./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.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_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/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_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/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_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/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 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:34:04,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:34:04,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:34:04,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:34:04,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:34:04,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:34:04,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:34:04,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:34:04,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:34:04,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:34:04,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:34:04,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:34:04,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:34:04,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:34:04,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:34:04,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:34:04,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:34:04,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:34:04,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:34:04,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:34:04,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:34:04,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:34:04,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:34:04,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:34:04,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:34:04,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:34:04,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:34:04,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:34:04,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:34:04,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:34:04,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:34:04,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:34:04,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:34:04,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:34:04,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:34:04,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:34:04,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:34:04,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:34:04,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:34:04,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:34:04,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:34:04,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:34:04,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:34:04,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:34:04,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:34:04,545 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:34:04,546 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:34:04,546 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:34:04,546 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:34:04,546 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:34:04,547 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:34:04,547 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:34:04,551 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:34:04,551 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:34:04,551 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:34:04,552 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:34:04,552 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:34:04,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:34:04,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:34:04,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:34:04,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:34:04,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:34:04,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:34:04,554 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:34:04,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:34:04,554 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:34:04,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:34:04,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:34:04,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:34:04,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:34:04,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:34:04,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:34:04,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:34:04,556 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:34:04,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:34:04,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:34:04,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:34:04,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:34:04,558 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_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 [2021-11-07 01:34:04,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:34:04,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:34:04,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:34:04,834 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:34:04,835 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:34:04,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-07 01:34:04,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/data/a12a5bdd3/7b272461785d4da89fa083f7a2db41b1/FLAGce1782e9d [2021-11-07 01:34:05,787 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:34:05,787 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-07 01:34:05,844 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/data/a12a5bdd3/7b272461785d4da89fa083f7a2db41b1/FLAGce1782e9d [2021-11-07 01:34:06,271 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/data/a12a5bdd3/7b272461785d4da89fa083f7a2db41b1 [2021-11-07 01:34:06,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:34:06,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:34:06,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:06,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:34:06,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:34:06,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:06" (1/1) ... [2021-11-07 01:34:06,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f281e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:06, skipping insertion in model container [2021-11-07 01:34:06,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:06" (1/1) ... [2021-11-07 01:34:06,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:34:06,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:34:07,289 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_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-07 01:34:07,474 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:34:07,476 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:34:07,614 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:34:07,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:07,797 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:34:07,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@729a304f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:07, skipping insertion in model container [2021-11-07 01:34:07,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:07,799 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:34:07,801 INFO L168 Benchmark]: Toolchain (without parser) took 1519.86 ms. Allocated memory was 104.9 MB in the beginning and 153.1 MB in the end (delta: 48.2 MB). Free memory was 60.8 MB in the beginning and 108.3 MB in the end (delta: -47.5 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:34:07,802 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:34:07,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1515.70 ms. Allocated memory was 104.9 MB in the beginning and 153.1 MB in the end (delta: 48.2 MB). Free memory was 60.6 MB in the beginning and 108.3 MB in the end (delta: -47.7 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:34:07,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1515.70 ms. Allocated memory was 104.9 MB in the beginning and 153.1 MB in the end (delta: 48.2 MB). Free memory was 60.6 MB in the beginning and 108.3 MB in the end (delta: -47.7 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5870]: 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_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/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_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/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_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/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 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:34:10,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:34:10,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:34:10,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:34:10,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:34:10,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:34:10,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:34:10,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:34:10,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:34:10,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:34:10,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:34:10,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:34:10,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:34:10,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:34:10,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:34:10,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:34:10,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:34:10,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:34:10,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:34:10,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:34:10,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:34:10,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:34:10,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:34:10,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:34:10,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:34:10,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:34:10,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:34:10,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:34:10,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:34:10,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:34:10,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:34:10,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:34:10,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:34:10,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:34:10,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:34:10,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:34:10,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:34:10,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:34:10,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:34:10,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:34:10,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:34:10,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:34:10,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:34:10,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:34:10,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:34:10,216 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:34:10,216 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:34:10,216 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:34:10,216 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:34:10,217 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:34:10,217 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:34:10,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:34:10,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:34:10,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:34:10,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:34:10,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:34:10,220 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:34:10,220 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:34:10,220 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:34:10,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:34:10,220 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:34:10,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:34:10,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:34:10,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:34:10,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:34:10,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:34:10,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:34:10,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:34:10,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:34:10,223 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:34:10,224 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:10,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:34:10,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:34:10,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:34:10,224 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_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 [2021-11-07 01:34:10,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:34:10,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:34:10,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:34:10,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:34:10,619 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:34:10,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-07 01:34:10,693 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/data/d6ff47d55/9c7731fcad5d48c19c5ddd6d045215d2/FLAGfff0507dd [2021-11-07 01:34:11,615 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:34:11,616 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-07 01:34:11,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/data/d6ff47d55/9c7731fcad5d48c19c5ddd6d045215d2/FLAGfff0507dd [2021-11-07 01:34:12,096 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/data/d6ff47d55/9c7731fcad5d48c19c5ddd6d045215d2 [2021-11-07 01:34:12,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:34:12,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:34:12,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:12,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:34:12,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:34:12,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:12" (1/1) ... [2021-11-07 01:34:12,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2645a5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:12, skipping insertion in model container [2021-11-07 01:34:12,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:12" (1/1) ... [2021-11-07 01:34:12,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:34:12,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:34:13,229 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_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-07 01:34:13,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:13,733 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:34:13,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:34:13,940 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_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-07 01:34:14,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:14,028 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:34:14,220 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_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-07 01:34:14,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:14,453 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:34:14,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:14 WrapperNode [2021-11-07 01:34:14,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:14,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:34:14,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:34:14,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:34:14,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:14" (1/1) ... [2021-11-07 01:34:14,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:14" (1/1) ... [2021-11-07 01:34:14,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:34:14,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:34:14,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:34:14,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:34:14,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:14" (1/1) ... [2021-11-07 01:34:14,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:14" (1/1) ... [2021-11-07 01:34:14,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:14" (1/1) ... [2021-11-07 01:34:14,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:14" (1/1) ... [2021-11-07 01:34:14,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:14" (1/1) ... [2021-11-07 01:34:14,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:14" (1/1) ... [2021-11-07 01:34:14,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:14" (1/1) ... [2021-11-07 01:34:15,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:34:15,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:34:15,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:34:15,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:34:15,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:14" (1/1) ... [2021-11-07 01:34:15,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:34:15,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:34:15,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:34:15,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:34:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:34:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 01:34:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:34:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:34:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:34:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:34:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:34:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 01:34:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:34:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:34:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:34:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:34:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:34:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:34:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:34:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:34:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:34:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:34:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:34:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:34:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:34:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:34:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:34:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:34:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:34:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:34:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:34:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:34:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:34:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:34:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:34:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:34:37,164 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:34:37,164 INFO L299 CfgBuilder]: Removed 777 assume(true) statements. [2021-11-07 01:34:37,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:37 BoogieIcfgContainer [2021-11-07 01:34:37,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:34:37,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:34:37,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:34:37,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:34:37,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:34:12" (1/3) ... [2021-11-07 01:34:37,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409e9b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:37, skipping insertion in model container [2021-11-07 01:34:37,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:14" (2/3) ... [2021-11-07 01:34:37,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409e9b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:37, skipping insertion in model container [2021-11-07 01:34:37,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:37" (3/3) ... [2021-11-07 01:34:37,177 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-07 01:34:37,182 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:34:37,183 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:34:37,239 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:34:37,245 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:34:37,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:34:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 1061 states, 1059 states have (on average 1.6052880075542966) internal successors, (1700), 1060 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:34:37,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:37,309 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:37,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:37,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:37,315 INFO L85 PathProgramCache]: Analyzing trace with hash 536616939, now seen corresponding path program 1 times [2021-11-07 01:34:37,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:37,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669948814] [2021-11-07 01:34:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:37,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:37,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:37,339 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:37,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:34:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:38,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:34:38,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:38,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:38,500 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:38,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669948814] [2021-11-07 01:34:38,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669948814] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:38,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:38,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:34:38,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125280337] [2021-11-07 01:34:38,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:34:38,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:34:38,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:34:38,525 INFO L87 Difference]: Start difference. First operand has 1061 states, 1059 states have (on average 1.6052880075542966) internal successors, (1700), 1060 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:38,659 INFO L93 Difference]: Finished difference Result 2118 states and 3395 transitions. [2021-11-07 01:34:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:34:38,660 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:34:38,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:38,695 INFO L225 Difference]: With dead ends: 2118 [2021-11-07 01:34:38,695 INFO L226 Difference]: Without dead ends: 1051 [2021-11-07 01:34:38,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:34:38,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-11-07 01:34:38,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1051. [2021-11-07 01:34:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.5085714285714287) internal successors, (1584), 1050 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1584 transitions. [2021-11-07 01:34:38,818 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1584 transitions. Word has length 51 [2021-11-07 01:34:38,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:38,819 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 1584 transitions. [2021-11-07 01:34:38,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:38,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1584 transitions. [2021-11-07 01:34:38,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:34:38,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:38,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:38,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:39,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:39,052 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:39,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:39,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2016685283, now seen corresponding path program 1 times [2021-11-07 01:34:39,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:39,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950438087] [2021-11-07 01:34:39,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:39,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:39,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:39,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:39,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:34:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:39,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:34:39,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:39,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:39,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:40,095 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:40,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950438087] [2021-11-07 01:34:40,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950438087] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:40,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:40,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:34:40,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021014682] [2021-11-07 01:34:40,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:34:40,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:40,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:34:40,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:34:40,101 INFO L87 Difference]: Start difference. First operand 1051 states and 1584 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:42,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:42,415 INFO L93 Difference]: Finished difference Result 3914 states and 5929 transitions. [2021-11-07 01:34:42,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:34:42,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:34:42,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:42,434 INFO L225 Difference]: With dead ends: 3914 [2021-11-07 01:34:42,434 INFO L226 Difference]: Without dead ends: 2898 [2021-11-07 01:34:42,437 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:34:42,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2021-11-07 01:34:42,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 2898. [2021-11-07 01:34:42,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2898 states, 2897 states have (on average 1.5105281325509148) internal successors, (4376), 2897 states have internal predecessors, (4376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 4376 transitions. [2021-11-07 01:34:42,545 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 4376 transitions. Word has length 51 [2021-11-07 01:34:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:42,546 INFO L470 AbstractCegarLoop]: Abstraction has 2898 states and 4376 transitions. [2021-11-07 01:34:42,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:42,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 4376 transitions. [2021-11-07 01:34:42,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:34:42,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:42,549 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:42,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:42,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:42,769 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:42,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:42,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2137898722, now seen corresponding path program 1 times [2021-11-07 01:34:42,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:42,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949568374] [2021-11-07 01:34:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:42,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:42,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:42,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:42,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:34:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:43,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:34:43,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:43,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:43,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:43,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:43,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949568374] [2021-11-07 01:34:43,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949568374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:43,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:43,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:34:43,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089278220] [2021-11-07 01:34:43,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:34:43,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:43,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:34:43,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:34:43,763 INFO L87 Difference]: Start difference. First operand 2898 states and 4376 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:44,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:44,061 INFO L93 Difference]: Finished difference Result 5760 states and 8715 transitions. [2021-11-07 01:34:44,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:34:44,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-07 01:34:44,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:44,082 INFO L225 Difference]: With dead ends: 5760 [2021-11-07 01:34:44,082 INFO L226 Difference]: Without dead ends: 2897 [2021-11-07 01:34:44,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:34:44,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2021-11-07 01:34:44,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2897. [2021-11-07 01:34:44,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2896 states have (on average 1.5096685082872927) internal successors, (4372), 2896 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 4372 transitions. [2021-11-07 01:34:44,231 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 4372 transitions. Word has length 52 [2021-11-07 01:34:44,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:44,232 INFO L470 AbstractCegarLoop]: Abstraction has 2897 states and 4372 transitions. [2021-11-07 01:34:44,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:44,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 4372 transitions. [2021-11-07 01:34:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:34:44,236 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:44,239 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:44,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:44,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:44,460 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:44,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:44,461 INFO L85 PathProgramCache]: Analyzing trace with hash 36654566, now seen corresponding path program 1 times [2021-11-07 01:34:44,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:44,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50767637] [2021-11-07 01:34:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:44,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:44,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:44,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:44,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:34:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:45,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:34:45,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:34:45,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:34:45,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:45,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50767637] [2021-11-07 01:34:45,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50767637] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:45,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:45,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:34:45,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301265476] [2021-11-07 01:34:45,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:34:45,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:45,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:34:45,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:34:45,973 INFO L87 Difference]: Start difference. First operand 2897 states and 4372 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:47,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:47,366 INFO L93 Difference]: Finished difference Result 8619 states and 13045 transitions. [2021-11-07 01:34:47,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:34:47,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 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 01:34:47,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:47,402 INFO L225 Difference]: With dead ends: 8619 [2021-11-07 01:34:47,403 INFO L226 Difference]: Without dead ends: 5684 [2021-11-07 01:34:47,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:47,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5684 states. [2021-11-07 01:34:47,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5684 to 5516. [2021-11-07 01:34:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5516 states, 5515 states have (on average 1.513145965548504) internal successors, (8345), 5515 states have internal predecessors, (8345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 8345 transitions. [2021-11-07 01:34:47,710 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 8345 transitions. Word has length 77 [2021-11-07 01:34:47,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:47,713 INFO L470 AbstractCegarLoop]: Abstraction has 5516 states and 8345 transitions. [2021-11-07 01:34:47,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 8345 transitions. [2021-11-07 01:34:47,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:34:47,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:47,727 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 01:34:47,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:47,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:47,942 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:47,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2124171513, now seen corresponding path program 1 times [2021-11-07 01:34:47,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:47,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727882410] [2021-11-07 01:34:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:47,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:47,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:47,946 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:47,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:34:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:48,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:34:48,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:34:48,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:34:49,296 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:49,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727882410] [2021-11-07 01:34:49,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727882410] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:49,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:49,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:34:49,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771277670] [2021-11-07 01:34:49,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:34:49,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:49,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:34:49,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:34:49,298 INFO L87 Difference]: Start difference. First operand 5516 states and 8345 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 01:34:49,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:49,780 INFO L93 Difference]: Finished difference Result 12798 states and 19740 transitions. [2021-11-07 01:34:49,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:34:49,781 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 96 [2021-11-07 01:34:49,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:49,824 INFO L225 Difference]: With dead ends: 12798 [2021-11-07 01:34:49,825 INFO L226 Difference]: Without dead ends: 7317 [2021-11-07 01:34:49,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:34:49,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7317 states. [2021-11-07 01:34:50,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7317 to 7224. [2021-11-07 01:34:50,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7224 states, 7223 states have (on average 1.5608472933684066) internal successors, (11274), 7223 states have internal predecessors, (11274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:50,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7224 states to 7224 states and 11274 transitions. [2021-11-07 01:34:50,205 INFO L78 Accepts]: Start accepts. Automaton has 7224 states and 11274 transitions. Word has length 96 [2021-11-07 01:34:50,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:50,205 INFO L470 AbstractCegarLoop]: Abstraction has 7224 states and 11274 transitions. [2021-11-07 01:34:50,206 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 01:34:50,206 INFO L276 IsEmpty]: Start isEmpty. Operand 7224 states and 11274 transitions. [2021-11-07 01:34:50,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:34:50,215 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:50,216 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 01:34:50,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:50,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:50,431 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:50,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:50,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1237412217, now seen corresponding path program 2 times [2021-11-07 01:34:50,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:50,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063984988] [2021-11-07 01:34:50,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:34:50,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:50,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:50,435 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:50,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:34:55,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:34:55,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:34:55,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 01:34:55,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:56,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:34:56,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:34:57,049 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:57,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063984988] [2021-11-07 01:34:57,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063984988] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:57,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:57,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-07 01:34:57,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475863180] [2021-11-07 01:34:57,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:34:57,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:34:57,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:34:57,053 INFO L87 Difference]: Start difference. First operand 7224 states and 11274 transitions. Second operand has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:03,127 INFO L93 Difference]: Finished difference Result 24061 states and 37776 transitions. [2021-11-07 01:35:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:35:03,131 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 states have internal predecessors, (108), 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 96 [2021-11-07 01:35:03,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:03,210 INFO L225 Difference]: With dead ends: 24061 [2021-11-07 01:35:03,210 INFO L226 Difference]: Without dead ends: 18038 [2021-11-07 01:35:03,222 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2021-11-07 01:35:03,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18038 states. [2021-11-07 01:35:03,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18038 to 7224. [2021-11-07 01:35:04,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7224 states, 7223 states have (on average 1.5547556417001247) internal successors, (11230), 7223 states have internal predecessors, (11230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7224 states to 7224 states and 11230 transitions. [2021-11-07 01:35:04,017 INFO L78 Accepts]: Start accepts. Automaton has 7224 states and 11230 transitions. Word has length 96 [2021-11-07 01:35:04,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:04,018 INFO L470 AbstractCegarLoop]: Abstraction has 7224 states and 11230 transitions. [2021-11-07 01:35:04,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 7224 states and 11230 transitions. [2021-11-07 01:35:04,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 01:35:04,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:04,034 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 01:35:04,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:04,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:04,255 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:35:04,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:04,256 INFO L85 PathProgramCache]: Analyzing trace with hash 107232550, now seen corresponding path program 1 times [2021-11-07 01:35:04,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:04,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542327398] [2021-11-07 01:35:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:04,257 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:04,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:04,258 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:04,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:35:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:05,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:05,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:05,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:05,654 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:05,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542327398] [2021-11-07 01:35:05,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542327398] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:05,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:05,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:35:05,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107449937] [2021-11-07 01:35:05,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:35:05,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:05,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:35:05,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:35:05,662 INFO L87 Difference]: Start difference. First operand 7224 states and 11230 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:08,652 INFO L93 Difference]: Finished difference Result 18265 states and 28702 transitions. [2021-11-07 01:35:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:35:08,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 97 [2021-11-07 01:35:08,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:08,682 INFO L225 Difference]: With dead ends: 18265 [2021-11-07 01:35:08,682 INFO L226 Difference]: Without dead ends: 12242 [2021-11-07 01:35:08,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:35:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12242 states. [2021-11-07 01:35:09,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12242 to 12056. [2021-11-07 01:35:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12056 states, 12055 states have (on average 1.5767731231854003) internal successors, (19008), 12055 states have internal predecessors, (19008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:09,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12056 states to 12056 states and 19008 transitions. [2021-11-07 01:35:09,699 INFO L78 Accepts]: Start accepts. Automaton has 12056 states and 19008 transitions. Word has length 97 [2021-11-07 01:35:09,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:09,700 INFO L470 AbstractCegarLoop]: Abstraction has 12056 states and 19008 transitions. [2021-11-07 01:35:09,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:09,700 INFO L276 IsEmpty]: Start isEmpty. Operand 12056 states and 19008 transitions. [2021-11-07 01:35:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 01:35:09,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:09,710 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-07 01:35:09,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:09,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:09,927 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:35:09,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1430192971, now seen corresponding path program 1 times [2021-11-07 01:35:09,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:09,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163535398] [2021-11-07 01:35:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:09,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:09,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:09,930 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:09,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:35:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:10,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:10,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:35:11,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:35:11,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:11,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163535398] [2021-11-07 01:35:11,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163535398] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:11,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:11,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:35:11,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301555261] [2021-11-07 01:35:11,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:35:11,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:11,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:35:11,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:35:11,449 INFO L87 Difference]: Start difference. First operand 12056 states and 19008 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:12,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:12,557 INFO L93 Difference]: Finished difference Result 32096 states and 50855 transitions. [2021-11-07 01:35:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:12,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-07 01:35:12,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:12,605 INFO L225 Difference]: With dead ends: 32096 [2021-11-07 01:35:12,605 INFO L226 Difference]: Without dead ends: 20075 [2021-11-07 01:35:12,625 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:35:12,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20075 states. [2021-11-07 01:35:13,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20075 to 19992. [2021-11-07 01:35:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19992 states, 19991 states have (on average 1.5869141113501075) internal successors, (31724), 19991 states have internal predecessors, (31724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:14,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19992 states to 19992 states and 31724 transitions. [2021-11-07 01:35:14,002 INFO L78 Accepts]: Start accepts. Automaton has 19992 states and 31724 transitions. Word has length 98 [2021-11-07 01:35:14,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:14,002 INFO L470 AbstractCegarLoop]: Abstraction has 19992 states and 31724 transitions. [2021-11-07 01:35:14,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 19992 states and 31724 transitions. [2021-11-07 01:35:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 01:35:14,017 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:14,017 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-07 01:35:14,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:14,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:14,239 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:35:14,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:14,240 INFO L85 PathProgramCache]: Analyzing trace with hash -352111741, now seen corresponding path program 2 times [2021-11-07 01:35:14,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:14,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046698928] [2021-11-07 01:35:14,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:35:14,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:14,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:14,242 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:14,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:35:21,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:35:21,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:35:21,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:21,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:35:21,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:35:21,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:21,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046698928] [2021-11-07 01:35:21,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046698928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:21,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:21,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:35:21,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989759074] [2021-11-07 01:35:21,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:35:21,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:21,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:35:21,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:35:21,763 INFO L87 Difference]: Start difference. First operand 19992 states and 31724 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:24,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:24,256 INFO L93 Difference]: Finished difference Result 48967 states and 77961 transitions. [2021-11-07 01:35:24,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:24,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 98 [2021-11-07 01:35:24,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:24,334 INFO L225 Difference]: With dead ends: 48967 [2021-11-07 01:35:24,335 INFO L226 Difference]: Without dead ends: 38781 [2021-11-07 01:35:24,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:35:24,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38781 states. [2021-11-07 01:35:26,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38781 to 20162. [2021-11-07 01:35:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20162 states, 20161 states have (on average 1.5819651802985963) internal successors, (31894), 20161 states have internal predecessors, (31894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20162 states to 20162 states and 31894 transitions. [2021-11-07 01:35:26,291 INFO L78 Accepts]: Start accepts. Automaton has 20162 states and 31894 transitions. Word has length 98 [2021-11-07 01:35:26,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:26,291 INFO L470 AbstractCegarLoop]: Abstraction has 20162 states and 31894 transitions. [2021-11-07 01:35:26,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:26,292 INFO L276 IsEmpty]: Start isEmpty. Operand 20162 states and 31894 transitions. [2021-11-07 01:35:26,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 01:35:26,303 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:26,304 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-07 01:35:26,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:26,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:26,519 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:35:26,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:26,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1665246660, now seen corresponding path program 1 times [2021-11-07 01:35:26,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:26,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035893011] [2021-11-07 01:35:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:26,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:26,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:26,522 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:26,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:35:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:27,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:35:27,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:35:27,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:28,181 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:35:28,181 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:28,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035893011] [2021-11-07 01:35:28,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035893011] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:28,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:28,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:35:28,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085110410] [2021-11-07 01:35:28,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:35:28,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:28,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:35:28,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:35:28,183 INFO L87 Difference]: Start difference. First operand 20162 states and 31894 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:36,537 INFO L93 Difference]: Finished difference Result 57803 states and 91682 transitions. [2021-11-07 01:35:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:35:36,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 100 [2021-11-07 01:35:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:36,617 INFO L225 Difference]: With dead ends: 57803 [2021-11-07 01:35:36,618 INFO L226 Difference]: Without dead ends: 37676 [2021-11-07 01:35:36,643 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:35:36,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37676 states. [2021-11-07 01:35:38,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37676 to 18491. [2021-11-07 01:35:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18491 states, 18490 states have (on average 1.5724175229853976) internal successors, (29074), 18490 states have internal predecessors, (29074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:38,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18491 states to 18491 states and 29074 transitions. [2021-11-07 01:35:38,133 INFO L78 Accepts]: Start accepts. Automaton has 18491 states and 29074 transitions. Word has length 100 [2021-11-07 01:35:38,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:38,134 INFO L470 AbstractCegarLoop]: Abstraction has 18491 states and 29074 transitions. [2021-11-07 01:35:38,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:38,134 INFO L276 IsEmpty]: Start isEmpty. Operand 18491 states and 29074 transitions. [2021-11-07 01:35:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 01:35:38,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:38,143 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 01:35:38,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:38,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:38,351 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:35:38,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:38,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1225114935, now seen corresponding path program 1 times [2021-11-07 01:35:38,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:38,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129197027] [2021-11-07 01:35:38,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:38,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:38,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:38,354 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:38,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:35:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:39,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 01:35:39,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:39,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:40,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:40,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129197027] [2021-11-07 01:35:40,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129197027] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:40,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:40,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-07 01:35:40,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896450412] [2021-11-07 01:35:40,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:35:40,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:35:40,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:35:40,423 INFO L87 Difference]: Start difference. First operand 18491 states and 29074 transitions. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:47,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:47,642 INFO L93 Difference]: Finished difference Result 61397 states and 97030 transitions. [2021-11-07 01:35:47,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:35:47,643 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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 101 [2021-11-07 01:35:47,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:47,710 INFO L225 Difference]: With dead ends: 61397 [2021-11-07 01:35:47,710 INFO L226 Difference]: Without dead ends: 43364 [2021-11-07 01:35:47,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2021-11-07 01:35:47,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43364 states. [2021-11-07 01:35:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43364 to 18491. [2021-11-07 01:35:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18491 states, 18490 states have (on average 1.5711195240670632) internal successors, (29050), 18490 states have internal predecessors, (29050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18491 states to 18491 states and 29050 transitions. [2021-11-07 01:35:49,399 INFO L78 Accepts]: Start accepts. Automaton has 18491 states and 29050 transitions. Word has length 101 [2021-11-07 01:35:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:49,400 INFO L470 AbstractCegarLoop]: Abstraction has 18491 states and 29050 transitions. [2021-11-07 01:35:49,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:49,400 INFO L276 IsEmpty]: Start isEmpty. Operand 18491 states and 29050 transitions. [2021-11-07 01:35:49,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 01:35:49,407 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:49,407 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:49,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 01:35:49,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:49,608 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:35:49,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:49,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1918222064, now seen corresponding path program 1 times [2021-11-07 01:35:49,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:49,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225810636] [2021-11-07 01:35:49,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:49,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:49,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:49,611 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:49,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:35:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:50,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:35:50,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:51,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:51,648 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:51,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225810636] [2021-11-07 01:35:51,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225810636] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:51,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:51,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:35:51,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524385713] [2021-11-07 01:35:51,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:35:51,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:51,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:35:51,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:35:51,650 INFO L87 Difference]: Start difference. First operand 18491 states and 29050 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:13,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:13,527 INFO L93 Difference]: Finished difference Result 141300 states and 223572 transitions. [2021-11-07 01:36:13,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:36:13,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 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 105 [2021-11-07 01:36:13,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:13,709 INFO L225 Difference]: With dead ends: 141300 [2021-11-07 01:36:13,709 INFO L226 Difference]: Without dead ends: 131459 [2021-11-07 01:36:13,730 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:36:13,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131459 states. [2021-11-07 01:36:19,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131459 to 57163. [2021-11-07 01:36:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57163 states, 57162 states have (on average 1.5727581260277808) internal successors, (89902), 57162 states have internal predecessors, (89902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:19,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57163 states to 57163 states and 89902 transitions. [2021-11-07 01:36:19,126 INFO L78 Accepts]: Start accepts. Automaton has 57163 states and 89902 transitions. Word has length 105 [2021-11-07 01:36:19,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:19,126 INFO L470 AbstractCegarLoop]: Abstraction has 57163 states and 89902 transitions. [2021-11-07 01:36:19,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:19,127 INFO L276 IsEmpty]: Start isEmpty. Operand 57163 states and 89902 transitions. [2021-11-07 01:36:19,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 01:36:19,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:19,136 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:19,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:19,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:19,359 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:36:19,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:19,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2129132975, now seen corresponding path program 1 times [2021-11-07 01:36:19,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:19,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661910921] [2021-11-07 01:36:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:19,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:19,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:19,362 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:19,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d3d8a1-80a8-4a7f-9e65-97e7a7a25079/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:36:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:20,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:36:20,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:36:20,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:36:21,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:21,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661910921] [2021-11-07 01:36:21,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661910921] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:21,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:21,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:36:21,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450329674] [2021-11-07 01:36:21,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:36:21,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:21,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:36:21,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:36:21,040 INFO L87 Difference]: Start difference. First operand 57163 states and 89902 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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)