./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/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_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/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_a2643d21-7e93-47c4-9c85-04beaf6557fe/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 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:04:37,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:04:37,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:04:37,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:04:37,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:04:37,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:04:37,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:04:37,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:04:37,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:04:37,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:04:37,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:04:37,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:04:37,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:04:37,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:04:37,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:04:37,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:04:37,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:04:37,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:04:37,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:04:37,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:04:37,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:04:37,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:04:37,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:04:37,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:04:37,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:04:37,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:04:37,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:04:37,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:04:37,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:04:37,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:04:37,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:04:37,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:04:37,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:04:37,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:04:37,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:04:37,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:04:37,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:04:37,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:04:37,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:04:37,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:04:37,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:04:37,464 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:04:37,513 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:04:37,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:04:37,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:04:37,517 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:04:37,517 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:04:37,517 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:04:37,517 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:04:37,518 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:04:37,524 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:04:37,525 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:04:37,526 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:04:37,526 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:04:37,526 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:04:37,526 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:04:37,527 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:04:37,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:04:37,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:04:37,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:04:37,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:04:37,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:04:37,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:04:37,529 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:04:37,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:04:37,529 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:04:37,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:04:37,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:04:37,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:04:37,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:04:37,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:04:37,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:04:37,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:04:37,532 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:04:37,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:04:37,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:04:37,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:04:37,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:04:37,534 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_a2643d21-7e93-47c4-9c85-04beaf6557fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 [2021-11-07 01:04:37,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:04:37,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:04:37,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:04:37,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:04:37,844 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:04:37,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-07 01:04:37,934 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/data/62649c60f/63fe82f4fd384abcbbc54c875226ed79/FLAGb3566d96b [2021-11-07 01:04:38,758 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:04:38,758 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-07 01:04:38,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/data/62649c60f/63fe82f4fd384abcbbc54c875226ed79/FLAGb3566d96b [2021-11-07 01:04:39,282 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/data/62649c60f/63fe82f4fd384abcbbc54c875226ed79 [2021-11-07 01:04:39,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:04:39,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:04:39,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:04:39,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:04:39,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:04:39,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:39" (1/1) ... [2021-11-07 01:04:39,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f15077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:39, skipping insertion in model container [2021-11-07 01:04:39,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:39" (1/1) ... [2021-11-07 01:04:39,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:04:39,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:04:41,253 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:04:41,258 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:04:41,393 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_a2643d21-7e93-47c4-9c85-04beaf6557fe/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-11-07 01:04:41,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:04:41,554 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:04:41,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e0cbea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:41, skipping insertion in model container [2021-11-07 01:04:41,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:04:41,557 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:04:41,560 INFO L168 Benchmark]: Toolchain (without parser) took 2271.83 ms. Allocated memory was 127.9 MB in the beginning and 163.6 MB in the end (delta: 35.7 MB). Free memory was 78.1 MB in the beginning and 90.9 MB in the end (delta: -12.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:04:41,561 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 127.9 MB. Free memory is still 106.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:04:41,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2268.87 ms. Allocated memory was 127.9 MB in the beginning and 163.6 MB in the end (delta: 35.7 MB). Free memory was 78.0 MB in the beginning and 90.9 MB in the end (delta: -12.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:04:41,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 127.9 MB. Free memory is still 106.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2268.87 ms. Allocated memory was 127.9 MB in the beginning and 163.6 MB in the end (delta: 35.7 MB). Free memory was 78.0 MB in the beginning and 90.9 MB in the end (delta: -12.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6325]: 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_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/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_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/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_a2643d21-7e93-47c4-9c85-04beaf6557fe/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 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:04:43,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:04:43,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:04:43,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:04:43,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:04:43,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:04:43,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:04:43,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:04:43,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:04:43,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:04:43,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:04:43,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:04:43,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:04:43,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:04:43,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:04:43,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:04:43,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:04:43,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:04:43,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:04:43,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:04:43,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:04:43,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:04:43,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:04:43,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:04:43,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:04:43,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:04:43,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:04:43,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:04:43,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:04:43,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:04:43,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:04:43,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:04:43,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:04:43,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:04:43,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:04:43,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:04:43,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:04:43,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:04:43,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:04:43,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:04:43,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:04:43,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:04:43,979 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:04:43,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:04:43,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:04:43,981 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:04:43,981 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:04:43,981 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:04:43,982 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:04:43,982 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:04:43,982 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:04:43,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:04:43,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:04:43,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:04:43,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:04:43,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:04:43,985 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:04:43,985 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:04:43,986 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:04:43,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:04:43,986 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:04:43,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:04:43,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:04:43,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:04:43,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:04:43,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:04:43,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:04:43,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:04:43,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:04:43,988 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:04:43,988 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:04:43,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:04:43,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:04:43,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:04:43,989 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_a2643d21-7e93-47c4-9c85-04beaf6557fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 [2021-11-07 01:04:44,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:04:44,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:04:44,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:04:44,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:04:44,408 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:04:44,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-07 01:04:44,478 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/data/d4b36ecb7/1113e1b51a284026b9669342f02c17dd/FLAG055786334 [2021-11-07 01:04:45,460 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:04:45,461 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-07 01:04:45,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/data/d4b36ecb7/1113e1b51a284026b9669342f02c17dd/FLAG055786334 [2021-11-07 01:04:45,873 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/data/d4b36ecb7/1113e1b51a284026b9669342f02c17dd [2021-11-07 01:04:45,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:04:45,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:04:45,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:04:45,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:04:45,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:04:45,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:45" (1/1) ... [2021-11-07 01:04:45,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744a2f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:45, skipping insertion in model container [2021-11-07 01:04:45,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:45" (1/1) ... [2021-11-07 01:04:45,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:04:46,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:04:48,018 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_a2643d21-7e93-47c4-9c85-04beaf6557fe/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-11-07 01:04:48,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:04:48,166 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:04:48,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:04:48,669 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_a2643d21-7e93-47c4-9c85-04beaf6557fe/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-11-07 01:04:48,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:04:48,699 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:04:48,961 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_a2643d21-7e93-47c4-9c85-04beaf6557fe/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-11-07 01:04:48,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:04:49,216 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:04:49,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:49 WrapperNode [2021-11-07 01:04:49,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:04:49,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:04:49,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:04:49,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:04:49,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:49" (1/1) ... [2021-11-07 01:04:49,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:49" (1/1) ... [2021-11-07 01:04:49,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:04:49,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:04:49,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:04:49,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:04:49,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:49" (1/1) ... [2021-11-07 01:04:49,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:49" (1/1) ... [2021-11-07 01:04:49,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:49" (1/1) ... [2021-11-07 01:04:49,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:49" (1/1) ... [2021-11-07 01:04:50,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:49" (1/1) ... [2021-11-07 01:04:50,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:49" (1/1) ... [2021-11-07 01:04:50,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:49" (1/1) ... [2021-11-07 01:04:50,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:04:50,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:04:50,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:04:50,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:04:50,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:49" (1/1) ... [2021-11-07 01:04:50,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:04:50,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:04:50,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:04:50,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:04:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:04:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:04:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:04:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:04:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:04:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:04:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:04:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:04:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:04:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:04:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:04:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:04:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:04:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:04:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:04:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:04:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:04:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:04:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:04:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:04:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:04:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:04:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:04:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:04:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:04:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:04:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:04:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:04:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:04:50,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:05:40,132 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:05:40,133 INFO L299 CfgBuilder]: Removed 2282 assume(true) statements. [2021-11-07 01:05:40,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:05:40 BoogieIcfgContainer [2021-11-07 01:05:40,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:05:40,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:05:40,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:05:40,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:05:40,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:04:45" (1/3) ... [2021-11-07 01:05:40,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5494d0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:05:40, skipping insertion in model container [2021-11-07 01:05:40,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:49" (2/3) ... [2021-11-07 01:05:40,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5494d0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:05:40, skipping insertion in model container [2021-11-07 01:05:40,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:05:40" (3/3) ... [2021-11-07 01:05:40,147 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-07 01:05:40,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:05:40,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-07 01:05:40,215 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:05:40,221 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:05:40,221 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-07 01:05:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 2084 states, 2071 states have (on average 1.3650410429744084) internal successors, (2827), 2083 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:40,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:05:40,352 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:40,353 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] [2021-11-07 01:05:40,357 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:05:40,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:40,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1766303631, now seen corresponding path program 1 times [2021-11-07 01:05:40,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:40,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185962297] [2021-11-07 01:05:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:40,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:40,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:40,391 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:40,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:05:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:42,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:05:42,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:42,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:43,017 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:43,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185962297] [2021-11-07 01:05:43,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185962297] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:43,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:05:43,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:05:43,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941815240] [2021-11-07 01:05:43,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:05:43,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:43,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:05:43,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:05:43,056 INFO L87 Difference]: Start difference. First operand has 2084 states, 2071 states have (on average 1.3650410429744084) internal successors, (2827), 2083 states have internal predecessors, (2827), 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 2 states, 2 states have (on average 29.5) internal successors, (59), 2 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 01:05:43,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:43,199 INFO L93 Difference]: Finished difference Result 4164 states and 5649 transitions. [2021-11-07 01:05:43,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:05:43,200 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 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 59 [2021-11-07 01:05:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:43,232 INFO L225 Difference]: With dead ends: 4164 [2021-11-07 01:05:43,232 INFO L226 Difference]: Without dead ends: 2025 [2021-11-07 01:05:43,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:05:43,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2021-11-07 01:05:43,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2025. [2021-11-07 01:05:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2025 states, 2013 states have (on average 1.3288623944361648) internal successors, (2675), 2024 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:43,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 2675 transitions. [2021-11-07 01:05:43,387 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 2675 transitions. Word has length 59 [2021-11-07 01:05:43,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:43,388 INFO L470 AbstractCegarLoop]: Abstraction has 2025 states and 2675 transitions. [2021-11-07 01:05:43,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 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 01:05:43,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 2675 transitions. [2021-11-07 01:05:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:05:43,395 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:43,395 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] [2021-11-07 01:05:43,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:43,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:05:43,611 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:05:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:43,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1863285317, now seen corresponding path program 1 times [2021-11-07 01:05:43,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:43,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784694469] [2021-11-07 01:05:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:43,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:43,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:43,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:43,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:05:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:45,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:05:45,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:45,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:46,111 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:46,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784694469] [2021-11-07 01:05:46,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784694469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:46,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:05:46,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:05:46,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937233132] [2021-11-07 01:05:46,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:05:46,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:46,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:05:46,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:05:46,116 INFO L87 Difference]: Start difference. First operand 2025 states and 2675 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:46,331 INFO L93 Difference]: Finished difference Result 4027 states and 5331 transitions. [2021-11-07 01:05:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:05:46,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 59 [2021-11-07 01:05:46,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:46,345 INFO L225 Difference]: With dead ends: 4027 [2021-11-07 01:05:46,345 INFO L226 Difference]: Without dead ends: 2030 [2021-11-07 01:05:46,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:05:46,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2021-11-07 01:05:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 2030. [2021-11-07 01:05:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 2018 states have (on average 1.32804757185332) internal successors, (2680), 2029 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 01:05:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2680 transitions. [2021-11-07 01:05:46,413 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2680 transitions. Word has length 59 [2021-11-07 01:05:46,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:46,414 INFO L470 AbstractCegarLoop]: Abstraction has 2030 states and 2680 transitions. [2021-11-07 01:05:46,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:46,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2680 transitions. [2021-11-07 01:05:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:05:46,417 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:46,418 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:46,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:46,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:05:46,636 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:05:46,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:46,637 INFO L85 PathProgramCache]: Analyzing trace with hash 831598597, now seen corresponding path program 1 times [2021-11-07 01:05:46,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:46,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552248203] [2021-11-07 01:05:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:46,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:46,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:46,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:46,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:05:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:48,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:05:48,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:48,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:49,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:49,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552248203] [2021-11-07 01:05:49,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552248203] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:49,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [610328472] [2021-11-07 01:05:49,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:49,402 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:49,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:05:49,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:05:49,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:05:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:50,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:05:50,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:51,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:51,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [610328472] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:51,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:05:51,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:05:51,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447006602] [2021-11-07 01:05:51,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:05:51,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:51,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:05:51,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:05:51,481 INFO L87 Difference]: Start difference. First operand 2030 states and 2680 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:52,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:52,007 INFO L93 Difference]: Finished difference Result 7781 states and 10271 transitions. [2021-11-07 01:05:52,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:05:52,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 63 [2021-11-07 01:05:52,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:52,043 INFO L225 Difference]: With dead ends: 7781 [2021-11-07 01:05:52,043 INFO L226 Difference]: Without dead ends: 5788 [2021-11-07 01:05:52,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:05:52,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2021-11-07 01:05:52,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 3021. [2021-11-07 01:05:52,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3021 states, 3009 states have (on average 1.3246925888999668) internal successors, (3986), 3020 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:52,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3021 states to 3021 states and 3986 transitions. [2021-11-07 01:05:52,195 INFO L78 Accepts]: Start accepts. Automaton has 3021 states and 3986 transitions. Word has length 63 [2021-11-07 01:05:52,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:52,198 INFO L470 AbstractCegarLoop]: Abstraction has 3021 states and 3986 transitions. [2021-11-07 01:05:52,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:52,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3021 states and 3986 transitions. [2021-11-07 01:05:52,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:05:52,205 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:52,205 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:52,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:52,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-07 01:05:52,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:52,627 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:05:52,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:52,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2078449491, now seen corresponding path program 1 times [2021-11-07 01:05:52,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:52,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794830364] [2021-11-07 01:05:52,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:52,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:52,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:52,634 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:52,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:05:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:54,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:05:54,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:54,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:54,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:55,379 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:55,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794830364] [2021-11-07 01:05:55,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794830364] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:55,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1368064223] [2021-11-07 01:05:55,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:55,380 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:55,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:05:55,388 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:05:55,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:05:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:56,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:05:56,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:56,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:57,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1368064223] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:57,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:05:57,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:05:57,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753769805] [2021-11-07 01:05:57,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:05:57,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:57,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:05:57,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:05:57,318 INFO L87 Difference]: Start difference. First operand 3021 states and 3986 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 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 01:05:58,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:58,018 INFO L93 Difference]: Finished difference Result 12736 states and 16803 transitions. [2021-11-07 01:05:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:05:58,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 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 01:05:58,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:58,075 INFO L225 Difference]: With dead ends: 12736 [2021-11-07 01:05:58,076 INFO L226 Difference]: Without dead ends: 9752 [2021-11-07 01:05:58,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:05:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9752 states. [2021-11-07 01:05:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9752 to 5738. [2021-11-07 01:05:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5738 states, 5726 states have (on average 1.3251833740831296) internal successors, (7588), 5737 states have internal predecessors, (7588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5738 states to 5738 states and 7588 transitions. [2021-11-07 01:05:58,399 INFO L78 Accepts]: Start accepts. Automaton has 5738 states and 7588 transitions. Word has length 64 [2021-11-07 01:05:58,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:58,400 INFO L470 AbstractCegarLoop]: Abstraction has 5738 states and 7588 transitions. [2021-11-07 01:05:58,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 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 01:05:58,400 INFO L276 IsEmpty]: Start isEmpty. Operand 5738 states and 7588 transitions. [2021-11-07 01:05:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:05:58,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:58,405 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:58,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:58,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:58,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:58,819 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:05:58,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:58,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2095626156, now seen corresponding path program 1 times [2021-11-07 01:05:58,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:58,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166810206] [2021-11-07 01:05:58,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:58,823 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:58,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:58,824 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:58,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:06:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:00,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:06:00,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:06:01,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:06:01,343 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:01,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166810206] [2021-11-07 01:06:01,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166810206] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:01,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1635307642] [2021-11-07 01:06:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:01,343 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:01,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:01,344 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:01,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:06:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:02,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:06:02,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:06:02,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:06:03,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1635307642] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:03,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:06:03,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:06:03,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297238362] [2021-11-07 01:06:03,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:03,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:03,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:03,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:06:03,241 INFO L87 Difference]: Start difference. First operand 5738 states and 7588 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:04,274 INFO L93 Difference]: Finished difference Result 24620 states and 32520 transitions. [2021-11-07 01:06:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:06:04,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 01:06:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:04,376 INFO L225 Difference]: With dead ends: 24620 [2021-11-07 01:06:04,380 INFO L226 Difference]: Without dead ends: 18919 [2021-11-07 01:06:04,393 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:06:04,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18919 states. [2021-11-07 01:06:04,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18919 to 10932. [2021-11-07 01:06:05,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10932 states, 10920 states have (on average 1.3247252747252747) internal successors, (14466), 10931 states have internal predecessors, (14466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:05,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10932 states to 10932 states and 14466 transitions. [2021-11-07 01:06:05,075 INFO L78 Accepts]: Start accepts. Automaton has 10932 states and 14466 transitions. Word has length 65 [2021-11-07 01:06:05,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:05,075 INFO L470 AbstractCegarLoop]: Abstraction has 10932 states and 14466 transitions. [2021-11-07 01:06:05,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:05,076 INFO L276 IsEmpty]: Start isEmpty. Operand 10932 states and 14466 transitions. [2021-11-07 01:06:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:06:05,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:05,080 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:05,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:05,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:05,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:05,504 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:06:05,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:05,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1309416202, now seen corresponding path program 1 times [2021-11-07 01:06:05,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:05,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473213788] [2021-11-07 01:06:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:05,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:05,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:05,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:05,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:06:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:07,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:06:07,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:06:07,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:06:08,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:08,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473213788] [2021-11-07 01:06:08,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473213788] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:08,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1776306524] [2021-11-07 01:06:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:08,152 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:08,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:08,155 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:08,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:06:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:09,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:06:09,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:06:09,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:06:09,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1776306524] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:09,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:06:09,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:06:09,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287084235] [2021-11-07 01:06:09,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:06:09,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:09,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:06:09,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:06:09,780 INFO L87 Difference]: Start difference. First operand 10932 states and 14466 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:10,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:10,677 INFO L93 Difference]: Finished difference Result 26915 states and 35745 transitions. [2021-11-07 01:06:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:06:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 01:06:10,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:10,720 INFO L225 Difference]: With dead ends: 26915 [2021-11-07 01:06:10,721 INFO L226 Difference]: Without dead ends: 16020 [2021-11-07 01:06:10,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:06:10,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16020 states. [2021-11-07 01:06:11,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16020 to 15228. [2021-11-07 01:06:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15228 states, 15216 states have (on average 1.3310988433228181) internal successors, (20254), 15227 states have internal predecessors, (20254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:11,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15228 states to 15228 states and 20254 transitions. [2021-11-07 01:06:11,359 INFO L78 Accepts]: Start accepts. Automaton has 15228 states and 20254 transitions. Word has length 65 [2021-11-07 01:06:11,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:11,360 INFO L470 AbstractCegarLoop]: Abstraction has 15228 states and 20254 transitions. [2021-11-07 01:06:11,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:11,360 INFO L276 IsEmpty]: Start isEmpty. Operand 15228 states and 20254 transitions. [2021-11-07 01:06:11,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:06:11,362 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:11,362 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:11,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:11,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:11,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:11,775 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:06:11,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:11,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1666865372, now seen corresponding path program 1 times [2021-11-07 01:06:11,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:11,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416128339] [2021-11-07 01:06:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:11,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:11,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:11,780 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:11,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:06:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:13,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:06:13,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:06:14,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:06:14,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:14,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416128339] [2021-11-07 01:06:14,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416128339] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:14,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1170164928] [2021-11-07 01:06:14,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:14,580 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:14,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:14,581 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:14,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:06:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:15,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:06:15,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:06:16,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:06:16,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1170164928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:16,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:06:16,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:06:16,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294340415] [2021-11-07 01:06:16,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:16,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:16,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:16,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:06:16,615 INFO L87 Difference]: Start difference. First operand 15228 states and 20254 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:18,057 INFO L93 Difference]: Finished difference Result 62332 states and 82720 transitions. [2021-11-07 01:06:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:06:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 66 [2021-11-07 01:06:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:18,172 INFO L225 Difference]: With dead ends: 62332 [2021-11-07 01:06:18,172 INFO L226 Difference]: Without dead ends: 47141 [2021-11-07 01:06:18,205 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:06:18,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47141 states. [2021-11-07 01:06:19,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47141 to 28467. [2021-11-07 01:06:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28467 states, 28455 states have (on average 1.3298190124758391) internal successors, (37840), 28466 states have internal predecessors, (37840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28467 states to 28467 states and 37840 transitions. [2021-11-07 01:06:19,722 INFO L78 Accepts]: Start accepts. Automaton has 28467 states and 37840 transitions. Word has length 66 [2021-11-07 01:06:19,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:19,722 INFO L470 AbstractCegarLoop]: Abstraction has 28467 states and 37840 transitions. [2021-11-07 01:06:19,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:19,723 INFO L276 IsEmpty]: Start isEmpty. Operand 28467 states and 37840 transitions. [2021-11-07 01:06:19,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:06:19,727 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:19,727 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:19,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:19,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:20,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:20,143 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:06:20,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:20,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1804149942, now seen corresponding path program 1 times [2021-11-07 01:06:20,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:20,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104763049] [2021-11-07 01:06:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:20,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:20,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:20,146 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:20,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:06:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:22,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:06:22,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:06:22,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:06:23,030 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:23,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104763049] [2021-11-07 01:06:23,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104763049] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:23,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1869398240] [2021-11-07 01:06:23,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:23,031 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:23,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:23,032 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:23,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:06:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:24,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:06:24,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:06:24,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:06:25,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1869398240] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:25,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:06:25,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-07 01:06:25,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688006747] [2021-11-07 01:06:25,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:06:25,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:25,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:06:25,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:06:25,222 INFO L87 Difference]: Start difference. First operand 28467 states and 37840 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:27,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:27,580 INFO L93 Difference]: Finished difference Result 90867 states and 120628 transitions. [2021-11-07 01:06:27,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:06:27,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 72 [2021-11-07 01:06:27,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:27,717 INFO L225 Difference]: With dead ends: 90867 [2021-11-07 01:06:27,717 INFO L226 Difference]: Without dead ends: 62437 [2021-11-07 01:06:27,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:06:27,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62437 states. [2021-11-07 01:06:29,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62437 to 28547. [2021-11-07 01:06:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28547 states, 28535 states have (on average 1.328894340283862) internal successors, (37920), 28546 states have internal predecessors, (37920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:29,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28547 states to 28547 states and 37920 transitions. [2021-11-07 01:06:29,128 INFO L78 Accepts]: Start accepts. Automaton has 28547 states and 37920 transitions. Word has length 72 [2021-11-07 01:06:29,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:29,128 INFO L470 AbstractCegarLoop]: Abstraction has 28547 states and 37920 transitions. [2021-11-07 01:06:29,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:29,128 INFO L276 IsEmpty]: Start isEmpty. Operand 28547 states and 37920 transitions. [2021-11-07 01:06:29,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-07 01:06:29,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:29,132 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:29,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-07 01:06:29,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:29,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:29,544 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:06:29,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:29,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1084130789, now seen corresponding path program 1 times [2021-11-07 01:06:29,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:29,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352452401] [2021-11-07 01:06:29,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:29,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:29,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:29,547 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:29,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:06:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:32,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:06:32,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:06:32,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:06:33,442 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:33,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352452401] [2021-11-07 01:06:33,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352452401] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:33,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1936628397] [2021-11-07 01:06:33,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:33,443 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:33,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:33,444 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:33,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:06:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:35,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:06:35,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:06:35,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:36,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:06:36,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1936628397] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:36,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:06:36,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:06:36,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606858510] [2021-11-07 01:06:36,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:06:36,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:36,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:06:36,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:06:36,263 INFO L87 Difference]: Start difference. First operand 28547 states and 37920 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:38,102 INFO L93 Difference]: Finished difference Result 81087 states and 107906 transitions. [2021-11-07 01:06:38,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:06:38,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 160 [2021-11-07 01:06:38,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:38,200 INFO L225 Difference]: With dead ends: 81087 [2021-11-07 01:06:38,200 INFO L226 Difference]: Without dead ends: 52577 [2021-11-07 01:06:38,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:06:38,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52577 states. [2021-11-07 01:06:40,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52577 to 52521. [2021-11-07 01:06:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52521 states, 52509 states have (on average 1.3321335390123599) internal successors, (69949), 52520 states have internal predecessors, (69949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52521 states to 52521 states and 69949 transitions. [2021-11-07 01:06:40,616 INFO L78 Accepts]: Start accepts. Automaton has 52521 states and 69949 transitions. Word has length 160 [2021-11-07 01:06:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:40,616 INFO L470 AbstractCegarLoop]: Abstraction has 52521 states and 69949 transitions. [2021-11-07 01:06:40,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 52521 states and 69949 transitions. [2021-11-07 01:06:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-07 01:06:40,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:40,622 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:40,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:40,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:41,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:41,043 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:06:41,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1766752753, now seen corresponding path program 1 times [2021-11-07 01:06:41,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:41,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155364571] [2021-11-07 01:06:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:41,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:41,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:41,047 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:41,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:06:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:43,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 2026 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:06:43,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:06:44,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:06:45,096 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:45,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155364571] [2021-11-07 01:06:45,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155364571] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:45,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [330823961] [2021-11-07 01:06:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:45,097 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:45,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:45,098 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:45,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:06:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:47,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 2026 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:06:47,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:06:47,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:06:48,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [330823961] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:48,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:06:48,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:06:48,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292628640] [2021-11-07 01:06:48,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:06:48,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:48,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:06:48,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:06:48,045 INFO L87 Difference]: Start difference. First operand 52521 states and 69949 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:50,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:50,707 INFO L93 Difference]: Finished difference Result 105005 states and 139859 transitions. [2021-11-07 01:06:50,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:06:50,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-11-07 01:06:50,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:50,805 INFO L225 Difference]: With dead ends: 105005 [2021-11-07 01:06:50,805 INFO L226 Difference]: Without dead ends: 52521 [2021-11-07 01:06:50,847 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:06:50,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52521 states. [2021-11-07 01:06:53,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52521 to 52521. [2021-11-07 01:06:53,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52521 states, 52509 states have (on average 1.3315241196747225) internal successors, (69917), 52520 states have internal predecessors, (69917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52521 states to 52521 states and 69917 transitions. [2021-11-07 01:06:53,355 INFO L78 Accepts]: Start accepts. Automaton has 52521 states and 69917 transitions. Word has length 179 [2021-11-07 01:06:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:53,356 INFO L470 AbstractCegarLoop]: Abstraction has 52521 states and 69917 transitions. [2021-11-07 01:06:53,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:53,356 INFO L276 IsEmpty]: Start isEmpty. Operand 52521 states and 69917 transitions. [2021-11-07 01:06:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-07 01:06:53,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:53,361 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:53,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:53,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:53,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:53,776 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:06:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:53,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1104683941, now seen corresponding path program 1 times [2021-11-07 01:06:53,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:53,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870573412] [2021-11-07 01:06:53,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:53,779 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:53,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:53,780 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:53,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:06:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:56,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:06:56,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:06:57,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:06:58,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:58,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870573412] [2021-11-07 01:06:58,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870573412] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:58,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [583789938] [2021-11-07 01:06:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:58,555 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:58,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:58,560 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:58,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:07:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:00,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:07:00,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:07:01,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:07:02,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [583789938] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:02,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:07:02,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:07:02,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954795107] [2021-11-07 01:07:02,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:07:02,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:02,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:07:02,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:07:02,524 INFO L87 Difference]: Start difference. First operand 52521 states and 69917 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:07,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:07,020 INFO L93 Difference]: Finished difference Result 157441 states and 209593 transitions. [2021-11-07 01:07:07,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:07:07,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 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 192 [2021-11-07 01:07:07,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:07,333 INFO L225 Difference]: With dead ends: 157441 [2021-11-07 01:07:07,333 INFO L226 Difference]: Without dead ends: 104957 [2021-11-07 01:07:07,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:07:07,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104957 states. [2021-11-07 01:07:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104957 to 104917. [2021-11-07 01:07:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104917 states, 104905 states have (on average 1.3314046041656737) internal successors, (139671), 104916 states have internal predecessors, (139671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104917 states to 104917 states and 139671 transitions. [2021-11-07 01:07:12,639 INFO L78 Accepts]: Start accepts. Automaton has 104917 states and 139671 transitions. Word has length 192 [2021-11-07 01:07:12,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:12,639 INFO L470 AbstractCegarLoop]: Abstraction has 104917 states and 139671 transitions. [2021-11-07 01:07:12,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:12,640 INFO L276 IsEmpty]: Start isEmpty. Operand 104917 states and 139671 transitions. [2021-11-07 01:07:12,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-07 01:07:12,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:12,648 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:12,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:12,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:13,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:13,064 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:07:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:13,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1432305376, now seen corresponding path program 1 times [2021-11-07 01:07:13,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:13,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029306552] [2021-11-07 01:07:13,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:13,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:13,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:13,071 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:13,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:07:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:16,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 2112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:07:16,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:07:16,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:07:17,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:17,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029306552] [2021-11-07 01:07:17,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029306552] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:07:17,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1132514890] [2021-11-07 01:07:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:17,544 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:07:17,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:07:17,545 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:07:17,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2643d21-7e93-47c4-9c85-04beaf6557fe/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 01:07:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:19,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 2112 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:07:19,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:07:21,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:21,855 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:07:21,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1132514890] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:21,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:07:21,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:07:21,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325824245] [2021-11-07 01:07:21,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:07:21,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:07:21,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:07:21,857 INFO L87 Difference]: Start difference. First operand 104917 states and 139671 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 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)