./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5eb3f0f7fbd0ab57546a0ac02256a38ed05a9424bb7a81ac298c225eddd7bc79 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:30:25,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:30:25,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:30:25,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:30:25,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:30:25,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:30:25,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:30:25,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:30:25,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:30:25,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:30:25,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:30:25,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:30:25,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:30:25,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:30:25,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:30:25,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:30:25,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:30:25,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:30:25,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:30:25,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:30:25,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:30:25,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:30:25,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:30:25,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:30:25,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:30:25,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:30:25,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:30:25,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:30:25,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:30:25,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:30:25,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:30:25,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:30:25,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:30:25,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:30:25,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:30:25,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:30:25,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:30:25,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:30:25,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:30:25,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:30:25,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:30:25,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:30:25,888 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:30:25,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:30:25,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:30:25,890 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:30:25,890 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:30:25,890 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:30:25,890 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:30:25,891 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:30:25,892 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:30:25,892 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:30:25,893 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:30:25,893 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:30:25,893 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:30:25,893 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:30:25,893 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:30:25,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:30:25,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:30:25,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:30:25,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:30:25,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:30:25,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:30:25,895 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:30:25,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:30:25,895 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:30:25,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:30:25,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:30:25,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:30:25,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:30:25,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:30:25,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:30:25,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:30:25,897 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:30:25,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:30:25,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:30:25,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:30:25,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:30:25,898 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eb3f0f7fbd0ab57546a0ac02256a38ed05a9424bb7a81ac298c225eddd7bc79 [2021-11-07 01:30:26,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:30:26,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:30:26,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:30:26,188 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:30:26,189 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:30:26,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2021-11-07 01:30:26,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/data/a8991633b/3a0b55a933a94bd09fe95ce1862439a3/FLAGf0ae97ea7 [2021-11-07 01:30:27,124 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:30:27,125 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2021-11-07 01:30:27,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/data/a8991633b/3a0b55a933a94bd09fe95ce1862439a3/FLAGf0ae97ea7 [2021-11-07 01:30:27,604 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/data/a8991633b/3a0b55a933a94bd09fe95ce1862439a3 [2021-11-07 01:30:27,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:30:27,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:30:27,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:30:27,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:30:27,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:30:27,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:30:27" (1/1) ... [2021-11-07 01:30:27,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0da80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:27, skipping insertion in model container [2021-11-07 01:30:27,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:30:27" (1/1) ... [2021-11-07 01:30:27,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:30:27,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:30:28,723 WARN L228 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_38843e76-14c2-43de-b729-8c760f0d9f42/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2021-11-07 01:30:29,224 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:30:29,231 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:30:29,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:30:29,838 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:30:29,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7236a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:29, skipping insertion in model container [2021-11-07 01:30:29,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:30:29,840 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:30:29,844 INFO L168 Benchmark]: Toolchain (without parser) took 2232.02 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 59.1 MB in the beginning and 67.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:30:29,845 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 67.3 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:30:29,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2229.58 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 58.9 MB in the beginning and 67.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:30:29,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 67.3 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2229.58 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 58.9 MB in the beginning and 67.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5879]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5eb3f0f7fbd0ab57546a0ac02256a38ed05a9424bb7a81ac298c225eddd7bc79 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:30:32,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:30:32,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:30:32,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:30:32,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:30:32,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:30:32,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:30:32,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:30:32,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:30:32,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:30:32,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:30:32,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:30:32,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:30:32,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:30:32,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:30:32,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:30:32,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:30:32,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:30:32,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:30:32,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:30:32,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:30:32,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:30:32,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:30:32,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:30:32,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:30:32,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:30:32,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:30:32,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:30:32,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:30:32,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:30:32,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:30:32,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:30:32,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:30:32,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:30:32,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:30:32,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:30:32,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:30:32,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:30:32,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:30:32,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:30:32,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:30:32,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:30:32,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:30:32,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:30:32,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:30:32,298 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:30:32,298 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:30:32,299 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:30:32,299 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:30:32,299 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:30:32,299 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:30:32,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:30:32,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:30:32,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:30:32,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:30:32,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:30:32,303 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:30:32,303 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:30:32,303 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:30:32,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:30:32,304 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:30:32,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:30:32,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:30:32,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:30:32,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:30:32,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:30:32,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:30:32,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:30:32,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:30:32,306 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:30:32,307 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:32,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:30:32,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:30:32,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:30:32,308 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_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eb3f0f7fbd0ab57546a0ac02256a38ed05a9424bb7a81ac298c225eddd7bc79 [2021-11-07 01:30:32,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:30:32,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:30:32,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:30:32,759 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:30:32,760 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:30:32,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2021-11-07 01:30:32,840 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/data/89ef004ab/266664606401484281dcb8135f3d4570/FLAG382b22a32 [2021-11-07 01:30:33,855 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:30:33,856 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2021-11-07 01:30:33,931 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/data/89ef004ab/266664606401484281dcb8135f3d4570/FLAG382b22a32 [2021-11-07 01:30:34,310 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/data/89ef004ab/266664606401484281dcb8135f3d4570 [2021-11-07 01:30:34,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:30:34,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:30:34,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:30:34,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:30:34,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:30:34,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:30:34" (1/1) ... [2021-11-07 01:30:34,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476d705c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:34, skipping insertion in model container [2021-11-07 01:30:34,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:30:34" (1/1) ... [2021-11-07 01:30:34,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:30:34,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:30:35,497 WARN L228 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_38843e76-14c2-43de-b729-8c760f0d9f42/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2021-11-07 01:30:36,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:30:36,668 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:30:36,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:30:36,850 WARN L228 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_38843e76-14c2-43de-b729-8c760f0d9f42/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2021-11-07 01:30:37,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:30:37,148 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:30:37,303 WARN L228 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_38843e76-14c2-43de-b729-8c760f0d9f42/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2021-11-07 01:30:37,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:30:37,765 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:30:37,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:37 WrapperNode [2021-11-07 01:30:37,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:30:37,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:30:37,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:30:37,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:30:37,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:37" (1/1) ... [2021-11-07 01:30:37,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:37" (1/1) ... [2021-11-07 01:30:39,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:30:39,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:30:39,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:30:39,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:30:39,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:37" (1/1) ... [2021-11-07 01:30:39,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:37" (1/1) ... [2021-11-07 01:30:39,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:37" (1/1) ... [2021-11-07 01:30:39,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:37" (1/1) ... [2021-11-07 01:30:40,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:37" (1/1) ... [2021-11-07 01:30:40,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:37" (1/1) ... [2021-11-07 01:30:40,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:37" (1/1) ... [2021-11-07 01:30:40,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:30:40,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:30:40,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:30:40,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:30:40,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:37" (1/1) ... [2021-11-07 01:30:40,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:30:40,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:30:40,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:30:40,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:30:40,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:30:40,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:30:40,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:30:40,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:30:40,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:30:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:30:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:30:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:30:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2021-11-07 01:30:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 01:30:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:30:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:30:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:30:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:30:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:30:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:30:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:30:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:30:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:30:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:30:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2021-11-07 01:30:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2021-11-07 01:30:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:30:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:30:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:30:40,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:30:40,778 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2021-11-07 01:30:40,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:30:40,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:30:40,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:30:40,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:30:40,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:30:40,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:30:40,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:30:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:33:35,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:33:35,234 INFO L299 CfgBuilder]: Removed 4671 assume(true) statements. [2021-11-07 01:33:35,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:33:35 BoogieIcfgContainer [2021-11-07 01:33:35,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:33:35,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:33:35,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:33:35,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:33:35,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:30:34" (1/3) ... [2021-11-07 01:33:35,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f45049b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:33:35, skipping insertion in model container [2021-11-07 01:33:35,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:37" (2/3) ... [2021-11-07 01:33:35,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f45049b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:33:35, skipping insertion in model container [2021-11-07 01:33:35,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:33:35" (3/3) ... [2021-11-07 01:33:35,254 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2021-11-07 01:33:35,267 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:33:35,267 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 01:33:35,338 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:33:35,344 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:33:35,344 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 01:33:35,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 7107 states, 7099 states have (on average 1.449359064656994) internal successors, (10289), 7106 states have internal predecessors, (10289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:35,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 01:33:35,468 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:35,469 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:33:35,470 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:33:35,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:35,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1203932107, now seen corresponding path program 1 times [2021-11-07 01:33:35,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:35,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527176224] [2021-11-07 01:33:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:35,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:35,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:35,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:35,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:33:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:41,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1994 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:33:41,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:41,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:41,771 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:41,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527176224] [2021-11-07 01:33:41,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527176224] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:41,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:33:41,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:33:41,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213738909] [2021-11-07 01:33:41,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:33:41,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:41,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:33:41,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:33:41,813 INFO L87 Difference]: Start difference. First operand has 7107 states, 7099 states have (on average 1.449359064656994) internal successors, (10289), 7106 states have internal predecessors, (10289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:42,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:42,770 INFO L93 Difference]: Finished difference Result 14217 states and 20587 transitions. [2021-11-07 01:33:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:33:42,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 40 [2021-11-07 01:33:42,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:42,831 INFO L225 Difference]: With dead ends: 14217 [2021-11-07 01:33:42,831 INFO L226 Difference]: Without dead ends: 6777 [2021-11-07 01:33:42,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:33:42,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6777 states. [2021-11-07 01:33:43,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6777 to 6777. [2021-11-07 01:33:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6777 states, 6770 states have (on average 1.4152141802067948) internal successors, (9581), 6776 states have internal predecessors, (9581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6777 states to 6777 states and 9581 transitions. [2021-11-07 01:33:43,130 INFO L78 Accepts]: Start accepts. Automaton has 6777 states and 9581 transitions. Word has length 40 [2021-11-07 01:33:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:43,130 INFO L470 AbstractCegarLoop]: Abstraction has 6777 states and 9581 transitions. [2021-11-07 01:33:43,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:43,131 INFO L276 IsEmpty]: Start isEmpty. Operand 6777 states and 9581 transitions. [2021-11-07 01:33:43,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:33:43,139 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:43,139 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:33:43,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:33:43,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:33:43,367 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:33:43,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:43,368 INFO L85 PathProgramCache]: Analyzing trace with hash 52498365, now seen corresponding path program 1 times [2021-11-07 01:33:43,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:43,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197785643] [2021-11-07 01:33:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:43,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:43,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:43,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:43,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:33:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:49,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 2019 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:33:49,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:33:49,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:33:50,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:50,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197785643] [2021-11-07 01:33:50,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197785643] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:33:50,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1616983040] [2021-11-07 01:33:50,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:50,163 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:33:50,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:33:50,180 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:33:50,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 01:33:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:52,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 2019 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:33:52,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:52,866 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:33:52,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:33:53,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1616983040] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:53,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:33:53,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:33:53,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793918497] [2021-11-07 01:33:53,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:33:53,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:53,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:33:53,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:33:53,109 INFO L87 Difference]: Start difference. First operand 6777 states and 9581 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:56,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:56,431 INFO L93 Difference]: Finished difference Result 26777 states and 37935 transitions. [2021-11-07 01:33:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:33:56,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 45 [2021-11-07 01:33:56,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:56,570 INFO L225 Difference]: With dead ends: 26777 [2021-11-07 01:33:56,570 INFO L226 Difference]: Without dead ends: 20064 [2021-11-07 01:33:56,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:33:56,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20064 states. [2021-11-07 01:33:57,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20064 to 20056. [2021-11-07 01:33:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20056 states, 20049 states have (on average 1.4176766921043444) internal successors, (28423), 20055 states have internal predecessors, (28423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:57,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20056 states to 20056 states and 28423 transitions. [2021-11-07 01:33:57,583 INFO L78 Accepts]: Start accepts. Automaton has 20056 states and 28423 transitions. Word has length 45 [2021-11-07 01:33:57,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:57,583 INFO L470 AbstractCegarLoop]: Abstraction has 20056 states and 28423 transitions. [2021-11-07 01:33:57,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:57,585 INFO L276 IsEmpty]: Start isEmpty. Operand 20056 states and 28423 transitions. [2021-11-07 01:33:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:33:57,589 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:57,590 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:33:57,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:57,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:58,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:33:58,008 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:33:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1777399201, now seen corresponding path program 1 times [2021-11-07 01:33:58,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:58,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249485257] [2021-11-07 01:33:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:58,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:58,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:58,020 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:58,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:34:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:04,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:04,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:34:05,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:34:05,998 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:05,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249485257] [2021-11-07 01:34:05,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249485257] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:05,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [515819883] [2021-11-07 01:34:05,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:05,999 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:05,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:06,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:06,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 01:34:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:08,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:34:08,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:08,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:34:08,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:34:08,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [515819883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:08,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:34:08,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:34:08,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248815265] [2021-11-07 01:34:08,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:34:08,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:08,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:34:08,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:08,839 INFO L87 Difference]: Start difference. First operand 20056 states and 28423 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:14,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:14,999 INFO L93 Difference]: Finished difference Result 48128 states and 68252 transitions. [2021-11-07 01:34:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:34:14,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 50 [2021-11-07 01:34:15,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:15,091 INFO L225 Difference]: With dead ends: 48128 [2021-11-07 01:34:15,091 INFO L226 Difference]: Without dead ends: 28136 [2021-11-07 01:34:15,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28136 states. [2021-11-07 01:34:15,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28136 to 28119. [2021-11-07 01:34:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28119 states, 28112 states have (on average 1.4188602731929425) internal successors, (39887), 28118 states have internal predecessors, (39887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28119 states to 28119 states and 39887 transitions. [2021-11-07 01:34:16,093 INFO L78 Accepts]: Start accepts. Automaton has 28119 states and 39887 transitions. Word has length 50 [2021-11-07 01:34:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:16,093 INFO L470 AbstractCegarLoop]: Abstraction has 28119 states and 39887 transitions. [2021-11-07 01:34:16,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:16,094 INFO L276 IsEmpty]: Start isEmpty. Operand 28119 states and 39887 transitions. [2021-11-07 01:34:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:34:16,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:16,096 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:16,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:16,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:16,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:16,514 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:34:16,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:16,515 INFO L85 PathProgramCache]: Analyzing trace with hash 374556302, now seen corresponding path program 1 times [2021-11-07 01:34:16,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:16,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674279396] [2021-11-07 01:34:16,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:16,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:16,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:16,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:16,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:34:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:22,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 2054 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:22,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:34:23,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:34:23,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:23,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674279396] [2021-11-07 01:34:23,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674279396] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:23,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1889721313] [2021-11-07 01:34:23,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:23,706 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:23,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:23,711 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:23,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:34:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:26,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 2054 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:34:26,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:34:27,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:34:28,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1889721313] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:28,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:34:28,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-07 01:34:28,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016319392] [2021-11-07 01:34:28,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:34:28,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:28,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:34:28,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:34:28,151 INFO L87 Difference]: Start difference. First operand 28119 states and 39887 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:28,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:28,624 INFO L93 Difference]: Finished difference Result 28119 states and 39887 transitions. [2021-11-07 01:34:28,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:34:28,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 52 [2021-11-07 01:34:28,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:28,684 INFO L225 Difference]: With dead ends: 28119 [2021-11-07 01:34:28,685 INFO L226 Difference]: Without dead ends: 28117 [2021-11-07 01:34:28,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:34:28,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28117 states. [2021-11-07 01:34:29,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28117 to 28117. [2021-11-07 01:34:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28117 states, 28111 states have (on average 1.4188396001565224) internal successors, (39885), 28116 states have internal predecessors, (39885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28117 states to 28117 states and 39885 transitions. [2021-11-07 01:34:29,952 INFO L78 Accepts]: Start accepts. Automaton has 28117 states and 39885 transitions. Word has length 52 [2021-11-07 01:34:29,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:29,952 INFO L470 AbstractCegarLoop]: Abstraction has 28117 states and 39885 transitions. [2021-11-07 01:34:29,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 28117 states and 39885 transitions. [2021-11-07 01:34:29,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 01:34:29,955 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:29,955 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:29,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:30,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:30,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:30,373 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:34:30,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:30,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1273634472, now seen corresponding path program 1 times [2021-11-07 01:34:30,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:30,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147136631] [2021-11-07 01:34:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:30,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:30,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:30,384 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:30,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:34:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:36,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 2055 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:36,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:34:36,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:34:37,382 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:37,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147136631] [2021-11-07 01:34:37,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147136631] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:37,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1601732707] [2021-11-07 01:34:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:37,382 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:37,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:37,383 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:37,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:34:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:40,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 2055 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:34:40,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:41,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:34:41,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:34:42,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1601732707] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:42,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:34:42,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-07 01:34:42,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503216906] [2021-11-07 01:34:42,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:34:42,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:34:42,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:34:42,087 INFO L87 Difference]: Start difference. First operand 28117 states and 39885 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:42,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:42,718 INFO L93 Difference]: Finished difference Result 28117 states and 39885 transitions. [2021-11-07 01:34:42,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:34:42,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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 53 [2021-11-07 01:34:42,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:42,770 INFO L225 Difference]: With dead ends: 28117 [2021-11-07 01:34:42,770 INFO L226 Difference]: Without dead ends: 28115 [2021-11-07 01:34:42,778 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:34:42,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28115 states. [2021-11-07 01:34:43,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28115 to 28115. [2021-11-07 01:34:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28115 states, 28110 states have (on average 1.4188189256492352) internal successors, (39883), 28114 states have internal predecessors, (39883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28115 states to 28115 states and 39883 transitions. [2021-11-07 01:34:43,918 INFO L78 Accepts]: Start accepts. Automaton has 28115 states and 39883 transitions. Word has length 53 [2021-11-07 01:34:43,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:43,921 INFO L470 AbstractCegarLoop]: Abstraction has 28115 states and 39883 transitions. [2021-11-07 01:34:43,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:43,922 INFO L276 IsEmpty]: Start isEmpty. Operand 28115 states and 39883 transitions. [2021-11-07 01:34:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:34:43,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:43,927 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:43,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:44,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-07 01:34:44,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:44,343 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:34:44,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:44,343 INFO L85 PathProgramCache]: Analyzing trace with hash -827940904, now seen corresponding path program 1 times [2021-11-07 01:34:44,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:44,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211391272] [2021-11-07 01:34:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:44,348 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:44,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:44,349 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:44,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:34:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:50,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 2056 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:50,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:34:50,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:51,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:34:51,400 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:51,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211391272] [2021-11-07 01:34:51,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211391272] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:51,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1059999568] [2021-11-07 01:34:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:51,401 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:51,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:51,420 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:51,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:34:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:53,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 2056 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:34:53,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:34:54,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:34:55,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1059999568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:55,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:34:55,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:34:55,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701674857] [2021-11-07 01:34:55,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:34:55,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:34:55,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:55,069 INFO L87 Difference]: Start difference. First operand 28115 states and 39883 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:55,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:55,667 INFO L93 Difference]: Finished difference Result 28115 states and 39883 transitions. [2021-11-07 01:34:55,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:34:55,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 54 [2021-11-07 01:34:55,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:55,703 INFO L225 Difference]: With dead ends: 28115 [2021-11-07 01:34:55,703 INFO L226 Difference]: Without dead ends: 28113 [2021-11-07 01:34:55,710 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28113 states. [2021-11-07 01:34:56,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28113 to 28113. [2021-11-07 01:34:56,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28113 states, 28109 states have (on average 1.418798249670924) internal successors, (39881), 28112 states have internal predecessors, (39881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28113 states to 28113 states and 39881 transitions. [2021-11-07 01:34:56,862 INFO L78 Accepts]: Start accepts. Automaton has 28113 states and 39881 transitions. Word has length 54 [2021-11-07 01:34:56,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:56,863 INFO L470 AbstractCegarLoop]: Abstraction has 28113 states and 39881 transitions. [2021-11-07 01:34:56,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:56,863 INFO L276 IsEmpty]: Start isEmpty. Operand 28113 states and 39881 transitions. [2021-11-07 01:34:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:34:56,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:56,865 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:56,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:57,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:57,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:57,284 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:34:57,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:57,285 INFO L85 PathProgramCache]: Analyzing trace with hash 103657826, now seen corresponding path program 1 times [2021-11-07 01:34:57,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:57,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248923699] [2021-11-07 01:34:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:57,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:57,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:57,289 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:57,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:35:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:03,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 2057 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:35:03,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:35:04,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:35:04,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:04,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248923699] [2021-11-07 01:35:04,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248923699] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:04,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [366970389] [2021-11-07 01:35:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:04,728 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:04,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:04,729 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:04,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 01:35:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:07,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 2057 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:07,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:35:07,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:35:08,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [366970389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:08,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:35:08,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:35:08,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941954749] [2021-11-07 01:35:08,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:35:08,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:08,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:35:08,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:08,610 INFO L87 Difference]: Start difference. First operand 28113 states and 39881 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:09,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:09,581 INFO L93 Difference]: Finished difference Result 56148 states and 79672 transitions. [2021-11-07 01:35:09,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:09,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 01:35:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:09,621 INFO L225 Difference]: With dead ends: 56148 [2021-11-07 01:35:09,621 INFO L226 Difference]: Without dead ends: 28099 [2021-11-07 01:35:09,659 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:09,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28099 states. [2021-11-07 01:35:10,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28099 to 28095. [2021-11-07 01:35:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28095 states, 28092 states have (on average 1.418802506051545) internal successors, (39857), 28094 states have internal predecessors, (39857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28095 states to 28095 states and 39857 transitions. [2021-11-07 01:35:10,752 INFO L78 Accepts]: Start accepts. Automaton has 28095 states and 39857 transitions. Word has length 55 [2021-11-07 01:35:10,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:10,752 INFO L470 AbstractCegarLoop]: Abstraction has 28095 states and 39857 transitions. [2021-11-07 01:35:10,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 28095 states and 39857 transitions. [2021-11-07 01:35:10,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:35:10,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:10,755 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:10,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:11,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:11,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:11,171 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:35:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:11,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1081552606, now seen corresponding path program 1 times [2021-11-07 01:35:11,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:11,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889006440] [2021-11-07 01:35:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:11,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:11,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:11,176 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:11,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:35:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:17,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 2058 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:35:17,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:35:18,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:35:18,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:18,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889006440] [2021-11-07 01:35:18,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889006440] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:18,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1835745371] [2021-11-07 01:35:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:18,945 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:18,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:18,946 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:18,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 01:35:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:21,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 2058 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:21,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:35:22,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:35:23,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1835745371] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:23,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:35:23,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:35:23,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983482212] [2021-11-07 01:35:23,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:35:23,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:23,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:35:23,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:23,233 INFO L87 Difference]: Start difference. First operand 28095 states and 39857 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:23,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:23,945 INFO L93 Difference]: Finished difference Result 28095 states and 39857 transitions. [2021-11-07 01:35:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:23,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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 56 [2021-11-07 01:35:23,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:23,977 INFO L225 Difference]: With dead ends: 28095 [2021-11-07 01:35:23,977 INFO L226 Difference]: Without dead ends: 28086 [2021-11-07 01:35:23,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:24,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28086 states. [2021-11-07 01:35:24,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28086 to 18769. [2021-11-07 01:35:24,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18769 states, 18767 states have (on average 1.4181275643416635) internal successors, (26614), 18768 states have internal predecessors, (26614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:24,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18769 states to 18769 states and 26614 transitions. [2021-11-07 01:35:24,671 INFO L78 Accepts]: Start accepts. Automaton has 18769 states and 26614 transitions. Word has length 56 [2021-11-07 01:35:24,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:24,671 INFO L470 AbstractCegarLoop]: Abstraction has 18769 states and 26614 transitions. [2021-11-07 01:35:24,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:24,671 INFO L276 IsEmpty]: Start isEmpty. Operand 18769 states and 26614 transitions. [2021-11-07 01:35:24,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:35:24,675 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:24,675 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:24,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:24,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-07 01:35:25,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:25,077 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:35:25,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:25,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1799619837, now seen corresponding path program 1 times [2021-11-07 01:35:25,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:25,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715291003] [2021-11-07 01:35:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:25,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:25,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:25,083 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:25,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:35:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:31,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 2171 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:35:31,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:35:32,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:35:32,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:32,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715291003] [2021-11-07 01:35:32,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715291003] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:32,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [15653950] [2021-11-07 01:35:32,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:32,924 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:32,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:32,925 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:32,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:35:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:39,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 2171 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:35:39,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:39,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:35:39,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:35:40,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [15653950] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:40,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921766127] [2021-11-07 01:35:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:40,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:35:40,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:35:40,047 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:35:40,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 01:35:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:42,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 2171 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:35:42,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:35:43,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:35:43,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921766127] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:43,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:35:43,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:35:43,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273552640] [2021-11-07 01:35:43,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:35:43,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:43,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:35:43,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:35:43,879 INFO L87 Difference]: Start difference. First operand 18769 states and 26614 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:46,673 INFO L93 Difference]: Finished difference Result 37530 states and 53257 transitions. [2021-11-07 01:35:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:35:46,674 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 84 [2021-11-07 01:35:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:46,695 INFO L225 Difference]: With dead ends: 37530 [2021-11-07 01:35:46,695 INFO L226 Difference]: Without dead ends: 18817 [2021-11-07 01:35:46,711 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:35:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18817 states. [2021-11-07 01:35:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18817 to 18817. [2021-11-07 01:35:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18817 states, 18815 states have (on average 1.417060855700239) internal successors, (26662), 18816 states have internal predecessors, (26662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:47,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18817 states to 18817 states and 26662 transitions. [2021-11-07 01:35:47,490 INFO L78 Accepts]: Start accepts. Automaton has 18817 states and 26662 transitions. Word has length 84 [2021-11-07 01:35:47,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:47,490 INFO L470 AbstractCegarLoop]: Abstraction has 18817 states and 26662 transitions. [2021-11-07 01:35:47,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:47,491 INFO L276 IsEmpty]: Start isEmpty. Operand 18817 states and 26662 transitions. [2021-11-07 01:35:47,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 01:35:47,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:47,494 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:47,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:47,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-07 01:35:47,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:48,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:48,108 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:35:48,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:48,108 INFO L85 PathProgramCache]: Analyzing trace with hash 355136771, now seen corresponding path program 2 times [2021-11-07 01:35:48,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:48,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894688861] [2021-11-07 01:35:48,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:35:48,112 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:48,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:48,113 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:48,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38843e76-14c2-43de-b729-8c760f0d9f42/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process