./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.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_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/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_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/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_f2c27f0e-1299-466e-a093-9ff4bedee45b/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 1dadd209c6e3ebdaafa15f295f1ec8ec38d24c8a1f9b514f05808fa8c7c3e21c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:07:51,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:07:51,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:07:51,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:07:51,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:07:51,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:07:51,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:07:51,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:07:51,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:07:51,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:07:51,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:07:51,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:07:51,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:07:51,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:07:51,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:07:51,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:07:51,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:07:51,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:07:51,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:07:51,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:07:51,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:07:51,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:07:51,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:07:51,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:07:51,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:07:51,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:07:51,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:07:51,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:07:51,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:07:51,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:07:51,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:07:51,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:07:51,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:07:51,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:07:51,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:07:51,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:07:51,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:07:51,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:07:51,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:07:51,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:07:51,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:07:51,510 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:07:51,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:07:51,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:07:51,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:07:51,544 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:07:51,544 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:07:51,544 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:07:51,545 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:07:51,545 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:07:51,545 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:07:51,545 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:07:51,545 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:07:51,546 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:07:51,546 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:07:51,546 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:07:51,546 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:07:51,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:07:51,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:07:51,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:07:51,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:07:51,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:07:51,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:07:51,548 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:07:51,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:07:51,549 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:07:51,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:07:51,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:07:51,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:07:51,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:07:51,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:07:51,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:07:51,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:07:51,551 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:07:51,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:07:51,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:07:51,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:07:51,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:07:51,554 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_f2c27f0e-1299-466e-a093-9ff4bedee45b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dadd209c6e3ebdaafa15f295f1ec8ec38d24c8a1f9b514f05808fa8c7c3e21c [2021-11-07 02:07:51,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:07:51,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:07:51,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:07:51,875 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:07:51,876 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:07:51,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-07 02:07:51,964 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/data/8cd8a669d/cc5011fb3d114de3bead6f285c935221/FLAG5e3094a9d [2021-11-07 02:07:52,914 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:07:52,915 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-07 02:07:52,995 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/data/8cd8a669d/cc5011fb3d114de3bead6f285c935221/FLAG5e3094a9d [2021-11-07 02:07:53,327 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/data/8cd8a669d/cc5011fb3d114de3bead6f285c935221 [2021-11-07 02:07:53,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:07:53,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:07:53,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:07:53,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:07:53,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:07:53,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:53" (1/1) ... [2021-11-07 02:07:53,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368946f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:53, skipping insertion in model container [2021-11-07 02:07:53,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:53" (1/1) ... [2021-11-07 02:07:53,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:07:53,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:07:54,846 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_f2c27f0e-1299-466e-a093-9ff4bedee45b/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2021-11-07 02:07:55,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:07:55,896 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:07:55,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1bc7c395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:55, skipping insertion in model container [2021-11-07 02:07:55,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:07:55,898 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:07:55,901 INFO L168 Benchmark]: Toolchain (without parser) took 2567.71 ms. Allocated memory was 115.3 MB in the beginning and 148.9 MB in the end (delta: 33.6 MB). Free memory was 88.3 MB in the beginning and 76.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:07:55,902 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 115.3 MB. Free memory was 91.8 MB in the beginning and 91.7 MB in the end (delta: 53.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:07:55,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2564.75 ms. Allocated memory was 115.3 MB in the beginning and 148.9 MB in the end (delta: 33.6 MB). Free memory was 88.3 MB in the beginning and 76.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:07:55,906 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 115.3 MB. Free memory was 91.8 MB in the beginning and 91.7 MB in the end (delta: 53.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2564.75 ms. Allocated memory was 115.3 MB in the beginning and 148.9 MB in the end (delta: 33.6 MB). Free memory was 88.3 MB in the beginning and 76.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4415]: 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_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/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_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/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_f2c27f0e-1299-466e-a093-9ff4bedee45b/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 1dadd209c6e3ebdaafa15f295f1ec8ec38d24c8a1f9b514f05808fa8c7c3e21c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:07:58,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:07:58,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:07:58,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:07:58,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:07:58,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:07:58,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:07:58,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:07:58,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:07:58,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:07:58,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:07:58,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:07:58,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:07:58,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:07:58,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:07:58,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:07:58,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:07:58,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:07:58,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:07:58,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:07:58,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:07:58,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:07:58,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:07:58,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:07:58,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:07:58,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:07:58,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:07:58,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:07:58,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:07:58,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:07:58,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:07:58,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:07:58,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:07:58,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:07:58,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:07:58,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:07:58,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:07:58,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:07:58,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:07:58,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:07:58,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:07:58,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:07:58,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:07:58,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:07:58,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:07:58,523 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:07:58,523 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:07:58,523 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:07:58,524 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:07:58,524 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:07:58,524 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:07:58,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:07:58,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:07:58,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:07:58,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:07:58,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:07:58,528 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:07:58,528 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:07:58,528 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:07:58,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:07:58,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:07:58,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:07:58,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:07:58,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:07:58,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:07:58,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:07:58,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:07:58,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:07:58,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:07:58,531 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:07:58,531 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:07:58,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:07:58,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:07:58,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:07:58,532 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_f2c27f0e-1299-466e-a093-9ff4bedee45b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dadd209c6e3ebdaafa15f295f1ec8ec38d24c8a1f9b514f05808fa8c7c3e21c [2021-11-07 02:07:58,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:07:58,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:07:58,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:07:58,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:07:58,995 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:07:58,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-07 02:07:59,067 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/data/ad64f05cb/07e1dde968fd4502b90f008eb4b9a3aa/FLAGa1c62b5f8 [2021-11-07 02:08:00,050 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:08:00,053 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-07 02:08:00,099 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/data/ad64f05cb/07e1dde968fd4502b90f008eb4b9a3aa/FLAGa1c62b5f8 [2021-11-07 02:08:00,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/data/ad64f05cb/07e1dde968fd4502b90f008eb4b9a3aa [2021-11-07 02:08:00,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:08:00,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:08:00,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:00,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:08:00,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:08:00,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:00" (1/1) ... [2021-11-07 02:08:00,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350ac77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:00, skipping insertion in model container [2021-11-07 02:08:00,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:00" (1/1) ... [2021-11-07 02:08:00,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:08:00,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:01,842 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_f2c27f0e-1299-466e-a093-9ff4bedee45b/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2021-11-07 02:08:02,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:02,663 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:08:02,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:02,843 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_f2c27f0e-1299-466e-a093-9ff4bedee45b/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2021-11-07 02:08:03,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:03,146 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:08:03,278 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_f2c27f0e-1299-466e-a093-9ff4bedee45b/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2021-11-07 02:08:03,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:03,822 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:08:03,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:03 WrapperNode [2021-11-07 02:08:03,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:03,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:08:03,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:08:03,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:08:03,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:03" (1/1) ... [2021-11-07 02:08:03,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:03" (1/1) ... [2021-11-07 02:08:04,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:08:04,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:08:04,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:08:04,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:08:04,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:03" (1/1) ... [2021-11-07 02:08:04,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:03" (1/1) ... [2021-11-07 02:08:04,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:03" (1/1) ... [2021-11-07 02:08:04,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:03" (1/1) ... [2021-11-07 02:08:04,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:03" (1/1) ... [2021-11-07 02:08:05,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:03" (1/1) ... [2021-11-07 02:08:05,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:03" (1/1) ... [2021-11-07 02:08:05,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:08:05,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:08:05,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:08:05,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:08:05,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:03" (1/1) ... [2021-11-07 02:08:05,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:05,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:05,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:08:05,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:08:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:08:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:08:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 02:08:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:08:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:08:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:08:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:08:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-07 02:08:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-07 02:08:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:08:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2021-11-07 02:08:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2021-11-07 02:08:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:08:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-11-07 02:08:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-11-07 02:08:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:08:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:08:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:08:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:08:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:08:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:08:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:08:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:08:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:08:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:08:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf1 [2021-11-07 02:08:05,366 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf1 [2021-11-07 02:08:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf0 [2021-11-07 02:08:05,366 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf0 [2021-11-07 02:08:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:08:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:08:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:08:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:08:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:08:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:08:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 02:08:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:08:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:08:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:08:05,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:08:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:08:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:08:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:08:05,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:12:49,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:12:49,660 INFO L299 CfgBuilder]: Removed 1883 assume(true) statements. [2021-11-07 02:12:49,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:12:49 BoogieIcfgContainer [2021-11-07 02:12:49,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:12:49,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:12:49,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:12:49,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:12:49,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:08:00" (1/3) ... [2021-11-07 02:12:49,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e89cdf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:12:49, skipping insertion in model container [2021-11-07 02:12:49,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:03" (2/3) ... [2021-11-07 02:12:49,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e89cdf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:12:49, skipping insertion in model container [2021-11-07 02:12:49,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:12:49" (3/3) ... [2021-11-07 02:12:49,677 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-07 02:12:49,683 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:12:49,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 02:12:49,755 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:12:49,761 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:12:49,762 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 02:12:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 2464 states, 2431 states have (on average 1.4619498148909913) internal successors, (3554), 2438 states have internal predecessors, (3554), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-07 02:12:49,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 02:12:49,837 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:49,838 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:49,838 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:12:49,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:49,844 INFO L85 PathProgramCache]: Analyzing trace with hash 351109344, now seen corresponding path program 1 times [2021-11-07 02:12:49,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:49,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834734045] [2021-11-07 02:12:49,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:49,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:49,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:49,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:49,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:13:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:03,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 2853 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:13:03,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:13:03,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:13:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:13:04,062 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:13:04,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834734045] [2021-11-07 02:13:04,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834734045] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:13:04,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:13:04,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:13:04,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110656400] [2021-11-07 02:13:04,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:13:04,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:13:04,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:13:04,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:13:04,104 INFO L87 Difference]: Start difference. First operand has 2464 states, 2431 states have (on average 1.4619498148909913) internal successors, (3554), 2438 states have internal predecessors, (3554), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:13:04,377 INFO L93 Difference]: Finished difference Result 4925 states and 7189 transitions. [2021-11-07 02:13:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:13:04,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-07 02:13:04,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:13:04,423 INFO L225 Difference]: With dead ends: 4925 [2021-11-07 02:13:04,423 INFO L226 Difference]: Without dead ends: 2451 [2021-11-07 02:13:04,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:13:04,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2021-11-07 02:13:04,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2451. [2021-11-07 02:13:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 2419 states have (on average 1.4381976023150063) internal successors, (3479), 2425 states have internal predecessors, (3479), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-07 02:13:04,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3521 transitions. [2021-11-07 02:13:04,660 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3521 transitions. Word has length 35 [2021-11-07 02:13:04,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:13:04,661 INFO L470 AbstractCegarLoop]: Abstraction has 2451 states and 3521 transitions. [2021-11-07 02:13:04,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:04,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3521 transitions. [2021-11-07 02:13:04,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 02:13:04,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:13:04,672 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:13:04,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:13:04,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:13:04,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:13:04,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:13:04,887 INFO L85 PathProgramCache]: Analyzing trace with hash 61611392, now seen corresponding path program 1 times [2021-11-07 02:13:04,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:13:04,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996199458] [2021-11-07 02:13:04,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:13:04,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:13:04,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:13:04,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:13:04,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:13:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:19,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 2863 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:13:19,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:13:19,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:13:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:13:20,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:13:20,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996199458] [2021-11-07 02:13:20,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996199458] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:13:20,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [223949828] [2021-11-07 02:13:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:13:20,221 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:13:20,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:13:20,224 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:13:20,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 02:13:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:24,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 2863 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:13:24,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:13:24,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:13:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:13:24,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [223949828] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:13:24,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:13:24,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:13:24,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410565944] [2021-11-07 02:13:24,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:13:24,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:13:24,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:13:24,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:13:24,772 INFO L87 Difference]: Start difference. First operand 2451 states and 3521 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:28,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:13:28,567 INFO L93 Difference]: Finished difference Result 9506 states and 13736 transitions. [2021-11-07 02:13:28,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:13:28,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 02:13:28,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:13:28,629 INFO L225 Difference]: With dead ends: 9506 [2021-11-07 02:13:28,629 INFO L226 Difference]: Without dead ends: 7107 [2021-11-07 02:13:28,642 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:13:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7107 states. [2021-11-07 02:13:28,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7107 to 7107. [2021-11-07 02:13:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7107 states, 7021 states have (on average 1.445235721407207) internal successors, (10147), 7031 states have internal predecessors, (10147), 63 states have call successors, (63), 18 states have call predecessors, (63), 18 states have return successors, (63), 60 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-07 02:13:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7107 states to 7107 states and 10273 transitions. [2021-11-07 02:13:29,050 INFO L78 Accepts]: Start accepts. Automaton has 7107 states and 10273 transitions. Word has length 37 [2021-11-07 02:13:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:13:29,054 INFO L470 AbstractCegarLoop]: Abstraction has 7107 states and 10273 transitions. [2021-11-07 02:13:29,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 7107 states and 10273 transitions. [2021-11-07 02:13:29,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 02:13:29,060 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:13:29,061 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:13:29,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:13:29,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:13:29,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:13:29,487 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:13:29,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:13:29,488 INFO L85 PathProgramCache]: Analyzing trace with hash 118946833, now seen corresponding path program 1 times [2021-11-07 02:13:29,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:13:29,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123339245] [2021-11-07 02:13:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:13:29,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:13:29,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:13:29,498 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:13:29,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:13:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:44,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 2897 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:13:44,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:13:44,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:13:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:13:45,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:13:45,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123339245] [2021-11-07 02:13:45,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123339245] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:13:45,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1729538024] [2021-11-07 02:13:45,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:13:45,535 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:13:45,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:13:45,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:13:45,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 02:13:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:49,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 2897 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:13:49,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:13:50,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:13:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:13:51,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1729538024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:13:51,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:13:51,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-07 02:13:51,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240922042] [2021-11-07 02:13:51,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:13:51,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:13:51,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:13:51,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:13:51,654 INFO L87 Difference]: Start difference. First operand 7107 states and 10273 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:54,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:13:54,014 INFO L93 Difference]: Finished difference Result 21215 states and 30883 transitions. [2021-11-07 02:13:54,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:13:54,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 02:13:54,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:13:54,130 INFO L225 Difference]: With dead ends: 21215 [2021-11-07 02:13:54,130 INFO L226 Difference]: Without dead ends: 14160 [2021-11-07 02:13:54,154 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:13:54,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14160 states. [2021-11-07 02:13:54,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14160 to 14148. [2021-11-07 02:13:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14148 states, 13981 states have (on average 1.4436020313282312) internal successors, (20183), 13997 states have internal predecessors, (20183), 126 states have call successors, (126), 36 states have call predecessors, (126), 36 states have return successors, (189), 120 states have call predecessors, (189), 126 states have call successors, (189) [2021-11-07 02:13:54,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14148 states to 14148 states and 20498 transitions. [2021-11-07 02:13:54,865 INFO L78 Accepts]: Start accepts. Automaton has 14148 states and 20498 transitions. Word has length 43 [2021-11-07 02:13:54,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:13:54,865 INFO L470 AbstractCegarLoop]: Abstraction has 14148 states and 20498 transitions. [2021-11-07 02:13:54,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:54,867 INFO L276 IsEmpty]: Start isEmpty. Operand 14148 states and 20498 transitions. [2021-11-07 02:13:54,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:13:54,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:13:54,869 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:13:54,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:13:55,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:13:55,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:13:55,294 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:13:55,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:13:55,295 INFO L85 PathProgramCache]: Analyzing trace with hash -607608588, now seen corresponding path program 1 times [2021-11-07 02:13:55,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:13:55,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358047203] [2021-11-07 02:13:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:13:55,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:13:55,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:13:55,309 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:13:55,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:14:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:09,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 2898 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:14:09,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:10,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:10,913 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:10,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358047203] [2021-11-07 02:14:10,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358047203] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:10,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [717634675] [2021-11-07 02:14:10,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:10,915 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:14:10,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:14:10,917 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:14:10,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 02:14:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:14,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 2898 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:14:14,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:14:16,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:17,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:14:17,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [717634675] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:17,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:14:17,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-07 02:14:17,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851851961] [2021-11-07 02:14:17,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:14:17,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:17,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:14:17,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:14:17,037 INFO L87 Difference]: Start difference. First operand 14148 states and 20498 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:19,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:19,389 INFO L93 Difference]: Finished difference Result 56351 states and 81670 transitions. [2021-11-07 02:14:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:14:19,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 44 [2021-11-07 02:14:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:19,906 INFO L225 Difference]: With dead ends: 56351 [2021-11-07 02:14:19,906 INFO L226 Difference]: Without dead ends: 42255 [2021-11-07 02:14:19,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:14:20,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42255 states. [2021-11-07 02:14:21,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42255 to 28177. [2021-11-07 02:14:21,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28177 states, 27848 states have (on average 1.44301206549842) internal successors, (40185), 27876 states have internal predecessors, (40185), 252 states have call successors, (252), 72 states have call predecessors, (252), 72 states have return successors, (378), 240 states have call predecessors, (378), 252 states have call successors, (378) [2021-11-07 02:14:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28177 states to 28177 states and 40815 transitions. [2021-11-07 02:14:21,866 INFO L78 Accepts]: Start accepts. Automaton has 28177 states and 40815 transitions. Word has length 44 [2021-11-07 02:14:21,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:21,869 INFO L470 AbstractCegarLoop]: Abstraction has 28177 states and 40815 transitions. [2021-11-07 02:14:21,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:21,869 INFO L276 IsEmpty]: Start isEmpty. Operand 28177 states and 40815 transitions. [2021-11-07 02:14:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 02:14:21,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:21,872 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:21,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:22,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:22,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:22,298 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:14:22,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:22,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1655990149, now seen corresponding path program 1 times [2021-11-07 02:14:22,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:22,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892602888] [2021-11-07 02:14:22,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:22,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:22,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:22,309 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:22,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:14:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:36,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:14:36,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:37,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:37,849 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:37,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892602888] [2021-11-07 02:14:37,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892602888] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:37,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1846180738] [2021-11-07 02:14:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:37,850 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:14:37,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:14:37,858 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:14:37,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 02:14:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:41,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:14:41,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:41,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:14:41,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:14:42,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1846180738] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:42,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:14:42,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:14:42,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167551740] [2021-11-07 02:14:42,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:14:42,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:42,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:14:42,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:14:42,465 INFO L87 Difference]: Start difference. First operand 28177 states and 40815 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:43,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:43,811 INFO L93 Difference]: Finished difference Result 42247 states and 61190 transitions. [2021-11-07 02:14:43,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:14:43,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 02:14:43,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:43,981 INFO L225 Difference]: With dead ends: 42247 [2021-11-07 02:14:43,981 INFO L226 Difference]: Without dead ends: 42245 [2021-11-07 02:14:44,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:14:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42245 states. [2021-11-07 02:14:46,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42245 to 42243. [2021-11-07 02:14:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42243 states, 41752 states have (on average 1.4428530369802643) internal successors, (60242), 41792 states have internal predecessors, (60242), 378 states have call successors, (378), 108 states have call predecessors, (378), 108 states have return successors, (567), 360 states have call predecessors, (567), 378 states have call successors, (567) [2021-11-07 02:14:46,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42243 states to 42243 states and 61187 transitions. [2021-11-07 02:14:46,323 INFO L78 Accepts]: Start accepts. Automaton has 42243 states and 61187 transitions. Word has length 45 [2021-11-07 02:14:46,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:46,324 INFO L470 AbstractCegarLoop]: Abstraction has 42243 states and 61187 transitions. [2021-11-07 02:14:46,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:46,324 INFO L276 IsEmpty]: Start isEmpty. Operand 42243 states and 61187 transitions. [2021-11-07 02:14:46,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 02:14:46,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:46,327 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:46,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:46,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:46,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:14:46,742 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:14:46,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash 203919838, now seen corresponding path program 1 times [2021-11-07 02:14:46,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:46,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600432717] [2021-11-07 02:14:46,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:46,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:46,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:46,755 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:46,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:15:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:01,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 2900 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:15:01,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:01,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:02,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:15:02,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600432717] [2021-11-07 02:15:02,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600432717] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:15:02,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [526386392] [2021-11-07 02:15:02,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:02,158 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:02,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:15:02,159 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:15:02,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 02:15:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:05,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2900 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:15:05,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:15:06,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:15:06,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [526386392] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:15:06,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:15:06,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:15:06,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745236151] [2021-11-07 02:15:06,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:15:06,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:15:06,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:15:06,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:06,940 INFO L87 Difference]: Start difference. First operand 42243 states and 61187 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:07,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:07,998 INFO L93 Difference]: Finished difference Result 42243 states and 61187 transitions. [2021-11-07 02:15:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:15:08,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-07 02:15:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:08,152 INFO L225 Difference]: With dead ends: 42243 [2021-11-07 02:15:08,152 INFO L226 Difference]: Without dead ends: 42241 [2021-11-07 02:15:08,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42241 states. [2021-11-07 02:15:10,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42241 to 42241. [2021-11-07 02:15:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42241 states, 41751 states have (on average 1.442839692462456) internal successors, (60240), 41790 states have internal predecessors, (60240), 378 states have call successors, (378), 108 states have call predecessors, (378), 108 states have return successors, (567), 360 states have call predecessors, (567), 378 states have call successors, (567) [2021-11-07 02:15:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42241 states to 42241 states and 61185 transitions. [2021-11-07 02:15:10,545 INFO L78 Accepts]: Start accepts. Automaton has 42241 states and 61185 transitions. Word has length 46 [2021-11-07 02:15:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:10,546 INFO L470 AbstractCegarLoop]: Abstraction has 42241 states and 61185 transitions. [2021-11-07 02:15:10,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:10,546 INFO L276 IsEmpty]: Start isEmpty. Operand 42241 states and 61185 transitions. [2021-11-07 02:15:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 02:15:10,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:10,550 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:15:10,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:10,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:10,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:15:10,980 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:15:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2026554597, now seen corresponding path program 1 times [2021-11-07 02:15:10,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:15:10,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901580095] [2021-11-07 02:15:10,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:10,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:15:10,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:15:10,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:15:11,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:15:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:25,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:15:25,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:26,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:26,861 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:15:26,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901580095] [2021-11-07 02:15:26,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901580095] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:15:26,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1325454425] [2021-11-07 02:15:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:26,861 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:26,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:15:26,862 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:15:26,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 02:15:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:31,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:15:31,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:15:31,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:15:32,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1325454425] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:15:32,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:15:32,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:15:32,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417528208] [2021-11-07 02:15:32,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:15:32,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:15:32,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:15:32,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:32,191 INFO L87 Difference]: Start difference. First operand 42241 states and 61185 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:33,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:33,304 INFO L93 Difference]: Finished difference Result 42241 states and 61185 transitions. [2021-11-07 02:15:33,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:15:33,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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 47 [2021-11-07 02:15:33,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:33,413 INFO L225 Difference]: With dead ends: 42241 [2021-11-07 02:15:33,413 INFO L226 Difference]: Without dead ends: 42232 [2021-11-07 02:15:33,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:33,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42232 states. [2021-11-07 02:15:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42232 to 42232. [2021-11-07 02:15:35,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42232 states, 41743 states have (on average 1.4428287377524376) internal successors, (60228), 41781 states have internal predecessors, (60228), 378 states have call successors, (378), 108 states have call predecessors, (378), 108 states have return successors, (567), 360 states have call predecessors, (567), 378 states have call successors, (567) [2021-11-07 02:15:35,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42232 states to 42232 states and 61173 transitions. [2021-11-07 02:15:35,788 INFO L78 Accepts]: Start accepts. Automaton has 42232 states and 61173 transitions. Word has length 47 [2021-11-07 02:15:35,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:35,790 INFO L470 AbstractCegarLoop]: Abstraction has 42232 states and 61173 transitions. [2021-11-07 02:15:35,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:35,791 INFO L276 IsEmpty]: Start isEmpty. Operand 42232 states and 61173 transitions. [2021-11-07 02:15:35,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 02:15:35,804 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:35,805 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] [2021-11-07 02:15:35,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:36,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:36,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:36,222 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:15:36,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:36,223 INFO L85 PathProgramCache]: Analyzing trace with hash -318674110, now seen corresponding path program 1 times [2021-11-07 02:15:36,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:15:36,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583362700] [2021-11-07 02:15:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:36,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:15:36,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:15:36,239 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:15:36,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:15:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:51,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:15:51,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:52,268 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 02:15:52,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:53,035 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 02:15:53,035 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:15:53,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583362700] [2021-11-07 02:15:53,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583362700] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:15:53,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [13543337] [2021-11-07 02:15:53,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:53,036 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:53,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:15:53,037 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:15:53,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 02:15:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:57,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:15:57,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:15:57,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:15:58,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [13543337] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:15:58,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:15:58,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:15:58,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291202014] [2021-11-07 02:15:58,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:15:58,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:15:58,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:15:58,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:58,301 INFO L87 Difference]: Start difference. First operand 42232 states and 61173 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:01,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:01,533 INFO L93 Difference]: Finished difference Result 116351 states and 169255 transitions. [2021-11-07 02:16:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:16:01,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 77 [2021-11-07 02:16:01,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:01,745 INFO L225 Difference]: With dead ends: 116351 [2021-11-07 02:16:01,745 INFO L226 Difference]: Without dead ends: 74171 [2021-11-07 02:16:01,992 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:16:02,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74171 states. [2021-11-07 02:16:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74171 to 74140. [2021-11-07 02:16:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74140 states, 73255 states have (on average 1.4528701112552045) internal successors, (106430), 73329 states have internal predecessors, (106430), 666 states have call successors, (666), 216 states have call predecessors, (666), 216 states have return successors, (999), 630 states have call predecessors, (999), 666 states have call successors, (999) [2021-11-07 02:16:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74140 states to 74140 states and 108095 transitions. [2021-11-07 02:16:05,354 INFO L78 Accepts]: Start accepts. Automaton has 74140 states and 108095 transitions. Word has length 77 [2021-11-07 02:16:05,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:05,355 INFO L470 AbstractCegarLoop]: Abstraction has 74140 states and 108095 transitions. [2021-11-07 02:16:05,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:05,355 INFO L276 IsEmpty]: Start isEmpty. Operand 74140 states and 108095 transitions. [2021-11-07 02:16:05,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 02:16:05,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:05,375 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:05,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:05,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:05,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:05,790 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:16:05,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:05,791 INFO L85 PathProgramCache]: Analyzing trace with hash 48627623, now seen corresponding path program 1 times [2021-11-07 02:16:05,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:05,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725560918] [2021-11-07 02:16:05,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:05,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:05,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:05,800 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:05,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 02:16:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:21,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 3107 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:16:21,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 02:16:21,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 02:16:22,884 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:22,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725560918] [2021-11-07 02:16:22,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725560918] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:16:22,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [57046043] [2021-11-07 02:16:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:22,885 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:22,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:16:22,887 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:16:22,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 02:16:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:27,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 3107 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:16:27,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:27,612 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:16:27,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:16:28,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [57046043] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:28,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:16:28,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:16:28,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123220272] [2021-11-07 02:16:28,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:16:28,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:28,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:16:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:16:28,157 INFO L87 Difference]: Start difference. First operand 74140 states and 108095 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:30,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:30,888 INFO L93 Difference]: Finished difference Result 125439 states and 182888 transitions. [2021-11-07 02:16:30,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:16:30,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 94 [2021-11-07 02:16:30,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:31,004 INFO L225 Difference]: With dead ends: 125439 [2021-11-07 02:16:31,005 INFO L226 Difference]: Without dead ends: 51351 [2021-11-07 02:16:31,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:16:31,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51351 states. [2021-11-07 02:16:33,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51351 to 51337. [2021-11-07 02:16:33,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51337 states, 50724 states have (on average 1.4528231212049523) internal successors, (73693), 50776 states have internal predecessors, (73693), 460 states have call successors, (460), 150 states have call predecessors, (460), 150 states have return successors, (682), 435 states have call predecessors, (682), 460 states have call successors, (682) [2021-11-07 02:16:33,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51337 states to 51337 states and 74835 transitions. [2021-11-07 02:16:33,538 INFO L78 Accepts]: Start accepts. Automaton has 51337 states and 74835 transitions. Word has length 94 [2021-11-07 02:16:33,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:33,539 INFO L470 AbstractCegarLoop]: Abstraction has 51337 states and 74835 transitions. [2021-11-07 02:16:33,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 51337 states and 74835 transitions. [2021-11-07 02:16:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 02:16:33,556 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:33,556 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 02:16:33,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-07 02:16:33,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-07 02:16:33,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:33,982 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:16:33,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:33,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2143139377, now seen corresponding path program 1 times [2021-11-07 02:16:33,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:33,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734655729] [2021-11-07 02:16:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:33,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:33,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:33,993 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:34,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 02:16:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:49,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 3150 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:16:49,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:16:50,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:16:51,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:51,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734655729] [2021-11-07 02:16:51,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734655729] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:16:51,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1959732954] [2021-11-07 02:16:51,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:51,279 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:51,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:16:51,280 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:16:51,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 02:16:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:55,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 3150 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:16:55,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:16:56,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:56,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:16:56,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1959732954] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:56,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:16:56,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 14 [2021-11-07 02:16:56,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244767782] [2021-11-07 02:16:56,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:16:56,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:56,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:16:56,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:16:56,766 INFO L87 Difference]: Start difference. First operand 51337 states and 74835 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:17:07,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:17:07,110 INFO L93 Difference]: Finished difference Result 199897 states and 291378 transitions. [2021-11-07 02:17:07,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:17:07,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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 107 [2021-11-07 02:17:07,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:17:07,468 INFO L225 Difference]: With dead ends: 199897 [2021-11-07 02:17:07,468 INFO L226 Difference]: Without dead ends: 150385 [2021-11-07 02:17:07,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-07 02:17:07,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150385 states. [2021-11-07 02:17:11,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150385 to 51361. [2021-11-07 02:17:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51361 states, 50748 states have (on average 1.4526089698116182) internal successors, (73717), 50800 states have internal predecessors, (73717), 460 states have call successors, (460), 150 states have call predecessors, (460), 150 states have return successors, (682), 435 states have call predecessors, (682), 460 states have call successors, (682) [2021-11-07 02:17:11,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51361 states to 51361 states and 74859 transitions. [2021-11-07 02:17:11,570 INFO L78 Accepts]: Start accepts. Automaton has 51361 states and 74859 transitions. Word has length 107 [2021-11-07 02:17:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:17:11,571 INFO L470 AbstractCegarLoop]: Abstraction has 51361 states and 74859 transitions. [2021-11-07 02:17:11,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:17:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 51361 states and 74859 transitions. [2021-11-07 02:17:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 02:17:11,587 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:11,587 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 02:17:11,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:11,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:11,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:17:11,989 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:17:11,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:11,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1140710669, now seen corresponding path program 1 times [2021-11-07 02:17:11,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:11,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365475582] [2021-11-07 02:17:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:11,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:11,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:11,998 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:12,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 02:17:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:27,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 3148 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:17:27,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:17:28,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:17:30,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:17:30,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365475582] [2021-11-07 02:17:30,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365475582] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:17:30,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1905483365] [2021-11-07 02:17:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:30,003 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:17:30,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:17:30,004 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:17:30,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-07 02:17:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:35,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 3148 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:17:35,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:17:35,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:17:36,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1905483365] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:17:36,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:17:36,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-07 02:17:36,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661573452] [2021-11-07 02:17:36,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:17:36,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:17:36,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:17:36,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:17:36,766 INFO L87 Difference]: Start difference. First operand 51361 states and 74859 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:17:51,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:17:51,680 INFO L93 Difference]: Finished difference Result 130972 states and 190887 transitions. [2021-11-07 02:17:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:17:51,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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 107 [2021-11-07 02:17:51,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:17:51,979 INFO L225 Difference]: With dead ends: 130972 [2021-11-07 02:17:51,979 INFO L226 Difference]: Without dead ends: 81364 [2021-11-07 02:17:52,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:17:52,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81364 states. [2021-11-07 02:17:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81364 to 51361. [2021-11-07 02:17:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51361 states, 50748 states have (on average 1.4518995822495468) internal successors, (73681), 50800 states have internal predecessors, (73681), 460 states have call successors, (460), 150 states have call predecessors, (460), 150 states have return successors, (682), 435 states have call predecessors, (682), 460 states have call successors, (682) [2021-11-07 02:17:56,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51361 states to 51361 states and 74823 transitions. [2021-11-07 02:17:56,047 INFO L78 Accepts]: Start accepts. Automaton has 51361 states and 74823 transitions. Word has length 107 [2021-11-07 02:17:56,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:17:56,048 INFO L470 AbstractCegarLoop]: Abstraction has 51361 states and 74823 transitions. [2021-11-07 02:17:56,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:17:56,048 INFO L276 IsEmpty]: Start isEmpty. Operand 51361 states and 74823 transitions. [2021-11-07 02:17:56,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 02:17:56,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:56,066 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 02:17:56,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:56,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:56,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:17:56,494 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:17:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:56,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1057279255, now seen corresponding path program 1 times [2021-11-07 02:17:56,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:56,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768704009] [2021-11-07 02:17:56,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:56,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:56,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:56,502 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:56,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 02:18:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:12,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 3159 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:18:12,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:13,344 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:18:13,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:18:14,373 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:14,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768704009] [2021-11-07 02:18:14,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768704009] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:18:14,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1107627369] [2021-11-07 02:18:14,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:14,374 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:18:14,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:18:14,385 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:18:14,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 02:18:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:24,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 3159 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:18:24,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:18:25,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:18:25,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1107627369] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:18:25,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051767044] [2021-11-07 02:18:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:25,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:18:25,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:18:25,670 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:18:25,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c27f0e-1299-466e-a093-9ff4bedee45b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process