,866 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (and (forall ((v_ArrVal_3150 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3149 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3149) |c_~#gl_list~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3150) |c_~#gl_list~0.base|) .cse0)))) (forall ((v_ArrVal_3149 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3149) |c_~#gl_list~0.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))))) is different from false [2022-11-23 16:18:58,906 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse2 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (and (forall ((v_ArrVal_3170 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3150 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3149 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3167 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3171 (_ BitVec 32)) (v_ArrVal_3172 (_ BitVec 32)) (v_ArrVal_3169 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3168 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_3168) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3169))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3172))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3149) |c_~#gl_list~0.base|) .cse2)) (select |c_#length| (select (select (store (let ((.cse3 (store (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_3170) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3167))) (store .cse3 |c_~#gl_list~0.base| (store (select .cse3 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3171))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3150) |c_~#gl_list~0.base|) .cse2)))) (forall ((v_ArrVal_3149 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3172 (_ BitVec 32)) (v_ArrVal_3169 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3168 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_3168) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3169))) (store .cse5 |c_~#gl_list~0.base| (store (select .cse5 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3172))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3149) |c_~#gl_list~0.base|) .cse2))) (bvule .cse4 (bvadd (_ bv4 32) .cse4)))))) is different from false [2022-11-23 16:18:58,913 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:18:58,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637110552] [2022-11-23 16:18:58,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637110552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:18:58,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1414378507] [2022-11-23 16:18:58,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:18:58,914 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:18:58,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:18:58,915 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:18:58,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2022-11-23 16:19:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:19:01,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-23 16:19:01,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:19:01,345 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 [2022-11-23 16:19:01,391 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 16:19:01,391 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 [2022-11-23 16:19:01,711 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 [2022-11-23 16:19:01,722 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 [2022-11-23 16:19:01,771 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 [2022-11-23 16:19:01,792 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 [2022-11-23 16:19:07,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:07,364 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2022-11-23 16:19:07,407 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 16:19:07,407 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2022-11-23 16:19:07,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:07,418 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 48 treesize of output 39 [2022-11-23 16:19:07,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:07,429 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 33 treesize of output 28 [2022-11-23 16:19:07,454 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 16:19:07,454 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 33 [2022-11-23 16:19:07,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:07,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:19:07,848 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 [2022-11-23 16:19:07,878 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 23 treesize of output 23 [2022-11-23 16:19:07,924 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:19:07,925 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 1 case distinctions, treesize of input 62 treesize of output 55 [2022-11-23 16:19:07,940 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 20 treesize of output 22 [2022-11-23 16:19:08,361 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-23 16:19:08,361 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 26 [2022-11-23 16:19:08,423 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-23 16:19:08,423 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 [2022-11-23 16:19:08,751 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 [2022-11-23 16:19:08,760 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 45 treesize of output 39 [2022-11-23 16:19:08,787 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 [2022-11-23 16:19:08,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:08,804 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 31 treesize of output 13 [2022-11-23 16:19:12,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:12,384 INFO L321 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2022-11-23 16:19:12,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 128 treesize of output 158 [2022-11-23 16:19:12,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:12,395 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 0 case distinctions, treesize of input 148 treesize of output 122 [2022-11-23 16:19:12,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:12,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:12,412 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 33 treesize of output 32 [2022-11-23 16:19:12,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:12,419 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 [2022-11-23 16:19:12,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:13,022 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2022-11-23 16:19:13,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 257 treesize of output 201 [2022-11-23 16:19:13,053 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 107 [2022-11-23 16:19:13,087 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 9 treesize of output 7 [2022-11-23 16:19:13,095 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 16:19:13,108 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 [2022-11-23 16:19:13,420 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 [2022-11-23 16:19:13,429 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 [2022-11-23 16:19:14,691 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 [2022-11-23 16:19:14,699 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 [2022-11-23 16:19:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:19:15,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:19:15,731 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (and (forall ((v_ArrVal_3316 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3316) |c_~#gl_list~0.base|) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_3317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3316 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3316) |c_~#gl_list~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3317) |c_~#gl_list~0.base|) .cse1)))))) is different from false [2022-11-23 16:19:17,239 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse2 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (and (forall ((v_ArrVal_3339 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3316 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3337 (_ BitVec 32)) (v_ArrVal_3336 (_ BitVec 32)) (v_ArrVal_3340 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_3335) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3339))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3336))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3316) |c_~#gl_list~0.base|) .cse2)) (select |c_#length| (select (select (store (let ((.cse3 (store (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_3340) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3338))) (store .cse3 |c_~#gl_list~0.base| (store (select .cse3 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3337))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3317) |c_~#gl_list~0.base|) .cse2)))) (forall ((v_ArrVal_3339 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3316 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3336 (_ BitVec 32))) (let ((.cse4 (select (select (store (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_3335) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3339))) (store .cse5 |c_~#gl_list~0.base| (store (select .cse5 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3336))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3316) |c_~#gl_list~0.base|) .cse2))) (bvule .cse4 (bvadd (_ bv4 32) .cse4)))))) is different from false [2022-11-23 16:19:17,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1414378507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:19:17,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431259403] [2022-11-23 16:19:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:19:17,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:19:17,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:19:17,248 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:19:17,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-23 16:19:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:19:17,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-23 16:19:17,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:19:17,693 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:19:17,694 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 [2022-11-23 16:19:18,028 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 [2022-11-23 16:19:18,043 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 [2022-11-23 16:19:18,064 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 [2022-11-23 16:19:18,081 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 [2022-11-23 16:19:25,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:25,228 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2022-11-23 16:19:25,273 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 16:19:25,273 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2022-11-23 16:19:25,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:25,282 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 31 treesize of output 26 [2022-11-23 16:19:25,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:25,288 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 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:19:25,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:25,305 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 31 treesize of output 26 [2022-11-23 16:19:25,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:25,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:19:25,705 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 23 treesize of output 23 [2022-11-23 16:19:25,719 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 23 treesize of output 23 [2022-11-23 16:19:25,758 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:19:25,759 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 1 case distinctions, treesize of input 42 treesize of output 39 [2022-11-23 16:19:25,769 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 27 treesize of output 27 [2022-11-23 16:19:26,282 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:19:26,283 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 [2022-11-23 16:19:26,704 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 23 treesize of output 23 [2022-11-23 16:19:26,721 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 28 treesize of output 26 [2022-11-23 16:19:26,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:26,751 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 8 [2022-11-23 16:19:26,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:26,768 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 17 treesize of output 7 [2022-11-23 16:19:30,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:30,891 INFO L321 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2022-11-23 16:19:30,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 126 treesize of output 166 [2022-11-23 16:19:30,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:30,909 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 0 case distinctions, treesize of input 151 treesize of output 125 [2022-11-23 16:19:30,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:30,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:30,989 INFO L321 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2022-11-23 16:19:30,990 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 1 case distinctions, treesize of input 57 treesize of output 62 [2022-11-23 16:19:31,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:31,003 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 0 case distinctions, treesize of input 36 treesize of output 36 [2022-11-23 16:19:31,055 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 12 treesize of output 11 [2022-11-23 16:19:31,127 INFO L321 Elim1Store]: treesize reduction 25, result has 35.9 percent of original size [2022-11-23 16:19:31,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 62 [2022-11-23 16:19:31,141 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 9 treesize of output 7 [2022-11-23 16:19:31,603 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 [2022-11-23 16:19:31,624 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 28 treesize of output 28 [2022-11-23 16:19:31,647 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 28 treesize of output 28 [2022-11-23 16:19:31,664 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 [2022-11-23 16:19:33,095 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 [2022-11-23 16:19:33,101 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 [2022-11-23 16:19:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 16:19:33,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:19:34,281 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (and (forall ((v_ArrVal_3480 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3480) |c_~#gl_list~0.base|) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_3480 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3480) |c_~#gl_list~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3479) |c_~#gl_list~0.base|) .cse1)))))) is different from false [2022-11-23 16:19:35,693 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:19:35,693 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 178 treesize of output 182 [2022-11-23 16:19:35,811 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse2 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (and (or (forall ((v_ArrVal_3498 (_ BitVec 32)) (v_ArrVal_3480 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3502 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3499 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv4 32) (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_3502) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3499))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3498))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3480) |c_~#gl_list~0.base|) .cse2)) (_ bv0 32))) (forall ((v_ArrVal_3497 (_ BitVec 32)) (v_ArrVal_3501 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3500 (Array (_ BitVec 32) (_ BitVec 32)))) (= .cse1 (select (select (store (let ((.cse3 (store (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_3500) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3501))) (store .cse3 |c_~#gl_list~0.base| (store (select .cse3 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3497))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3479) |c_~#gl_list~0.base|) .cse2)))) (forall ((v_prenex_39 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_37 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_38 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_36 (_ BitVec 32))) (let ((.cse4 (select (select (store (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| .cse1 v_prenex_38) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_prenex_39))) (store .cse5 |c_~#gl_list~0.base| (store (select .cse5 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_prenex_36))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_prenex_37) |c_~#gl_list~0.base|) .cse2))) (bvule .cse4 (bvadd (_ bv4 32) .cse4)))) (forall ((v_ArrVal_3498 (_ BitVec 32)) (v_ArrVal_3480 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3502 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3499 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store (let ((.cse6 (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_3502) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3499))) (store .cse6 |c_~#gl_list~0.base| (store (select .cse6 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3498))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3480) |c_~#gl_list~0.base|) .cse2)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))) is different from false [2022-11-23 16:19:35,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431259403] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:19:35,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:19:35,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 25] total 78 [2022-11-23 16:19:35,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722182265] [2022-11-23 16:19:35,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:19:35,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-23 16:19:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:19:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-23 16:19:35,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=6592, Unknown=173, NotChecked=1026, Total=8190 [2022-11-23 16:19:35,826 INFO L87 Difference]: Start difference. First operand 371 states and 442 transitions. Second operand has 80 states, 79 states have (on average 1.9113924050632911) internal successors, (151), 69 states have internal predecessors, (151), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 16:20:32,125 WARN L233 SmtUtils]: Spent 16.55s on a formula simplification. DAG size of input: 136 DAG size of output: 112 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:20:33,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 16:21:16,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:21:16,332 INFO L93 Difference]: Finished difference Result 586 states and 661 transitions. [2022-11-23 16:21:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-23 16:21:16,333 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 1.9113924050632911) internal successors, (151), 69 states have internal predecessors, (151), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 56 [2022-11-23 16:21:16,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:21:16,335 INFO L225 Difference]: With dead ends: 586 [2022-11-23 16:21:16,335 INFO L226 Difference]: Without dead ends: 586 [2022-11-23 16:21:16,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 139 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 3956 ImplicationChecksByTransitivity, 91.6s TimeCoverageRelationStatistics Valid=853, Invalid=10676, Unknown=267, NotChecked=1314, Total=13110 [2022-11-23 16:21:16,337 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 1703 mSDsluCounter, 3521 mSDsCounter, 0 mSdLazyCounter, 7579 mSolverCounterSat, 191 mSolverCounterUnsat, 683 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 8453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 7579 IncrementalHoareTripleChecker+Invalid, 683 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:21:16,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 3651 Invalid, 8453 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [191 Valid, 7579 Invalid, 683 Unknown, 0 Unchecked, 41.1s Time] [2022-11-23 16:21:16,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-23 16:21:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 472. [2022-11-23 16:21:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 385 states have (on average 1.3636363636363635) internal successors, (525), 442 states have internal predecessors, (525), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-23 16:21:16,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 575 transitions. [2022-11-23 16:21:16,348 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 575 transitions. Word has length 56 [2022-11-23 16:21:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:21:16,349 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 575 transitions. [2022-11-23 16:21:16,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 1.9113924050632911) internal successors, (151), 69 states have internal predecessors, (151), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 16:21:16,349 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 575 transitions. [2022-11-23 16:21:16,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 16:21:16,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:21:16,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:21:16,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-11-23 16:21:16,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (45)] Forceful destruction successful, exit code 0 [2022-11-23 16:21:16,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2022-11-23 16:21:16,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 16:21:16,959 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:21:16,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:21:16,959 INFO L85 PathProgramCache]: Analyzing trace with hash -673388594, now seen corresponding path program 1 times [2022-11-23 16:21:16,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:21:16,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769448498] [2022-11-23 16:21:16,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:21:16,960 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 [2022-11-23 16:21:16,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:21:16,961 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:21:16,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (48)] Waiting until timeout for monitored process [2022-11-23 16:21:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:21:17,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 16:21:17,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:21:17,589 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 [2022-11-23 16:21:17,780 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:21:17,781 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 32 treesize of output 14 [2022-11-23 16:21:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:21:17,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:21:17,825 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:21:17,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769448498] [2022-11-23 16:21:17,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769448498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:21:17,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:21:17,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 16:21:17,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452185930] [2022-11-23 16:21:17,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:21:17,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 16:21:17,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:21:17,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 16:21:17,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 16:21:17,827 INFO L87 Difference]: Start difference. First operand 472 states and 575 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:21:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:21:19,240 INFO L93 Difference]: Finished difference Result 471 states and 570 transitions. [2022-11-23 16:21:19,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 16:21:19,242 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-11-23 16:21:19,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:21:19,244 INFO L225 Difference]: With dead ends: 471 [2022-11-23 16:21:19,244 INFO L226 Difference]: Without dead ends: 471 [2022-11-23 16:21:19,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-23 16:21:19,245 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 136 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:21:19,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 860 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 16:21:19,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-11-23 16:21:19,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2022-11-23 16:21:19,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 385 states have (on average 1.3532467532467531) internal successors, (521), 441 states have internal predecessors, (521), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-23 16:21:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 570 transitions. [2022-11-23 16:21:19,255 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 570 transitions. Word has length 58 [2022-11-23 16:21:19,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:21:19,256 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 570 transitions. [2022-11-23 16:21:19,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:21:19,256 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 570 transitions. [2022-11-23 16:21:19,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-23 16:21:19,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:21:19,257 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:21:19,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (48)] Ended with exit code 0 [2022-11-23 16:21:19,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:21:19,470 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-23 16:21:19,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:21:19,471 INFO L85 PathProgramCache]: Analyzing trace with hash -385922916, now seen corresponding path program 1 times [2022-11-23 16:21:19,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:21:19,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580488522] [2022-11-23 16:21:19,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:21:19,471 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 [2022-11-23 16:21:19,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:21:19,472 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:21:19,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/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 (49)] Waiting until timeout for monitored process [2022-11-23 16:21:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:21:20,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 116 conjunts are in the unsatisfiable core [2022-11-23 16:21:20,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:21:20,289 INFO L321 Elim1Store]: treesize reduction 66, result has 34.0 percent of original size [2022-11-23 16:21:20,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 59 [2022-11-23 16:21:20,465 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 14 treesize of output 16 [2022-11-23 16:21:20,501 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 14 treesize of output 16 [2022-11-23 16:21:20,534 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 [2022-11-23 16:21:20,586 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 [2022-11-23 16:21:25,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:25,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:25,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:21:25,152 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-23 16:21:25,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 96 [2022-11-23 16:21:25,193 INFO L321 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2022-11-23 16:21:25,194 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 65 [2022-11-23 16:21:25,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:25,204 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 55 [2022-11-23 16:21:25,232 INFO L321 Elim1Store]: treesize reduction 33, result has 28.3 percent of original size [2022-11-23 16:21:25,232 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 57 [2022-11-23 16:21:25,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:25,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:21:25,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:25,623 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 16:21:25,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 67 [2022-11-23 16:21:25,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:25,640 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 39 treesize of output 33 [2022-11-23 16:21:25,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:25,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:21:25,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:25,752 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 16:21:25,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 84 [2022-11-23 16:21:25,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:25,772 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 43 treesize of output 35 [2022-11-23 16:21:26,335 INFO L321 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2022-11-23 16:21:26,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 44 [2022-11-23 16:21:26,727 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-23 16:21:26,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 103 treesize of output 89 [2022-11-23 16:21:26,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:26,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2022-11-23 16:21:26,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:21:26,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:26,838 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 16:21:26,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 41 [2022-11-23 16:21:26,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:26,845 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 17 treesize of output 7 [2022-11-23 16:21:29,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:21:29,874 INFO L321 Elim1Store]: treesize reduction 102, result has 19.0 percent of original size [2022-11-23 16:21:29,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 189 treesize of output 121 [2022-11-23 16:21:29,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:29,924 INFO L321 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2022-11-23 16:21:29,924 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 2 case distinctions, treesize of input 102 treesize of output 89 [2022-11-23 16:21:29,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:29,935 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 0 case distinctions, treesize of input 78 treesize of output 66 [2022-11-23 16:21:29,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:29,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:29,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 37 [2022-11-23 16:21:29,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:29,957 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 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:21:30,280 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 16 treesize of output 18 [2022-11-23 16:21:30,333 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 16:21:30,333 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 2 case distinctions, treesize of input 60 treesize of output 60 [2022-11-23 16:21:30,415 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 16:21:30,415 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 2 case distinctions, treesize of input 60 treesize of output 60 [2022-11-23 16:21:30,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2022-11-23 16:21:31,548 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 [2022-11-23 16:21:32,065 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-23 16:21:32,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 28 [2022-11-23 16:21:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:21:32,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:21:33,642 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3701 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3700 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3701)) (.cse2 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (let ((.cse1 (select (select .cse0 |c_~#gl_list~0.base|) .cse2))) (= (select (select .cse0 .cse1) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3700) |c_~#gl_list~0.base|) .cse2)) .cse1))))) is different from false [2022-11-23 16:21:36,351 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3721 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3719 (_ BitVec 32)) (v_ArrVal_3701 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3722 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3724 (_ BitVec 32)) (v_ArrVal_3720 (_ BitVec 32))) (not (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (let ((.cse0 (store (let ((.cse5 (store (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) v_ArrVal_3724)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3721))) (store .cse5 |c_~#gl_list~0.base| (store (select .cse5 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3720))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3701)) (.cse4 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (let ((.cse1 (select (select .cse0 |c_~#gl_list~0.base|) .cse4))) (= (select (select .cse0 .cse1) (select (select (store (let ((.cse2 (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_3722) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3723))) (store .cse2 |c_~#gl_list~0.base| (store (select .cse2 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3719))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3700) |c_~#gl_list~0.base|) .cse4)) .cse1)))))) is different from false [2022-11-23 16:21:36,358 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:21:36,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580488522] [2022-11-23 16:21:36,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580488522] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:21:36,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [555298676] [2022-11-23 16:21:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:21:36,359 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:21:36,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:21:36,360 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:21:36,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2022-11-23 16:21:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:21:38,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-23 16:21:38,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:21:39,113 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 16:21:39,114 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 [2022-11-23 16:21:39,458 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 [2022-11-23 16:21:39,480 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 [2022-11-23 16:21:39,503 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 [2022-11-23 16:21:39,531 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 [2022-11-23 16:21:48,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:48,448 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 159 [2022-11-23 16:21:48,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:48,489 INFO L321 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-11-23 16:21:48,489 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 186 treesize of output 169 [2022-11-23 16:21:48,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:48,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 142 [2022-11-23 16:21:48,531 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-23 16:21:48,533 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 1 case distinctions, treesize of input 136 treesize of output 54 [2022-11-23 16:21:49,050 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 16:21:49,050 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 23 treesize of output 27 [2022-11-23 16:21:49,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:49,067 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 13 treesize of output 7 [2022-11-23 16:21:49,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:49,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:49,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:49,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:21:49,116 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 16:21:49,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 48 [2022-11-23 16:21:49,561 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:21:49,561 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 1 case distinctions, treesize of input 75 treesize of output 68 [2022-11-23 16:21:49,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:49,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:49,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:21:49,582 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-23 16:21:49,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 52 [2022-11-23 16:21:50,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:50,130 INFO L321 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2022-11-23 16:21:50,130 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 [2022-11-23 16:21:50,570 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 43 treesize of output 39 [2022-11-23 16:21:50,591 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-23 16:21:50,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 39 [2022-11-23 16:21:50,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:50,641 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 27 treesize of output 11 [2022-11-23 16:21:50,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:50,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:21:50,659 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 16:21:50,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 14 [2022-11-23 16:21:54,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:55,006 INFO L321 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2022-11-23 16:21:55,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 156 treesize of output 184 [2022-11-23 16:21:55,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:55,016 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 0 case distinctions, treesize of input 174 treesize of output 142 [2022-11-23 16:21:55,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:55,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:21:55,193 INFO L321 Elim1Store]: treesize reduction 114, result has 20.8 percent of original size [2022-11-23 16:21:55,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 74 [2022-11-23 16:21:55,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:55,248 INFO L321 Elim1Store]: treesize reduction 50, result has 18.0 percent of original size [2022-11-23 16:21:55,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 42 [2022-11-23 16:21:55,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:55,256 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 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:21:55,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:21:55,812 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2022-11-23 16:21:55,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 119 [2022-11-23 16:21:55,826 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-23 16:21:55,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2022-11-23 16:21:56,280 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 30 [2022-11-23 16:21:56,293 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-23 16:21:56,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2022-11-23 16:21:57,701 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 11 [2022-11-23 16:21:58,602 INFO L321 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2022-11-23 16:21:58,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 20 [2022-11-23 16:21:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:21:58,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:22:01,337 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3874 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3873 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3874)) (.cse1 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (let ((.cse2 (select (select .cse0 |c_~#gl_list~0.base|) .cse1))) (= (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3873) |c_~#gl_list~0.base|) .cse1)) .cse2) .cse2))))) is different from false [2022-11-23 16:22:04,233 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3900 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3874 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3899 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3895 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3873 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3898 (_ BitVec 32)) (v_ArrVal_3896 (_ BitVec 32)) (v_ArrVal_3897 (_ BitVec 32))) (not (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (let ((.cse1 (store (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) v_ArrVal_3897)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3895))) (store .cse5 |c_~#gl_list~0.base| (store (select .cse5 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3896))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3874)) (.cse4 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (let ((.cse0 (select (select .cse1 |c_~#gl_list~0.base|) .cse4))) (= .cse0 (select (select .cse1 (select (select (store (let ((.cse2 (store (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_3900) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3899))) (store .cse2 |c_~#gl_list~0.base| (store (select .cse2 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3898))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3873) |c_~#gl_list~0.base|) .cse4)) .cse0))))))) is different from false [2022-11-23 16:22:04,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [555298676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:22:04,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361829565] [2022-11-23 16:22:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:22:04,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:22:04,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:22:04,248 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:22:04,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d047f3-0939-4041-b0bb-465c29e1b1e4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-23 16:22:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:22:04,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-23 16:22:04,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:22:04,756 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 16:22:04,759 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 [2022-11-23 16:22:04,787 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 [2022-11-23 16:22:05,495 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 [2022-11-23 16:22:05,510 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 16:22:05,945 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 [2022-11-23 16:22:05,962 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 [2022-11-23 16:22:18,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:18,999 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 159 [2022-11-23 16:22:19,044 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-23 16:22:19,044 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 1 case distinctions, treesize of input 136 treesize of output 54 [2022-11-23 16:22:19,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:19,065 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 37 treesize of output 32 [2022-11-23 16:22:19,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2022-11-23 16:22:19,129 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 16:22:19,130 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 18 treesize of output 12 [2022-11-23 16:22:19,617 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 16:22:19,617 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 23 treesize of output 27 [2022-11-23 16:22:19,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:19,637 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 13 treesize of output 7 [2022-11-23 16:22:19,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:19,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:19,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:19,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:22:19,673 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 16:22:19,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 48 [2022-11-23 16:22:20,090 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 16:22:20,091 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 1 case distinctions, treesize of input 65 treesize of output 58 [2022-11-23 16:22:20,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:20,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:20,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:22:20,116 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 16:22:20,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 48 [2022-11-23 16:22:20,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:20,761 INFO L321 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2022-11-23 16:22:20,761 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 [2022-11-23 16:22:20,855 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 43 treesize of output 39 [2022-11-23 16:22:20,868 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-23 16:22:20,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 39 [2022-11-23 16:22:20,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:20,916 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 27 treesize of output 11 [2022-11-23 16:22:20,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:20,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:22:20,936 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 16:22:20,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 14 [2022-11-23 16:22:25,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:26,034 INFO L321 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2022-11-23 16:22:26,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 156 treesize of output 184 [2022-11-23 16:22:26,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:26,045 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 0 case distinctions, treesize of input 174 treesize of output 142 [2022-11-23 16:22:26,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:26,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:22:26,204 INFO L321 Elim1Store]: treesize reduction 114, result has 20.8 percent of original size [2022-11-23 16:22:26,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 74 [2022-11-23 16:22:26,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:26,258 INFO L321 Elim1Store]: treesize reduction 50, result has 18.0 percent of original size [2022-11-23 16:22:26,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 42 [2022-11-23 16:22:26,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:26,266 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 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-23 16:22:27,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:22:27,287 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2022-11-23 16:22:27,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 507 treesize of output 381 [2022-11-23 16:22:27,330 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 226 [2022-11-23 16:22:27,343 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 9 treesize of output 7 [2022-11-23 16:22:27,355 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-23 16:22:27,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2022-11-23 16:22:27,386 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-23 16:22:27,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2022-11-23 16:22:27,396 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 30 [2022-11-23 16:22:27,670 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 11 [2022-11-23 16:22:27,751 INFO L321 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2022-11-23 16:22:27,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 20 [2022-11-23 16:22:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:22:27,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:22:27,902 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4046 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4045 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4046)) (.cse2 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (let ((.cse0 (select (select .cse1 |c_~#gl_list~0.base|) .cse2))) (= .cse0 (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4045) |c_~#gl_list~0.base|) .cse2)) .cse0)))))) is different from false [2022-11-23 16:22:30,297 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4069 (_ BitVec 32)) (v_ArrVal_4066 (_ BitVec 32)) (v_ArrVal_4064 (_ BitVec 32)) (v_ArrVal_4046 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4068 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4065 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4067 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4045 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (let ((.cse0 (store (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) v_ArrVal_4066)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4065))) (store .cse5 |c_~#gl_list~0.base| (store (select .cse5 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_4069))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4046)) (.cse3 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (let ((.cse4 (select (select .cse0 |c_~#gl_list~0.base|) .cse3))) (= (select (select .cse0 (select (select (store (let ((.cse1 (store (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_4068) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4067))) (store .cse1 |c_~#gl_list~0.base| (store (select .cse1 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_4064))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4045) |c_~#gl_list~0.base|) .cse3)) .cse4) .cse4)))))) is different from false [2022-11-23 16:22:30,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361829565] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:22:30,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:22:30,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30, 31] total 67 [2022-11-23 16:22:30,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856530074] [2022-11-23 16:22:30,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:22:30,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-11-23 16:22:30,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:22:30,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-11-23 16:22:30,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=5816, Unknown=227, NotChecked=966, Total=7310 [2022-11-23 16:22:30,310 INFO L87 Difference]: Start difference. First operand 471 states and 570 transitions. Second operand has 68 states, 67 states have (on average 1.791044776119403) internal successors, (120), 59 states have internal predecessors, (120), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-23 16:22:43,432 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 107 DAG size of output: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)