./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.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_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/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_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/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_f85d4081-f8f1-4dc4-be56-0b7761153ecd/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 f3090fd14639372da088dcbc149768c93516e312be941c28b3a0b4b80aaee842 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:19:21,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:19:21,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:19:22,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:19:22,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:19:22,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:19:22,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:19:22,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:19:22,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:19:22,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:19:22,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:19:22,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:19:22,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:19:22,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:19:22,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:19:22,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:19:22,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:19:22,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:19:22,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:19:22,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:19:22,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:19:22,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:19:22,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:19:22,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:19:22,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:19:22,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:19:22,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:19:22,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:19:22,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:19:22,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:19:22,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:19:22,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:19:22,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:19:22,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:19:22,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:19:22,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:19:22,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:19:22,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:19:22,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:19:22,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:19:22,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:19:22,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:19:22,109 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:19:22,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:19:22,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:19:22,116 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:19:22,116 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:19:22,117 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:19:22,117 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:19:22,117 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:19:22,117 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:19:22,118 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:19:22,119 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:19:22,119 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:19:22,120 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:19:22,120 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:19:22,120 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:19:22,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:19:22,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:19:22,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:19:22,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:19:22,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:19:22,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:19:22,123 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:19:22,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:19:22,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:19:22,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:19:22,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:19:22,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:19:22,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:19:22,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:19:22,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:19:22,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:19:22,126 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:19:22,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:19:22,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:19:22,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:19:22,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:19:22,128 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_f85d4081-f8f1-4dc4-be56-0b7761153ecd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3090fd14639372da088dcbc149768c93516e312be941c28b3a0b4b80aaee842 [2021-11-07 02:19:22,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:19:22,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:19:22,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:19:22,473 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:19:22,474 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:19:22,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-11-07 02:19:22,544 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/data/90a1e6d43/50a30fe4a9a04d4b922f384e41d60548/FLAG413750d90 [2021-11-07 02:19:23,564 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:19:23,565 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-11-07 02:19:23,616 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/data/90a1e6d43/50a30fe4a9a04d4b922f384e41d60548/FLAG413750d90 [2021-11-07 02:19:24,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/data/90a1e6d43/50a30fe4a9a04d4b922f384e41d60548 [2021-11-07 02:19:24,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:19:24,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:19:24,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:19:24,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:19:24,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:19:24,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:19:24" (1/1) ... [2021-11-07 02:19:24,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6360852d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:24, skipping insertion in model container [2021-11-07 02:19:24,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:19:24" (1/1) ... [2021-11-07 02:19:24,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:19:24,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:19:25,270 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 02:19:25,290 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 02:19:25,421 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 02:19:25,435 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 02:19:25,454 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 02:19:25,470 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 02:19:25,471 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 02:19:25,498 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 02:19:25,499 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 02:19:25,521 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 02:19:25,546 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 02:19:25,554 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 02:19:25,561 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 02:19:25,575 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 02:19:25,576 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 02:19:25,607 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 02:19:25,667 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_f85d4081-f8f1-4dc4-be56-0b7761153ecd/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i[159323,159336] [2021-11-07 02:19:25,688 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 02:19:25,689 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 02:19:25,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:19:25,796 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 02:19:25,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@740444e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:25, skipping insertion in model container [2021-11-07 02:19:25,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:19:25,798 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:19:25,803 INFO L168 Benchmark]: Toolchain (without parser) took 1737.22 ms. Allocated memory is still 107.0 MB. Free memory was 61.5 MB in the beginning and 67.3 MB in the end (delta: -5.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:19:25,806 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 107.0 MB. Free memory was 84.7 MB in the beginning and 84.6 MB in the end (delta: 66.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:19:25,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1688.62 ms. Allocated memory is still 107.0 MB. Free memory was 83.5 MB in the beginning and 67.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:19:25,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 107.0 MB. Free memory was 84.7 MB in the beginning and 84.6 MB in the end (delta: 66.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1688.62 ms. Allocated memory is still 107.0 MB. Free memory was 83.5 MB in the beginning and 67.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3444]: 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_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/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_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/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_f85d4081-f8f1-4dc4-be56-0b7761153ecd/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 f3090fd14639372da088dcbc149768c93516e312be941c28b3a0b4b80aaee842 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:19:28,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:19:28,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:19:28,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:19:28,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:19:28,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:19:28,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:19:28,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:19:28,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:19:28,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:19:28,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:19:28,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:19:28,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:19:28,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:19:28,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:19:28,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:19:28,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:19:28,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:19:28,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:19:28,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:19:28,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:19:28,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:19:28,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:19:28,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:19:28,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:19:28,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:19:28,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:19:28,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:19:28,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:19:28,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:19:28,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:19:28,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:19:28,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:19:28,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:19:28,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:19:28,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:19:28,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:19:28,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:19:28,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:19:28,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:19:28,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:19:28,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:19:28,514 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:19:28,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:19:28,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:19:28,517 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:19:28,517 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:19:28,517 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:19:28,518 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:19:28,518 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:19:28,518 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:19:28,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:19:28,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:19:28,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:19:28,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:19:28,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:19:28,522 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:19:28,523 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:19:28,523 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:19:28,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:19:28,523 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:19:28,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:19:28,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:19:28,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:19:28,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:19:28,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:19:28,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:19:28,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:19:28,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:19:28,526 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:19:28,526 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:19:28,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:19:28,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:19:28,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:19:28,527 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_f85d4081-f8f1-4dc4-be56-0b7761153ecd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3090fd14639372da088dcbc149768c93516e312be941c28b3a0b4b80aaee842 [2021-11-07 02:19:28,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:19:29,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:19:29,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:19:29,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:19:29,020 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:19:29,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-11-07 02:19:29,109 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/data/47c48f204/e29694c15dbb41eeb1df29089998b638/FLAG0d4037029 [2021-11-07 02:19:30,803 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:19:30,819 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-11-07 02:19:30,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/data/47c48f204/e29694c15dbb41eeb1df29089998b638/FLAG0d4037029 [2021-11-07 02:19:31,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/data/47c48f204/e29694c15dbb41eeb1df29089998b638 [2021-11-07 02:19:31,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:19:31,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:19:31,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:19:31,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:19:31,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:19:31,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:19:31" (1/1) ... [2021-11-07 02:19:31,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57231db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:31, skipping insertion in model container [2021-11-07 02:19:31,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:19:31" (1/1) ... [2021-11-07 02:19:31,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:19:31,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:19:33,592 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_f85d4081-f8f1-4dc4-be56-0b7761153ecd/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i[159323,159336] [2021-11-07 02:19:33,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:19:33,714 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:19:33,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:19:34,013 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_f85d4081-f8f1-4dc4-be56-0b7761153ecd/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i[159323,159336] [2021-11-07 02:19:34,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:19:34,078 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:19:34,370 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_f85d4081-f8f1-4dc4-be56-0b7761153ecd/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i[159323,159336] [2021-11-07 02:19:34,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:19:34,519 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:19:34,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:34 WrapperNode [2021-11-07 02:19:34,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:19:34,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:19:34,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:19:34,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:19:34,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:34" (1/1) ... [2021-11-07 02:19:34,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:34" (1/1) ... [2021-11-07 02:19:34,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:19:34,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:19:34,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:19:34,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:19:34,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:34" (1/1) ... [2021-11-07 02:19:34,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:34" (1/1) ... [2021-11-07 02:19:34,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:34" (1/1) ... [2021-11-07 02:19:34,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:34" (1/1) ... [2021-11-07 02:19:35,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:34" (1/1) ... [2021-11-07 02:19:35,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:34" (1/1) ... [2021-11-07 02:19:35,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:34" (1/1) ... [2021-11-07 02:19:35,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:19:35,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:19:35,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:19:35,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:19:35,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:34" (1/1) ... [2021-11-07 02:19:35,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:19:35,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:19:35,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:19:35,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:19:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:19:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:19:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:19:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:19:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:19:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:19:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:19:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:19:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:19:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:19:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:19:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:19:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:19:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 02:19:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:19:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:19:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:19:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:19:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:19:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:19:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:19:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:19:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:19:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:19:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:19:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:19:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:19:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:19:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:19:35,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:19:36,026 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:19:36,050 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:19:36,053 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:19:36,093 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:19:36,102 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:19:36,105 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:19:36,128 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:19:55,971 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##254: assume false; [2021-11-07 02:19:55,971 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##255: assume !false; [2021-11-07 02:19:55,971 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##235: assume !false; [2021-11-07 02:19:55,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##234: assume false; [2021-11-07 02:19:55,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##447: assume !false; [2021-11-07 02:19:55,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##446: assume false; [2021-11-07 02:19:55,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##191: assume false; [2021-11-07 02:19:55,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##192: assume !false; [2021-11-07 02:19:55,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##36: assume !false; [2021-11-07 02:19:55,973 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume false; [2021-11-07 02:19:55,973 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume !false; [2021-11-07 02:19:55,973 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##138: assume false; [2021-11-07 02:19:55,973 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##115: assume false; [2021-11-07 02:19:55,973 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##116: assume !false; [2021-11-07 02:19:56,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:19:56,042 INFO L299 CfgBuilder]: Removed 509 assume(true) statements. [2021-11-07 02:19:56,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:56 BoogieIcfgContainer [2021-11-07 02:19:56,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:19:56,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:19:56,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:19:56,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:19:56,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:19:31" (1/3) ... [2021-11-07 02:19:56,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8114fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:56, skipping insertion in model container [2021-11-07 02:19:56,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:34" (2/3) ... [2021-11-07 02:19:56,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8114fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:56, skipping insertion in model container [2021-11-07 02:19:56,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:56" (3/3) ... [2021-11-07 02:19:56,061 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-11-07 02:19:56,080 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:19:56,080 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-07 02:19:56,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:19:56,239 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 02:19:56,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-07 02:19:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 562 states, 553 states have (on average 1.4990958408679929) internal successors, (829), 561 states have internal predecessors, (829), 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 02:19:56,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 02:19:56,338 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:56,339 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:19:56,340 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 02:19:56,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:56,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1571270776, now seen corresponding path program 1 times [2021-11-07 02:19:56,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:56,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959982951] [2021-11-07 02:19:56,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:56,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:56,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:56,422 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:56,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:19:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:58,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:58,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:58,602 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 02:19:58,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:58,724 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 02:19:58,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:58,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959982951] [2021-11-07 02:19:58,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959982951] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:58,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:19:58,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:19:58,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163824525] [2021-11-07 02:19:58,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:19:58,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:58,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:19:58,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:19:58,822 INFO L87 Difference]: Start difference. First operand has 562 states, 553 states have (on average 1.4990958408679929) internal successors, (829), 561 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:59,622 INFO L93 Difference]: Finished difference Result 1612 states and 2395 transitions. [2021-11-07 02:19:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:19:59,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 02:19:59,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:59,714 INFO L225 Difference]: With dead ends: 1612 [2021-11-07 02:19:59,715 INFO L226 Difference]: Without dead ends: 1041 [2021-11-07 02:19:59,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:19:59,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2021-11-07 02:20:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1029. [2021-11-07 02:20:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1021 states have (on average 1.3300685602350637) internal successors, (1358), 1028 states have internal predecessors, (1358), 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 02:20:00,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1358 transitions. [2021-11-07 02:20:00,063 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1358 transitions. Word has length 9 [2021-11-07 02:20:00,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:00,066 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 1358 transitions. [2021-11-07 02:20:00,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:00,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1358 transitions. [2021-11-07 02:20:00,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 02:20:00,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:00,076 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:00,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:00,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:00,299 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 02:20:00,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:00,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1464753323, now seen corresponding path program 1 times [2021-11-07 02:20:00,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:00,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561497809] [2021-11-07 02:20:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:00,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:00,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:00,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:00,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:20:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:01,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:20:01,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:01,919 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 02:20:01,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:01,988 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 02:20:01,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:01,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561497809] [2021-11-07 02:20:01,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561497809] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:01,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:01,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:20:01,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799956731] [2021-11-07 02:20:01,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:20:01,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:01,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:20:01,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:20:01,993 INFO L87 Difference]: Start difference. First operand 1029 states and 1358 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 02:20:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:02,122 INFO L93 Difference]: Finished difference Result 3069 states and 4055 transitions. [2021-11-07 02:20:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:20:02,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-07 02:20:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:02,137 INFO L225 Difference]: With dead ends: 3069 [2021-11-07 02:20:02,138 INFO L226 Difference]: Without dead ends: 2044 [2021-11-07 02:20:02,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:20:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2021-11-07 02:20:02,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2024. [2021-11-07 02:20:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 2016 states have (on average 1.3293650793650793) internal successors, (2680), 2023 states have internal predecessors, (2680), 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 02:20:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2680 transitions. [2021-11-07 02:20:02,249 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2680 transitions. Word has length 10 [2021-11-07 02:20:02,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:02,249 INFO L470 AbstractCegarLoop]: Abstraction has 2024 states and 2680 transitions. [2021-11-07 02:20:02,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 02:20:02,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2680 transitions. [2021-11-07 02:20:02,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 02:20:02,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:02,255 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] [2021-11-07 02:20:02,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:02,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:02,469 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 02:20:02,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:02,470 INFO L85 PathProgramCache]: Analyzing trace with hash 843509326, now seen corresponding path program 1 times [2021-11-07 02:20:02,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:02,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638282979] [2021-11-07 02:20:02,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:02,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:02,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:02,474 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:02,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:20:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:03,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:20:03,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:03,922 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 02:20:03,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:04,126 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 02:20:04,127 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:04,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638282979] [2021-11-07 02:20:04,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638282979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:04,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:04,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:20:04,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186064333] [2021-11-07 02:20:04,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:20:04,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:04,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:20:04,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:20:04,130 INFO L87 Difference]: Start difference. First operand 2024 states and 2680 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 02:20:04,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:04,576 INFO L93 Difference]: Finished difference Result 5907 states and 7843 transitions. [2021-11-07 02:20:04,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:20:04,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 35 [2021-11-07 02:20:04,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:04,608 INFO L225 Difference]: With dead ends: 5907 [2021-11-07 02:20:04,609 INFO L226 Difference]: Without dead ends: 3890 [2021-11-07 02:20:04,614 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 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 02:20:04,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2021-11-07 02:20:04,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3856. [2021-11-07 02:20:04,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3848 states have (on average 1.3300415800415801) internal successors, (5118), 3855 states have internal predecessors, (5118), 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 02:20:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 5118 transitions. [2021-11-07 02:20:04,881 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 5118 transitions. Word has length 35 [2021-11-07 02:20:04,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:04,882 INFO L470 AbstractCegarLoop]: Abstraction has 3856 states and 5118 transitions. [2021-11-07 02:20:04,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 02:20:04,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 5118 transitions. [2021-11-07 02:20:04,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 02:20:04,886 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:04,887 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, 1, 1, 1] [2021-11-07 02:20:04,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:05,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:05,110 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 02:20:05,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:05,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1573275523, now seen corresponding path program 1 times [2021-11-07 02:20:05,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:05,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087574606] [2021-11-07 02:20:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:05,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:05,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:05,114 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:05,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:20:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:06,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:20:06,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:06,752 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 02:20:06,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:06,976 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 02:20:06,976 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:06,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087574606] [2021-11-07 02:20:06,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087574606] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:06,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:06,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:20:06,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621636895] [2021-11-07 02:20:06,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:20:06,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:06,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:20:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:20:06,980 INFO L87 Difference]: Start difference. First operand 3856 states and 5118 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 02:20:07,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:07,530 INFO L93 Difference]: Finished difference Result 12319 states and 16585 transitions. [2021-11-07 02:20:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:20:07,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 43 [2021-11-07 02:20:07,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:07,604 INFO L225 Difference]: With dead ends: 12319 [2021-11-07 02:20:07,604 INFO L226 Difference]: Without dead ends: 8468 [2021-11-07 02:20:07,614 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 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 02:20:07,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8468 states. [2021-11-07 02:20:08,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8468 to 8422. [2021-11-07 02:20:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8422 states, 8414 states have (on average 1.354171618730687) internal successors, (11394), 8421 states have internal predecessors, (11394), 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 02:20:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 11394 transitions. [2021-11-07 02:20:08,169 INFO L78 Accepts]: Start accepts. Automaton has 8422 states and 11394 transitions. Word has length 43 [2021-11-07 02:20:08,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:08,170 INFO L470 AbstractCegarLoop]: Abstraction has 8422 states and 11394 transitions. [2021-11-07 02:20:08,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 02:20:08,170 INFO L276 IsEmpty]: Start isEmpty. Operand 8422 states and 11394 transitions. [2021-11-07 02:20:08,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 02:20:08,176 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:08,177 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 02:20:08,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:08,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:08,398 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 02:20:08,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:08,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1853470451, now seen corresponding path program 1 times [2021-11-07 02:20:08,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:08,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589190195] [2021-11-07 02:20:08,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:08,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:08,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:08,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:08,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:20:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:09,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:20:09,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:10,583 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 02:20:10,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2021-11-07 02:20:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:10,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:11,816 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:11,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589190195] [2021-11-07 02:20:11,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589190195] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:11,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:11,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:20:11,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139445064] [2021-11-07 02:20:11,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:20:11,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:11,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:20:11,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:20:11,819 INFO L87 Difference]: Start difference. First operand 8422 states and 11394 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 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 02:20:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:25,285 INFO L93 Difference]: Finished difference Result 23419 states and 31780 transitions. [2021-11-07 02:20:25,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:20:25,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 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 64 [2021-11-07 02:20:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:25,370 INFO L225 Difference]: With dead ends: 23419 [2021-11-07 02:20:25,370 INFO L226 Difference]: Without dead ends: 15004 [2021-11-07 02:20:25,386 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:20:25,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15004 states. [2021-11-07 02:20:26,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15004 to 14546. [2021-11-07 02:20:26,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14546 states, 14538 states have (on average 1.3698583023799698) internal successors, (19915), 14545 states have internal predecessors, (19915), 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 02:20:26,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14546 states to 14546 states and 19915 transitions. [2021-11-07 02:20:26,322 INFO L78 Accepts]: Start accepts. Automaton has 14546 states and 19915 transitions. Word has length 64 [2021-11-07 02:20:26,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:26,323 INFO L470 AbstractCegarLoop]: Abstraction has 14546 states and 19915 transitions. [2021-11-07 02:20:26,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 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 02:20:26,325 INFO L276 IsEmpty]: Start isEmpty. Operand 14546 states and 19915 transitions. [2021-11-07 02:20:26,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 02:20:26,328 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:26,329 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 02:20:26,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:26,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:26,554 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 02:20:26,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:26,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1837951733, now seen corresponding path program 1 times [2021-11-07 02:20:26,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:26,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688660793] [2021-11-07 02:20:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:26,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:26,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:26,561 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:26,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:20:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:27,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:20:27,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:28,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:28,344 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:28,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688660793] [2021-11-07 02:20:28,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688660793] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:28,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:28,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:20:28,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509740934] [2021-11-07 02:20:28,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:20:28,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:28,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:20:28,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:20:28,347 INFO L87 Difference]: Start difference. First operand 14546 states and 19915 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 02:20:33,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:33,754 INFO L93 Difference]: Finished difference Result 29155 states and 39909 transitions. [2021-11-07 02:20:33,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:20:33,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 64 [2021-11-07 02:20:33,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:33,859 INFO L225 Difference]: With dead ends: 29155 [2021-11-07 02:20:33,859 INFO L226 Difference]: Without dead ends: 14586 [2021-11-07 02:20:33,878 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:20:33,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14586 states. [2021-11-07 02:20:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14586 to 14489. [2021-11-07 02:20:34,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14489 states, 14481 states have (on average 1.3704854637110697) internal successors, (19846), 14488 states have internal predecessors, (19846), 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 02:20:34,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14489 states to 14489 states and 19846 transitions. [2021-11-07 02:20:34,687 INFO L78 Accepts]: Start accepts. Automaton has 14489 states and 19846 transitions. Word has length 64 [2021-11-07 02:20:34,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:34,688 INFO L470 AbstractCegarLoop]: Abstraction has 14489 states and 19846 transitions. [2021-11-07 02:20:34,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 02:20:34,688 INFO L276 IsEmpty]: Start isEmpty. Operand 14489 states and 19846 transitions. [2021-11-07 02:20:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 02:20:34,691 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:34,691 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:34,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:34,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:34,912 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 02:20:34,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:34,913 INFO L85 PathProgramCache]: Analyzing trace with hash -133909066, now seen corresponding path program 1 times [2021-11-07 02:20:34,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:34,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208475865] [2021-11-07 02:20:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:34,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:34,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:34,917 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:34,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:20:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:36,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:20:36,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:37,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:37,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:37,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208475865] [2021-11-07 02:20:37,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208475865] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:37,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:37,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:20:37,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554465657] [2021-11-07 02:20:37,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:20:37,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:37,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:20:37,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:20:37,632 INFO L87 Difference]: Start difference. First operand 14489 states and 19846 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 02:20:42,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:42,753 INFO L93 Difference]: Finished difference Result 25111 states and 34263 transitions. [2021-11-07 02:20:42,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:20:42,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 65 [2021-11-07 02:20:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:42,778 INFO L225 Difference]: With dead ends: 25111 [2021-11-07 02:20:42,778 INFO L226 Difference]: Without dead ends: 10593 [2021-11-07 02:20:42,797 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:20:42,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10593 states. [2021-11-07 02:20:43,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10593 to 10160. [2021-11-07 02:20:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10160 states, 10152 states have (on average 1.3646572104018913) internal successors, (13854), 10159 states have internal predecessors, (13854), 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 02:20:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10160 states to 10160 states and 13854 transitions. [2021-11-07 02:20:43,329 INFO L78 Accepts]: Start accepts. Automaton has 10160 states and 13854 transitions. Word has length 65 [2021-11-07 02:20:43,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:43,329 INFO L470 AbstractCegarLoop]: Abstraction has 10160 states and 13854 transitions. [2021-11-07 02:20:43,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 02:20:43,329 INFO L276 IsEmpty]: Start isEmpty. Operand 10160 states and 13854 transitions. [2021-11-07 02:20:43,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 02:20:43,332 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:43,332 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, 1, 1, 1, 1, 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 02:20:43,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:43,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:43,551 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 02:20:43,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:43,551 INFO L85 PathProgramCache]: Analyzing trace with hash -612371812, now seen corresponding path program 1 times [2021-11-07 02:20:43,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:43,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621580697] [2021-11-07 02:20:43,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:43,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:43,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:43,558 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:43,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:20:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:45,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:20:45,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:45,426 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 02:20:45,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:45,843 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 02:20:45,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:45,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621580697] [2021-11-07 02:20:45,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621580697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:45,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:45,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-07 02:20:45,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819107817] [2021-11-07 02:20:45,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:20:45,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:45,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:20:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:20:45,845 INFO L87 Difference]: Start difference. First operand 10160 states and 13854 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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 02:20:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:52,370 INFO L93 Difference]: Finished difference Result 66204 states and 90648 transitions. [2021-11-07 02:20:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 02:20:52,371 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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 68 [2021-11-07 02:20:52,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:52,502 INFO L225 Difference]: With dead ends: 66204 [2021-11-07 02:20:52,502 INFO L226 Difference]: Without dead ends: 57904 [2021-11-07 02:20:52,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-11-07 02:20:52,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57904 states. [2021-11-07 02:20:53,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57904 to 10175. [2021-11-07 02:20:53,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10175 states, 10167 states have (on average 1.3638241369135438) internal successors, (13866), 10174 states have internal predecessors, (13866), 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 02:20:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10175 states to 10175 states and 13866 transitions. [2021-11-07 02:20:53,732 INFO L78 Accepts]: Start accepts. Automaton has 10175 states and 13866 transitions. Word has length 68 [2021-11-07 02:20:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:53,733 INFO L470 AbstractCegarLoop]: Abstraction has 10175 states and 13866 transitions. [2021-11-07 02:20:53,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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 02:20:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 10175 states and 13866 transitions. [2021-11-07 02:20:53,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 02:20:53,735 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:53,736 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, 1, 1, 1, 1, 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 02:20:53,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:53,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:53,950 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 02:20:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:53,951 INFO L85 PathProgramCache]: Analyzing trace with hash -965460194, now seen corresponding path program 1 times [2021-11-07 02:20:53,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:53,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281672113] [2021-11-07 02:20:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:53,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:53,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:53,954 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:53,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:20:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:55,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 02:20:55,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:55,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 02:20:55,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 02:20:55,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-07 02:20:55,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-07 02:20:55,964 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 02:20:55,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:56,385 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 02:20:56,385 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:56,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281672113] [2021-11-07 02:20:56,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281672113] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:56,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:56,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 02:20:56,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874936573] [2021-11-07 02:20:56,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:20:56,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:56,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:20:56,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:20:56,388 INFO L87 Difference]: Start difference. First operand 10175 states and 13866 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 02:21:32,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:32,707 INFO L93 Difference]: Finished difference Result 36746 states and 50060 transitions. [2021-11-07 02:21:32,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:21:32,709 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 68 [2021-11-07 02:21:32,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:32,755 INFO L225 Difference]: With dead ends: 36746 [2021-11-07 02:21:32,755 INFO L226 Difference]: Without dead ends: 36653 [2021-11-07 02:21:32,762 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:21:32,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36653 states. [2021-11-07 02:21:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36653 to 10217. [2021-11-07 02:21:33,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10217 states, 10209 states have (on average 1.3617396414928005) internal successors, (13902), 10216 states have internal predecessors, (13902), 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 02:21:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10217 states to 10217 states and 13902 transitions. [2021-11-07 02:21:33,782 INFO L78 Accepts]: Start accepts. Automaton has 10217 states and 13902 transitions. Word has length 68 [2021-11-07 02:21:33,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:33,783 INFO L470 AbstractCegarLoop]: Abstraction has 10217 states and 13902 transitions. [2021-11-07 02:21:33,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 02:21:33,783 INFO L276 IsEmpty]: Start isEmpty. Operand 10217 states and 13902 transitions. [2021-11-07 02:21:33,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 02:21:33,785 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:33,786 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, 1, 1, 1, 1, 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 02:21:33,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 02:21:34,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:34,010 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 02:21:34,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:34,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1976577444, now seen corresponding path program 1 times [2021-11-07 02:21:34,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:34,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631239844] [2021-11-07 02:21:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:34,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:34,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:34,013 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:34,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:21:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:35,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:21:35,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:35,675 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 02:21:35,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:35,827 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 02:21:35,828 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:35,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631239844] [2021-11-07 02:21:35,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631239844] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:35,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:35,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:21:35,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927411365] [2021-11-07 02:21:35,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:21:35,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:35,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:21:35,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:21:35,830 INFO L87 Difference]: Start difference. First operand 10217 states and 13902 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 02:21:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:41,798 INFO L93 Difference]: Finished difference Result 62809 states and 85562 transitions. [2021-11-07 02:21:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:21:41,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2021-11-07 02:21:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:42,196 INFO L225 Difference]: With dead ends: 62809 [2021-11-07 02:21:42,196 INFO L226 Difference]: Without dead ends: 57637 [2021-11-07 02:21:42,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:21:42,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57637 states. [2021-11-07 02:21:45,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57637 to 10301. [2021-11-07 02:21:45,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10301 states, 10293 states have (on average 1.3587875255027688) internal successors, (13986), 10300 states have internal predecessors, (13986), 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 02:21:45,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10301 states to 10301 states and 13986 transitions. [2021-11-07 02:21:45,168 INFO L78 Accepts]: Start accepts. Automaton has 10301 states and 13986 transitions. Word has length 68 [2021-11-07 02:21:45,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:45,168 INFO L470 AbstractCegarLoop]: Abstraction has 10301 states and 13986 transitions. [2021-11-07 02:21:45,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 02:21:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 10301 states and 13986 transitions. [2021-11-07 02:21:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 02:21:45,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:45,172 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, 1, 1, 1, 1, 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 02:21:45,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:45,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:45,398 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 02:21:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:45,399 INFO L85 PathProgramCache]: Analyzing trace with hash 730041950, now seen corresponding path program 1 times [2021-11-07 02:21:45,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:45,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076009536] [2021-11-07 02:21:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:45,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:45,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:45,403 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:45,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:21:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:47,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:21:47,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:47,985 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 02:21:47,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:48,216 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 02:21:48,216 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:48,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076009536] [2021-11-07 02:21:48,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076009536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:48,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:48,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 02:21:48,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275881803] [2021-11-07 02:21:48,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:21:48,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:48,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:21:48,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:21:48,218 INFO L87 Difference]: Start difference. First operand 10301 states and 13986 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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 02:21:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:55,985 INFO L93 Difference]: Finished difference Result 64919 states and 88440 transitions. [2021-11-07 02:21:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 02:21:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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 68 [2021-11-07 02:21:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:56,076 INFO L225 Difference]: With dead ends: 64919 [2021-11-07 02:21:56,077 INFO L226 Difference]: Without dead ends: 54625 [2021-11-07 02:21:56,093 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:21:56,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54625 states. [2021-11-07 02:21:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54625 to 10259. [2021-11-07 02:21:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10259 states, 10251 states have (on average 1.3569407862647547) internal successors, (13910), 10258 states have internal predecessors, (13910), 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 02:21:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10259 states to 10259 states and 13910 transitions. [2021-11-07 02:21:58,225 INFO L78 Accepts]: Start accepts. Automaton has 10259 states and 13910 transitions. Word has length 68 [2021-11-07 02:21:58,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:58,227 INFO L470 AbstractCegarLoop]: Abstraction has 10259 states and 13910 transitions. [2021-11-07 02:21:58,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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 02:21:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 10259 states and 13910 transitions. [2021-11-07 02:21:58,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 02:21:58,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:58,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:58,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:58,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:58,454 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 02:21:58,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:58,455 INFO L85 PathProgramCache]: Analyzing trace with hash 209926717, now seen corresponding path program 1 times [2021-11-07 02:21:58,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:58,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147364730] [2021-11-07 02:21:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:58,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:58,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:58,459 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:58,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:22:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:00,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:22:00,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:01,334 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 02:22:01,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:02,107 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 02:22:02,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:02,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147364730] [2021-11-07 02:22:02,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147364730] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:02,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:02,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:22:02,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340034230] [2021-11-07 02:22:02,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:22:02,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:02,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:22:02,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:22:02,110 INFO L87 Difference]: Start difference. First operand 10259 states and 13910 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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 02:22:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:12,262 INFO L93 Difference]: Finished difference Result 41310 states and 56136 transitions. [2021-11-07 02:22:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:22:12,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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 73 [2021-11-07 02:22:12,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:12,316 INFO L225 Difference]: With dead ends: 41310 [2021-11-07 02:22:12,316 INFO L226 Difference]: Without dead ends: 36075 [2021-11-07 02:22:12,325 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:22:12,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36075 states. [2021-11-07 02:22:16,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36075 to 30615. [2021-11-07 02:22:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30615 states, 30607 states have (on average 1.3591988760741007) internal successors, (41601), 30614 states have internal predecessors, (41601), 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 02:22:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30615 states to 30615 states and 41601 transitions. [2021-11-07 02:22:16,962 INFO L78 Accepts]: Start accepts. Automaton has 30615 states and 41601 transitions. Word has length 73 [2021-11-07 02:22:16,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:16,962 INFO L470 AbstractCegarLoop]: Abstraction has 30615 states and 41601 transitions. [2021-11-07 02:22:16,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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 02:22:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 30615 states and 41601 transitions. [2021-11-07 02:22:16,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 02:22:16,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:16,965 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-07 02:22:16,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 02:22:17,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:17,178 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 02:22:17,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:17,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2145325504, now seen corresponding path program 1 times [2021-11-07 02:22:17,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:17,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133514846] [2021-11-07 02:22:17,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:17,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:17,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:17,182 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:17,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85d4081-f8f1-4dc4-be56-0b7761153ecd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:22:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:19,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:22:19,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:22:19,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:22:19,747 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:19,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133514846] [2021-11-07 02:22:19,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133514846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:19,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:19,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:22:19,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982512142] [2021-11-07 02:22:19,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:22:19,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:19,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:22:19,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:22:19,749 INFO L87 Difference]: Start difference. First operand 30615 states and 41601 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 02:22:34,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:34,316 INFO L93 Difference]: Finished difference Result 88870 states and 120852 transitions. [2021-11-07 02:22:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:22:34,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 75 [2021-11-07 02:22:34,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:34,449 INFO L225 Difference]: With dead ends: 88870 [2021-11-07 02:22:34,449 INFO L226 Difference]: Without dead ends: 58250 [2021-11-07 02:22:34,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:22:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58250 states.