./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/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 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:32:09,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:32:09,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:32:09,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:32:09,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:32:09,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:32:09,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:32:09,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:32:09,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:32:09,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:32:09,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:32:09,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:32:09,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:32:09,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:32:09,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:32:09,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:32:09,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:32:09,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:32:09,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:32:09,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:32:09,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:32:09,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:32:09,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:32:09,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:32:09,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:32:09,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:32:09,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:32:09,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:32:09,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:32:09,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:32:09,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:32:09,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:32:09,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:32:09,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:32:09,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:32:09,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:32:09,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:32:09,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:32:09,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:32:09,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:32:09,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:32:09,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:32:09,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:32:09,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:32:09,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:32:09,794 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:32:09,794 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:32:09,795 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:32:09,795 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:32:09,795 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:32:09,796 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:32:09,796 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:32:09,796 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:32:09,796 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:32:09,796 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:32:09,797 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:32:09,797 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:32:09,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:32:09,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:32:09,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:32:09,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:32:09,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:32:09,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:32:09,799 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:32:09,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:32:09,800 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:32:09,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:32:09,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:32:09,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:32:09,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:32:09,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:32:09,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:32:09,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:32:09,802 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:32:09,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:32:09,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:32:09,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:32:09,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:32:09,803 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2021-11-07 01:32:10,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:32:10,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:32:10,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:32:10,147 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:32:10,149 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:32:10,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-07 01:32:10,290 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/data/be33a874d/e73b5e3533de40fa8e720eb5bc5004d2/FLAGd15a31654 [2021-11-07 01:32:11,509 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:32:11,510 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-07 01:32:11,592 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/data/be33a874d/e73b5e3533de40fa8e720eb5bc5004d2/FLAGd15a31654 [2021-11-07 01:32:11,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/data/be33a874d/e73b5e3533de40fa8e720eb5bc5004d2 [2021-11-07 01:32:11,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:32:11,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:32:11,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:32:11,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:32:11,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:32:11,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:32:11" (1/1) ... [2021-11-07 01:32:11,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d16ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:11, skipping insertion in model container [2021-11-07 01:32:11,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:32:11" (1/1) ... [2021-11-07 01:32:11,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:32:11,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:32:14,330 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 01:32:14,332 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 01:32:15,578 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-07 01:32:15,581 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-07 01:32:15,582 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-07 01:32:15,583 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-07 01:32:15,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:32:15,672 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 01:32:15,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54b2c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:15, skipping insertion in model container [2021-11-07 01:32:15,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:32:15,673 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:32:15,676 INFO L168 Benchmark]: Toolchain (without parser) took 3970.31 ms. Allocated memory was 107.0 MB in the beginning and 148.9 MB in the end (delta: 41.9 MB). Free memory was 76.0 MB in the beginning and 92.0 MB in the end (delta: -16.0 MB). Peak memory consumption was 61.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:15,676 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 43.9 MB in the beginning and 43.8 MB in the end (delta: 41.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:32:15,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3967.39 ms. Allocated memory was 107.0 MB in the beginning and 148.9 MB in the end (delta: 41.9 MB). Free memory was 76.0 MB in the beginning and 92.0 MB in the end (delta: -16.0 MB). Peak memory consumption was 61.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:15,680 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 43.9 MB in the beginning and 43.8 MB in the end (delta: 41.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3967.39 ms. Allocated memory was 107.0 MB in the beginning and 148.9 MB in the end (delta: 41.9 MB). Free memory was 76.0 MB in the beginning and 92.0 MB in the end (delta: -16.0 MB). Peak memory consumption was 61.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6377]: 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/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 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:32:18,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:32:18,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:32:18,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:32:18,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:32:18,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:32:18,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:32:18,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:32:18,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:32:18,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:32:18,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:32:18,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:32:18,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:32:18,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:32:18,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:32:18,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:32:18,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:32:18,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:32:18,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:32:18,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:32:18,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:32:18,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:32:18,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:32:18,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:32:18,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:32:18,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:32:18,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:32:18,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:32:18,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:32:18,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:32:18,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:32:18,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:32:18,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:32:18,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:32:18,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:32:18,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:32:18,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:32:18,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:32:18,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:32:18,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:32:18,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:32:18,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:32:18,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:32:18,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:32:18,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:32:18,589 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:32:18,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:32:18,590 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:32:18,590 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:32:18,590 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:32:18,591 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:32:18,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:32:18,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:32:18,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:32:18,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:32:18,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:32:18,595 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:32:18,595 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:32:18,596 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:32:18,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:32:18,596 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:32:18,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:32:18,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:32:18,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:32:18,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:32:18,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:32:18,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:32:18,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:32:18,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:32:18,599 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:32:18,600 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:32:18,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:32:18,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:32:18,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:32:18,601 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2021-11-07 01:32:19,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:32:19,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:32:19,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:32:19,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:32:19,089 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:32:19,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-07 01:32:19,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/data/dce82c4ff/8f343f6731de40e0a69d789f8d156f51/FLAG2351ff628 [2021-11-07 01:32:20,554 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:32:20,557 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-07 01:32:20,637 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/data/dce82c4ff/8f343f6731de40e0a69d789f8d156f51/FLAG2351ff628 [2021-11-07 01:32:20,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/data/dce82c4ff/8f343f6731de40e0a69d789f8d156f51 [2021-11-07 01:32:20,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:32:20,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:32:20,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:32:20,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:32:20,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:32:20,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:32:20" (1/1) ... [2021-11-07 01:32:20,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bbbd5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:20, skipping insertion in model container [2021-11-07 01:32:20,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:32:20" (1/1) ... [2021-11-07 01:32:20,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:32:20,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:32:24,574 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-07 01:32:24,578 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-07 01:32:24,578 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-07 01:32:24,579 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-07 01:32:24,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:32:24,651 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:32:24,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:32:25,331 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-07 01:32:25,331 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-07 01:32:25,332 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-07 01:32:25,333 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-07 01:32:25,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:32:25,400 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:32:25,951 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-07 01:32:25,952 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-07 01:32:25,953 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-07 01:32:25,955 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_6095fd07-b253-4ad1-b7fd-103aee0e5b92/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-07 01:32:25,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:32:26,309 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:32:26,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:26 WrapperNode [2021-11-07 01:32:26,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:32:26,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:32:26,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:32:26,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:32:26,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:26" (1/1) ... [2021-11-07 01:32:26,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:26" (1/1) ... [2021-11-07 01:32:27,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:32:27,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:32:27,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:32:27,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:32:27,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:26" (1/1) ... [2021-11-07 01:32:27,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:26" (1/1) ... [2021-11-07 01:32:27,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:26" (1/1) ... [2021-11-07 01:32:27,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:26" (1/1) ... [2021-11-07 01:32:27,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:26" (1/1) ... [2021-11-07 01:32:27,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:26" (1/1) ... [2021-11-07 01:32:27,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:26" (1/1) ... [2021-11-07 01:32:27,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:32:27,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:32:27,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:32:27,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:32:27,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:26" (1/1) ... [2021-11-07 01:32:28,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:32:28,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:32:28,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:32:28,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:32:28,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:32:28,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:32:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:32:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:32:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:32:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:32:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:32:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:32:28,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:32:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:32:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:32:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:32:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:32:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:32:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:32:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:32:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:32:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:32:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:32:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:32:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2021-11-07 01:32:28,111 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2021-11-07 01:34:49,301 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0bv32; [2021-11-07 01:34:49,301 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0bv32; [2021-11-07 01:34:49,302 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0bv32; [2021-11-07 01:34:49,302 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0bv32; [2021-11-07 01:34:49,302 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0bv32; [2021-11-07 01:34:49,303 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0bv32; [2021-11-07 01:34:49,304 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 01:34:51,181 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:34:51,181 INFO L299 CfgBuilder]: Removed 3411 assume(true) statements. [2021-11-07 01:34:51,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:51 BoogieIcfgContainer [2021-11-07 01:34:51,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:34:51,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:34:51,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:34:51,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:34:51,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:32:20" (1/3) ... [2021-11-07 01:34:51,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ccf975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:51, skipping insertion in model container [2021-11-07 01:34:51,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:26" (2/3) ... [2021-11-07 01:34:51,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ccf975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:51, skipping insertion in model container [2021-11-07 01:34:51,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:51" (3/3) ... [2021-11-07 01:34:51,199 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-07 01:34:51,204 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:34:51,205 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-11-07 01:34:51,269 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:34:51,275 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 01:34:51,275 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-11-07 01:34:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 3031 states, 2960 states have (on average 1.3179054054054054) internal successors, (3901), 3026 states have internal predecessors, (3901), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 01:34:51,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:34:51,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:51,361 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:51,362 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:34:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:51,368 INFO L85 PathProgramCache]: Analyzing trace with hash 619962046, now seen corresponding path program 1 times [2021-11-07 01:34:51,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:51,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293802599] [2021-11-07 01:34:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:51,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:51,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:51,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:51,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:34:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:57,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 2658 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:34:57,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:57,732 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 01:34:57,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:57,949 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 01:34:57,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:57,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293802599] [2021-11-07 01:34:57,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293802599] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:57,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:57,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:34:57,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403241446] [2021-11-07 01:34:57,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:34:57,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:57,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:34:57,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:34:57,984 INFO L87 Difference]: Start difference. First operand has 3031 states, 2960 states have (on average 1.3179054054054054) internal successors, (3901), 3026 states have internal predecessors, (3901), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 01:35:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:01,450 INFO L93 Difference]: Finished difference Result 11326 states and 14621 transitions. [2021-11-07 01:35:01,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:35:01,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 01:35:01,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:01,527 INFO L225 Difference]: With dead ends: 11326 [2021-11-07 01:35:01,527 INFO L226 Difference]: Without dead ends: 8115 [2021-11-07 01:35:01,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 104 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 01:35:01,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2021-11-07 01:35:02,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 7991. [2021-11-07 01:35:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7991 states, 7912 states have (on average 1.268958543983822) internal successors, (10040), 7978 states have internal predecessors, (10040), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-07 01:35:02,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7991 states to 7991 states and 10058 transitions. [2021-11-07 01:35:02,143 INFO L78 Accepts]: Start accepts. Automaton has 7991 states and 10058 transitions. Word has length 54 [2021-11-07 01:35:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:02,144 INFO L470 AbstractCegarLoop]: Abstraction has 7991 states and 10058 transitions. [2021-11-07 01:35:02,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 01:35:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 7991 states and 10058 transitions. [2021-11-07 01:35:02,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:35:02,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:02,158 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:02,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:02,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:02,359 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:35:02,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:02,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1150160792, now seen corresponding path program 1 times [2021-11-07 01:35:02,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:02,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534015038] [2021-11-07 01:35:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:02,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:02,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:02,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:02,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:35:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:09,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:09,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:09,801 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 01:35:09,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:10,063 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 01:35:10,063 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:10,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534015038] [2021-11-07 01:35:10,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534015038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:10,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:10,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:35:10,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244881371] [2021-11-07 01:35:10,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:35:10,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:10,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:35:10,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:35:10,068 INFO L87 Difference]: Start difference. First operand 7991 states and 10058 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:13,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:13,077 INFO L93 Difference]: Finished difference Result 14734 states and 18563 transitions. [2021-11-07 01:35:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:35:13,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 01:35:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:13,119 INFO L225 Difference]: With dead ends: 14734 [2021-11-07 01:35:13,120 INFO L226 Difference]: Without dead ends: 6843 [2021-11-07 01:35:13,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:35:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6843 states. [2021-11-07 01:35:13,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6843 to 6843. [2021-11-07 01:35:13,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6843 states, 6768 states have (on average 1.2687647754137117) internal successors, (8587), 6830 states have internal predecessors, (8587), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-07 01:35:13,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6843 states to 6843 states and 8605 transitions. [2021-11-07 01:35:13,576 INFO L78 Accepts]: Start accepts. Automaton has 6843 states and 8605 transitions. Word has length 59 [2021-11-07 01:35:13,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:13,578 INFO L470 AbstractCegarLoop]: Abstraction has 6843 states and 8605 transitions. [2021-11-07 01:35:13,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:13,578 INFO L276 IsEmpty]: Start isEmpty. Operand 6843 states and 8605 transitions. [2021-11-07 01:35:13,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:35:13,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:13,580 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:13,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:13,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:13,781 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:35:13,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:13,781 INFO L85 PathProgramCache]: Analyzing trace with hash -148878727, now seen corresponding path program 1 times [2021-11-07 01:35:13,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:13,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841735912] [2021-11-07 01:35:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:13,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:13,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:13,787 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:13,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:35:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:19,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:19,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:19,666 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 01:35:19,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:19,866 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 01:35:19,866 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:19,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841735912] [2021-11-07 01:35:19,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841735912] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:19,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:19,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:35:19,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775921452] [2021-11-07 01:35:19,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:35:19,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:19,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:35:19,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:35:19,869 INFO L87 Difference]: Start difference. First operand 6843 states and 8605 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:23,379 INFO L93 Difference]: Finished difference Result 18228 states and 22949 transitions. [2021-11-07 01:35:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:23,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 01:35:23,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:23,457 INFO L225 Difference]: With dead ends: 18228 [2021-11-07 01:35:23,458 INFO L226 Difference]: Without dead ends: 11485 [2021-11-07 01:35:23,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 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 01:35:23,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11485 states. [2021-11-07 01:35:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11485 to 11070. [2021-11-07 01:35:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11070 states, 10983 states have (on average 1.2730583629245198) internal successors, (13982), 11045 states have internal predecessors, (13982), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 01:35:24,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11070 states to 11070 states and 14018 transitions. [2021-11-07 01:35:24,116 INFO L78 Accepts]: Start accepts. Automaton has 11070 states and 14018 transitions. Word has length 59 [2021-11-07 01:35:24,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:24,117 INFO L470 AbstractCegarLoop]: Abstraction has 11070 states and 14018 transitions. [2021-11-07 01:35:24,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:24,119 INFO L276 IsEmpty]: Start isEmpty. Operand 11070 states and 14018 transitions. [2021-11-07 01:35:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:35:24,120 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:24,121 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:24,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:24,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:24,345 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:35:24,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:24,346 INFO L85 PathProgramCache]: Analyzing trace with hash 589305686, now seen corresponding path program 1 times [2021-11-07 01:35:24,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:24,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372050406] [2021-11-07 01:35:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:24,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:24,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:24,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:24,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:35:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:30,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:30,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:30,628 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 01:35:30,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:30,886 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 01:35:30,887 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:30,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372050406] [2021-11-07 01:35:30,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372050406] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:30,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:30,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:35:30,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054588352] [2021-11-07 01:35:30,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:35:30,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:30,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:35:30,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:35:30,889 INFO L87 Difference]: Start difference. First operand 11070 states and 14018 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:34,133 INFO L93 Difference]: Finished difference Result 19752 states and 25046 transitions. [2021-11-07 01:35:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:35:34,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 01:35:34,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:34,187 INFO L225 Difference]: With dead ends: 19752 [2021-11-07 01:35:34,188 INFO L226 Difference]: Without dead ends: 8782 [2021-11-07 01:35:34,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 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 01:35:34,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8782 states. [2021-11-07 01:35:34,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8782 to 8782. [2021-11-07 01:35:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8782 states, 8699 states have (on average 1.2737096217956088) internal successors, (11080), 8757 states have internal predecessors, (11080), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 01:35:34,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8782 states to 8782 states and 11116 transitions. [2021-11-07 01:35:34,700 INFO L78 Accepts]: Start accepts. Automaton has 8782 states and 11116 transitions. Word has length 60 [2021-11-07 01:35:34,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:34,703 INFO L470 AbstractCegarLoop]: Abstraction has 8782 states and 11116 transitions. [2021-11-07 01:35:34,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:34,704 INFO L276 IsEmpty]: Start isEmpty. Operand 8782 states and 11116 transitions. [2021-11-07 01:35:34,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:35:34,714 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:34,714 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:34,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:34,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:34,929 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:35:34,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1539534065, now seen corresponding path program 1 times [2021-11-07 01:35:34,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:34,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219463891] [2021-11-07 01:35:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:34,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:34,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:34,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:34,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:35:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:40,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 2726 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:40,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:41,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:41,300 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:41,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219463891] [2021-11-07 01:35:41,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219463891] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:41,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:41,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:35:41,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897828424] [2021-11-07 01:35:41,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:35:41,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:41,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:35:41,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:35:41,302 INFO L87 Difference]: Start difference. First operand 8782 states and 11116 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 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 01:35:44,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:44,787 INFO L93 Difference]: Finished difference Result 20348 states and 25744 transitions. [2021-11-07 01:35:44,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:35:44,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 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 84 [2021-11-07 01:35:44,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:44,840 INFO L225 Difference]: With dead ends: 20348 [2021-11-07 01:35:44,840 INFO L226 Difference]: Without dead ends: 14472 [2021-11-07 01:35:44,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 164 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 01:35:44,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14472 states. [2021-11-07 01:35:45,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14472 to 14380. [2021-11-07 01:35:45,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14380 states, 14281 states have (on average 1.274840697430152) internal successors, (18206), 14339 states have internal predecessors, (18206), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 01:35:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14380 states to 14380 states and 18266 transitions. [2021-11-07 01:35:45,796 INFO L78 Accepts]: Start accepts. Automaton has 14380 states and 18266 transitions. Word has length 84 [2021-11-07 01:35:45,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:45,798 INFO L470 AbstractCegarLoop]: Abstraction has 14380 states and 18266 transitions. [2021-11-07 01:35:45,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 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 01:35:45,798 INFO L276 IsEmpty]: Start isEmpty. Operand 14380 states and 18266 transitions. [2021-11-07 01:35:45,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:35:45,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:45,801 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:45,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:46,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:46,001 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:35:46,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:46,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1391660714, now seen corresponding path program 1 times [2021-11-07 01:35:46,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:46,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357685416] [2021-11-07 01:35:46,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:46,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:46,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:46,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:46,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:35:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:51,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:35:51,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:52,418 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:35:52,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:35:53,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:53,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357685416] [2021-11-07 01:35:53,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357685416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:53,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:53,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:35:53,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143702351] [2021-11-07 01:35:53,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:35:53,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:53,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:35:53,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:35:53,184 INFO L87 Difference]: Start difference. First operand 14380 states and 18266 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 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 01:35:54,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:54,645 INFO L93 Difference]: Finished difference Result 14380 states and 18266 transitions. [2021-11-07 01:35:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:35:54,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-07 01:35:54,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:54,697 INFO L225 Difference]: With dead ends: 14380 [2021-11-07 01:35:54,697 INFO L226 Difference]: Without dead ends: 14374 [2021-11-07 01:35:54,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:35:54,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14374 states. [2021-11-07 01:35:55,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14374 to 14374. [2021-11-07 01:35:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14374 states, 14278 states have (on average 1.2746883316991175) internal successors, (18200), 14333 states have internal predecessors, (18200), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 01:35:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14374 states to 14374 states and 18260 transitions. [2021-11-07 01:35:55,622 INFO L78 Accepts]: Start accepts. Automaton has 14374 states and 18260 transitions. Word has length 84 [2021-11-07 01:35:55,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:55,622 INFO L470 AbstractCegarLoop]: Abstraction has 14374 states and 18260 transitions. [2021-11-07 01:35:55,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 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 01:35:55,623 INFO L276 IsEmpty]: Start isEmpty. Operand 14374 states and 18260 transitions. [2021-11-07 01:35:55,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 01:35:55,625 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:55,625 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:55,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:55,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:55,841 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:35:55,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:55,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1650967527, now seen corresponding path program 1 times [2021-11-07 01:35:55,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:55,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043805657] [2021-11-07 01:35:55,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:55,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:55,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:55,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:55,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:36:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:01,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:36:01,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:36:02,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:36:02,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:02,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043805657] [2021-11-07 01:36:02,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043805657] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:02,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:02,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:36:02,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68300776] [2021-11-07 01:36:02,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:36:02,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:02,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:36:02,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:36:02,947 INFO L87 Difference]: Start difference. First operand 14374 states and 18260 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:04,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:04,324 INFO L93 Difference]: Finished difference Result 14374 states and 18260 transitions. [2021-11-07 01:36:04,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:36:04,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-07 01:36:04,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:04,370 INFO L225 Difference]: With dead ends: 14374 [2021-11-07 01:36:04,370 INFO L226 Difference]: Without dead ends: 14368 [2021-11-07 01:36:04,378 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:36:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14368 states. [2021-11-07 01:36:05,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14368 to 14368. [2021-11-07 01:36:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14368 states, 14275 states have (on average 1.2745359019264448) internal successors, (18194), 14327 states have internal predecessors, (18194), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 01:36:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14368 states to 14368 states and 18254 transitions. [2021-11-07 01:36:05,270 INFO L78 Accepts]: Start accepts. Automaton has 14368 states and 18254 transitions. Word has length 86 [2021-11-07 01:36:05,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:05,270 INFO L470 AbstractCegarLoop]: Abstraction has 14368 states and 18254 transitions. [2021-11-07 01:36:05,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:05,271 INFO L276 IsEmpty]: Start isEmpty. Operand 14368 states and 18254 transitions. [2021-11-07 01:36:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 01:36:05,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:05,273 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:05,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:05,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:05,497 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:36:05,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:05,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1736711332, now seen corresponding path program 1 times [2021-11-07 01:36:05,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:05,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390272961] [2021-11-07 01:36:05,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:05,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:05,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:05,504 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:05,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:36:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:11,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:36:11,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:36:12,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:36:12,750 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:12,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390272961] [2021-11-07 01:36:12,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390272961] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:12,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:12,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:36:12,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324585392] [2021-11-07 01:36:12,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:36:12,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:12,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:36:12,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:36:12,753 INFO L87 Difference]: Start difference. First operand 14368 states and 18254 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 01:36:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:13,962 INFO L93 Difference]: Finished difference Result 14368 states and 18254 transitions. [2021-11-07 01:36:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:36:13,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 88 [2021-11-07 01:36:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:14,001 INFO L225 Difference]: With dead ends: 14368 [2021-11-07 01:36:14,001 INFO L226 Difference]: Without dead ends: 14362 [2021-11-07 01:36:14,009 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:36:14,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14362 states. [2021-11-07 01:36:15,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14362 to 14362. [2021-11-07 01:36:15,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14362 states, 14272 states have (on average 1.2743834080717489) internal successors, (18188), 14321 states have internal predecessors, (18188), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 01:36:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14362 states to 14362 states and 18248 transitions. [2021-11-07 01:36:15,073 INFO L78 Accepts]: Start accepts. Automaton has 14362 states and 18248 transitions. Word has length 88 [2021-11-07 01:36:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:15,073 INFO L470 AbstractCegarLoop]: Abstraction has 14362 states and 18248 transitions. [2021-11-07 01:36:15,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 01:36:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 14362 states and 18248 transitions. [2021-11-07 01:36:15,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 01:36:15,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:15,077 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:15,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:15,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:15,293 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:36:15,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1762838303, now seen corresponding path program 1 times [2021-11-07 01:36:15,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:15,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357241017] [2021-11-07 01:36:15,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:15,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:15,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:15,397 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:15,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:36:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:21,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:36:21,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:36:21,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:36:22,542 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:22,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357241017] [2021-11-07 01:36:22,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357241017] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:22,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:22,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:36:22,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393561700] [2021-11-07 01:36:22,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:36:22,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:22,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:36:22,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:36:22,545 INFO L87 Difference]: Start difference. First operand 14362 states and 18248 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:23,636 INFO L93 Difference]: Finished difference Result 14362 states and 18248 transitions. [2021-11-07 01:36:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:36:23,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-07 01:36:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:23,670 INFO L225 Difference]: With dead ends: 14362 [2021-11-07 01:36:23,670 INFO L226 Difference]: Without dead ends: 14356 [2021-11-07 01:36:23,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:36:23,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14356 states. [2021-11-07 01:36:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14356 to 14356. [2021-11-07 01:36:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14356 states, 14269 states have (on average 1.2742308500946107) internal successors, (18182), 14315 states have internal predecessors, (18182), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 01:36:24,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14356 states to 14356 states and 18242 transitions. [2021-11-07 01:36:24,852 INFO L78 Accepts]: Start accepts. Automaton has 14356 states and 18242 transitions. Word has length 90 [2021-11-07 01:36:24,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:24,853 INFO L470 AbstractCegarLoop]: Abstraction has 14356 states and 18242 transitions. [2021-11-07 01:36:24,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:24,853 INFO L276 IsEmpty]: Start isEmpty. Operand 14356 states and 18242 transitions. [2021-11-07 01:36:24,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 01:36:24,856 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:24,856 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:24,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:25,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:25,081 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:36:25,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:25,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1870645090, now seen corresponding path program 1 times [2021-11-07 01:36:25,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:25,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345084241] [2021-11-07 01:36:25,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:25,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:25,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:25,086 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:25,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:36:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:30,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:36:30,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:36:31,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:36:32,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:32,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345084241] [2021-11-07 01:36:32,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345084241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:32,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:32,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:36:32,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794071531] [2021-11-07 01:36:32,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:36:32,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:32,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:36:32,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:36:32,341 INFO L87 Difference]: Start difference. First operand 14356 states and 18242 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:33,687 INFO L93 Difference]: Finished difference Result 14356 states and 18242 transitions. [2021-11-07 01:36:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:36:33,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 01:36:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:33,705 INFO L225 Difference]: With dead ends: 14356 [2021-11-07 01:36:33,706 INFO L226 Difference]: Without dead ends: 14350 [2021-11-07 01:36:33,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:36:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14350 states. [2021-11-07 01:36:35,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14350 to 14350. [2021-11-07 01:36:35,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14350 states, 14266 states have (on average 1.2740782279545773) internal successors, (18176), 14309 states have internal predecessors, (18176), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 01:36:35,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14350 states to 14350 states and 18236 transitions. [2021-11-07 01:36:35,126 INFO L78 Accepts]: Start accepts. Automaton has 14350 states and 18236 transitions. Word has length 92 [2021-11-07 01:36:35,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:35,126 INFO L470 AbstractCegarLoop]: Abstraction has 14350 states and 18236 transitions. [2021-11-07 01:36:35,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:35,127 INFO L276 IsEmpty]: Start isEmpty. Operand 14350 states and 18236 transitions. [2021-11-07 01:36:35,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 01:36:35,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:35,129 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:35,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-07 01:36:35,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:35,336 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:36:35,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:35,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1901214683, now seen corresponding path program 1 times [2021-11-07 01:36:35,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:35,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140154306] [2021-11-07 01:36:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:35,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:35,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:35,342 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:35,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:36:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:41,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:36:41,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:36:42,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:36:43,187 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:43,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140154306] [2021-11-07 01:36:43,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140154306] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:43,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:43,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:36:43,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366304369] [2021-11-07 01:36:43,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:36:43,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:43,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:36:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:36:43,189 INFO L87 Difference]: Start difference. First operand 14350 states and 18236 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 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 01:36:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:44,510 INFO L93 Difference]: Finished difference Result 14350 states and 18236 transitions. [2021-11-07 01:36:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:36:44,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-07 01:36:44,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:44,528 INFO L225 Difference]: With dead ends: 14350 [2021-11-07 01:36:44,528 INFO L226 Difference]: Without dead ends: 14344 [2021-11-07 01:36:44,533 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:36:44,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14344 states. [2021-11-07 01:36:45,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14344 to 14344. [2021-11-07 01:36:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14344 states, 14263 states have (on average 1.2739255416111617) internal successors, (18170), 14303 states have internal predecessors, (18170), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 01:36:45,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14344 states to 14344 states and 18230 transitions. [2021-11-07 01:36:45,769 INFO L78 Accepts]: Start accepts. Automaton has 14344 states and 18230 transitions. Word has length 94 [2021-11-07 01:36:45,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:45,769 INFO L470 AbstractCegarLoop]: Abstraction has 14344 states and 18230 transitions. [2021-11-07 01:36:45,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 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 01:36:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 14344 states and 18230 transitions. [2021-11-07 01:36:45,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:36:45,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:45,772 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:45,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 01:36:45,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:45,972 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:36:45,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:45,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1706058392, now seen corresponding path program 1 times [2021-11-07 01:36:45,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:45,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087080832] [2021-11-07 01:36:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:45,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:45,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:45,979 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:45,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:36:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:52,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:36:52,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:36:52,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:36:53,492 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:53,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087080832] [2021-11-07 01:36:53,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087080832] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:53,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:53,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:36:53,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582094489] [2021-11-07 01:36:53,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:36:53,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:53,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:36:53,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:36:53,494 INFO L87 Difference]: Start difference. First operand 14344 states and 18230 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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 01:36:54,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:54,981 INFO L93 Difference]: Finished difference Result 14344 states and 18230 transitions. [2021-11-07 01:36:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:36:54,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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 01:36:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:54,998 INFO L225 Difference]: With dead ends: 14344 [2021-11-07 01:36:54,999 INFO L226 Difference]: Without dead ends: 14338 [2021-11-07 01:36:55,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:36:55,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14338 states. [2021-11-07 01:36:55,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14338 to 14338. [2021-11-07 01:36:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14338 states, 14260 states have (on average 1.273772791023843) internal successors, (18164), 14297 states have internal predecessors, (18164), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 01:36:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14338 states to 14338 states and 18224 transitions. [2021-11-07 01:36:55,911 INFO L78 Accepts]: Start accepts. Automaton has 14338 states and 18224 transitions. Word has length 96 [2021-11-07 01:36:55,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:55,911 INFO L470 AbstractCegarLoop]: Abstraction has 14338 states and 18224 transitions. [2021-11-07 01:36:55,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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 01:36:55,912 INFO L276 IsEmpty]: Start isEmpty. Operand 14338 states and 18224 transitions. [2021-11-07 01:36:55,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 01:36:55,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:55,914 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:55,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:56,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:56,115 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:36:56,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:56,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1155543851, now seen corresponding path program 1 times [2021-11-07 01:36:56,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:56,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403886697] [2021-11-07 01:36:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:56,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:56,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:56,119 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:56,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:37:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:01,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:37:01,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:37:02,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:37:03,056 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:03,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403886697] [2021-11-07 01:37:03,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403886697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:03,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:03,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:37:03,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404785531] [2021-11-07 01:37:03,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:03,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:03,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:03,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:03,058 INFO L87 Difference]: Start difference. First operand 14338 states and 18224 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 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 01:37:04,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:04,503 INFO L93 Difference]: Finished difference Result 14338 states and 18224 transitions. [2021-11-07 01:37:04,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:37:04,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 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 98 [2021-11-07 01:37:04,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:04,519 INFO L225 Difference]: With dead ends: 14338 [2021-11-07 01:37:04,520 INFO L226 Difference]: Without dead ends: 14332 [2021-11-07 01:37:04,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:37:04,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14332 states. [2021-11-07 01:37:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14332 to 14332. [2021-11-07 01:37:05,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14332 states, 14257 states have (on average 1.2736199761520657) internal successors, (18158), 14291 states have internal predecessors, (18158), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 01:37:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14332 states to 14332 states and 18218 transitions. [2021-11-07 01:37:05,478 INFO L78 Accepts]: Start accepts. Automaton has 14332 states and 18218 transitions. Word has length 98 [2021-11-07 01:37:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:05,479 INFO L470 AbstractCegarLoop]: Abstraction has 14332 states and 18218 transitions. [2021-11-07 01:37:05,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 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 01:37:05,479 INFO L276 IsEmpty]: Start isEmpty. Operand 14332 states and 18218 transitions. [2021-11-07 01:37:05,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 01:37:05,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:05,482 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:37:05,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:05,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:05,705 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:37:05,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:05,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1918737042, now seen corresponding path program 1 times [2021-11-07 01:37:05,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:05,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984960243] [2021-11-07 01:37:05,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:05,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:05,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:05,711 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:05,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:37:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:11,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:37:11,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:37:12,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:37:13,090 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:13,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984960243] [2021-11-07 01:37:13,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984960243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:13,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:13,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:37:13,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809945836] [2021-11-07 01:37:13,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:13,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:13,093 INFO L87 Difference]: Start difference. First operand 14332 states and 18218 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 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 01:37:14,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:14,514 INFO L93 Difference]: Finished difference Result 14332 states and 18218 transitions. [2021-11-07 01:37:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:37:14,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 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 100 [2021-11-07 01:37:14,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:14,538 INFO L225 Difference]: With dead ends: 14332 [2021-11-07 01:37:14,538 INFO L226 Difference]: Without dead ends: 14326 [2021-11-07 01:37:14,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:37:14,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14326 states. [2021-11-07 01:37:15,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14326 to 14326. [2021-11-07 01:37:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14326 states, 14254 states have (on average 1.2734670969552406) internal successors, (18152), 14285 states have internal predecessors, (18152), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 01:37:15,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14326 states to 14326 states and 18212 transitions. [2021-11-07 01:37:15,559 INFO L78 Accepts]: Start accepts. Automaton has 14326 states and 18212 transitions. Word has length 100 [2021-11-07 01:37:15,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:15,559 INFO L470 AbstractCegarLoop]: Abstraction has 14326 states and 18212 transitions. [2021-11-07 01:37:15,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 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 01:37:15,559 INFO L276 IsEmpty]: Start isEmpty. Operand 14326 states and 18212 transitions. [2021-11-07 01:37:15,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 01:37:15,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:15,563 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:37:15,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:15,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:15,785 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:37:15,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:15,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1365175247, now seen corresponding path program 1 times [2021-11-07 01:37:15,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:15,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802258995] [2021-11-07 01:37:15,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:15,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:15,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:15,790 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:15,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:37:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:21,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:37:21,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:37:22,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:23,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:37:23,522 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:23,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802258995] [2021-11-07 01:37:23,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802258995] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:23,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:23,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:37:23,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206045380] [2021-11-07 01:37:23,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:23,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:23,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:23,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:23,524 INFO L87 Difference]: Start difference. First operand 14326 states and 18212 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 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 01:37:25,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:25,116 INFO L93 Difference]: Finished difference Result 14326 states and 18212 transitions. [2021-11-07 01:37:25,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:37:25,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 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 102 [2021-11-07 01:37:25,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:25,135 INFO L225 Difference]: With dead ends: 14326 [2021-11-07 01:37:25,135 INFO L226 Difference]: Without dead ends: 14320 [2021-11-07 01:37:25,139 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:37:25,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14320 states. [2021-11-07 01:37:26,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14320 to 14320. [2021-11-07 01:37:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14320 states, 14251 states have (on average 1.2733141533927443) internal successors, (18146), 14279 states have internal predecessors, (18146), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 01:37:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14320 states to 14320 states and 18206 transitions. [2021-11-07 01:37:26,225 INFO L78 Accepts]: Start accepts. Automaton has 14320 states and 18206 transitions. Word has length 102 [2021-11-07 01:37:26,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:26,226 INFO L470 AbstractCegarLoop]: Abstraction has 14320 states and 18206 transitions. [2021-11-07 01:37:26,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 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 01:37:26,226 INFO L276 IsEmpty]: Start isEmpty. Operand 14320 states and 18206 transitions. [2021-11-07 01:37:26,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 01:37:26,229 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:26,230 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:37:26,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:26,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:26,442 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:37:26,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:26,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1968234636, now seen corresponding path program 1 times [2021-11-07 01:37:26,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:26,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688437429] [2021-11-07 01:37:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:26,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:26,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:26,447 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:26,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:37:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:32,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 2727 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:37:32,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:37:32,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:37:33,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:33,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688437429] [2021-11-07 01:37:33,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688437429] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:33,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:33,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:37:33,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156569197] [2021-11-07 01:37:33,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:33,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:33,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:33,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:33,810 INFO L87 Difference]: Start difference. First operand 14320 states and 18206 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 01:37:35,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:35,340 INFO L93 Difference]: Finished difference Result 14320 states and 18206 transitions. [2021-11-07 01:37:35,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:37:35,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 104 [2021-11-07 01:37:35,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:35,355 INFO L225 Difference]: With dead ends: 14320 [2021-11-07 01:37:35,355 INFO L226 Difference]: Without dead ends: 14314 [2021-11-07 01:37:35,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:37:35,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14314 states. [2021-11-07 01:37:36,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14314 to 14314. [2021-11-07 01:37:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14314 states, 14248 states have (on average 1.2731611454239191) internal successors, (18140), 14273 states have internal predecessors, (18140), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 01:37:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14314 states to 14314 states and 18200 transitions. [2021-11-07 01:37:36,499 INFO L78 Accepts]: Start accepts. Automaton has 14314 states and 18200 transitions. Word has length 104 [2021-11-07 01:37:36,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:36,499 INFO L470 AbstractCegarLoop]: Abstraction has 14314 states and 18200 transitions. [2021-11-07 01:37:36,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 01:37:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 14314 states and 18200 transitions. [2021-11-07 01:37:36,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:37:36,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:36,504 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:37:36,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:36,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:36,729 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:37:36,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:36,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1687722185, now seen corresponding path program 1 times [2021-11-07 01:37:36,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:36,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411235603] [2021-11-07 01:37:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:36,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:36,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:36,734 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:36,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:37:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:42,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:37:42,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:37:43,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:37:44,154 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:44,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411235603] [2021-11-07 01:37:44,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411235603] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:44,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:44,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:37:44,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339325094] [2021-11-07 01:37:44,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:44,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:44,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:44,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:44,156 INFO L87 Difference]: Start difference. First operand 14314 states and 18200 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:45,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:45,873 INFO L93 Difference]: Finished difference Result 14314 states and 18200 transitions. [2021-11-07 01:37:45,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:37:45,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-07 01:37:45,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:45,889 INFO L225 Difference]: With dead ends: 14314 [2021-11-07 01:37:45,889 INFO L226 Difference]: Without dead ends: 14222 [2021-11-07 01:37:45,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:37:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14222 states. [2021-11-07 01:37:46,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14222 to 8632. [2021-11-07 01:37:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8632 states, 8585 states have (on average 1.2728013977868375) internal successors, (10927), 8607 states have internal predecessors, (10927), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 01:37:46,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8632 states to 8632 states and 10963 transitions. [2021-11-07 01:37:46,666 INFO L78 Accepts]: Start accepts. Automaton has 8632 states and 10963 transitions. Word has length 106 [2021-11-07 01:37:46,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:46,666 INFO L470 AbstractCegarLoop]: Abstraction has 8632 states and 10963 transitions. [2021-11-07 01:37:46,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:46,666 INFO L276 IsEmpty]: Start isEmpty. Operand 8632 states and 10963 transitions. [2021-11-07 01:37:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 01:37:46,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:46,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:37:46,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:46,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:46,893 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:37:46,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:46,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1775453187, now seen corresponding path program 1 times [2021-11-07 01:37:46,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:46,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557985809] [2021-11-07 01:37:46,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:46,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:46,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:46,900 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:46,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:37:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:53,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 2855 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:37:53,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:53,583 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 01:37:53,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:54,002 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 01:37:54,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:54,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557985809] [2021-11-07 01:37:54,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557985809] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:54,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:54,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:37:54,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830123120] [2021-11-07 01:37:54,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:54,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:54,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:54,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:54,004 INFO L87 Difference]: Start difference. First operand 8632 states and 10963 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 01:37:57,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:57,754 INFO L93 Difference]: Finished difference Result 17802 states and 22624 transitions. [2021-11-07 01:37:57,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:57,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 108 [2021-11-07 01:37:57,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:57,767 INFO L225 Difference]: With dead ends: 17802 [2021-11-07 01:37:57,767 INFO L226 Difference]: Without dead ends: 9270 [2021-11-07 01:37:57,788 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 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 01:37:57,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9270 states. [2021-11-07 01:37:58,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9270 to 9186. [2021-11-07 01:37:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9147 states have (on average 1.2709084945883897) internal successors, (11625), 9169 states have internal predecessors, (11625), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 01:37:58,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 11649 transitions. [2021-11-07 01:37:58,659 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 11649 transitions. Word has length 108 [2021-11-07 01:37:58,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:58,660 INFO L470 AbstractCegarLoop]: Abstraction has 9186 states and 11649 transitions. [2021-11-07 01:37:58,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 01:37:58,660 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 11649 transitions. [2021-11-07 01:37:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 01:37:58,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:58,665 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:37:58,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:58,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:58,875 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:37:58,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:58,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1051034662, now seen corresponding path program 1 times [2021-11-07 01:37:58,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:58,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543054097] [2021-11-07 01:37:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:58,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:58,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:58,880 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:58,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:38:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:05,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:38:05,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:05,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:06,519 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:06,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543054097] [2021-11-07 01:38:06,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543054097] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:06,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:06,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:38:06,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164136038] [2021-11-07 01:38:06,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:38:06,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:06,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:38:06,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:38:06,521 INFO L87 Difference]: Start difference. First operand 9186 states and 11649 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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 01:38:10,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:10,783 INFO L93 Difference]: Finished difference Result 23198 states and 29458 transitions. [2021-11-07 01:38:10,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:38:10,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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 156 [2021-11-07 01:38:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:10,801 INFO L225 Difference]: With dead ends: 23198 [2021-11-07 01:38:10,801 INFO L226 Difference]: Without dead ends: 14176 [2021-11-07 01:38:10,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 308 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 01:38:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14176 states. [2021-11-07 01:38:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14176 to 14092. [2021-11-07 01:38:12,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14092 states, 14053 states have (on average 1.271401124315093) internal successors, (17867), 14075 states have internal predecessors, (17867), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 01:38:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14092 states to 14092 states and 17891 transitions. [2021-11-07 01:38:12,142 INFO L78 Accepts]: Start accepts. Automaton has 14092 states and 17891 transitions. Word has length 156 [2021-11-07 01:38:12,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:12,142 INFO L470 AbstractCegarLoop]: Abstraction has 14092 states and 17891 transitions. [2021-11-07 01:38:12,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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 01:38:12,142 INFO L276 IsEmpty]: Start isEmpty. Operand 14092 states and 17891 transitions. [2021-11-07 01:38:12,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-07 01:38:12,146 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:12,147 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:38:12,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:12,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:12,369 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:38:12,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:12,370 INFO L85 PathProgramCache]: Analyzing trace with hash -612457845, now seen corresponding path program 1 times [2021-11-07 01:38:12,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:12,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191295107] [2021-11-07 01:38:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:12,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:12,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:12,376 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:12,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 01:38:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:18,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:38:18,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:38:19,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:38:20,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:20,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191295107] [2021-11-07 01:38:20,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191295107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:20,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:20,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:38:20,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707157211] [2021-11-07 01:38:20,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:38:20,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:38:20,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:38:20,340 INFO L87 Difference]: Start difference. First operand 14092 states and 17891 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 01:38:25,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:25,074 INFO L93 Difference]: Finished difference Result 31380 states and 39844 transitions. [2021-11-07 01:38:25,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:38:25,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 189 [2021-11-07 01:38:25,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:25,096 INFO L225 Difference]: With dead ends: 31380 [2021-11-07 01:38:25,096 INFO L226 Difference]: Without dead ends: 17452 [2021-11-07 01:38:25,109 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 374 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 01:38:25,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17452 states. [2021-11-07 01:38:26,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17452 to 17368. [2021-11-07 01:38:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17368 states, 17329 states have (on average 1.2713370650354896) internal successors, (22031), 17351 states have internal predecessors, (22031), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 01:38:26,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17368 states to 17368 states and 22055 transitions. [2021-11-07 01:38:26,943 INFO L78 Accepts]: Start accepts. Automaton has 17368 states and 22055 transitions. Word has length 189 [2021-11-07 01:38:26,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:26,944 INFO L470 AbstractCegarLoop]: Abstraction has 17368 states and 22055 transitions. [2021-11-07 01:38:26,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 01:38:26,944 INFO L276 IsEmpty]: Start isEmpty. Operand 17368 states and 22055 transitions. [2021-11-07 01:38:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-07 01:38:26,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:26,950 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:38:27,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-07 01:38:27,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:27,157 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:38:27,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:27,158 INFO L85 PathProgramCache]: Analyzing trace with hash 515327842, now seen corresponding path program 1 times [2021-11-07 01:38:27,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:27,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608366015] [2021-11-07 01:38:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:27,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:27,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:27,164 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:27,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:38:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:33,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:38:33,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:38:34,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:38:35,154 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:35,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608366015] [2021-11-07 01:38:35,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608366015] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:35,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:35,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:38:35,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423759602] [2021-11-07 01:38:35,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:38:35,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:35,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:38:35,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:38:35,156 INFO L87 Difference]: Start difference. First operand 17368 states and 22055 transitions. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 01:38:40,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:40,279 INFO L93 Difference]: Finished difference Result 37956 states and 48208 transitions. [2021-11-07 01:38:40,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:38:40,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 190 [2021-11-07 01:38:40,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:40,303 INFO L225 Difference]: With dead ends: 37956 [2021-11-07 01:38:40,304 INFO L226 Difference]: Without dead ends: 20752 [2021-11-07 01:38:40,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 376 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 01:38:40,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20752 states. [2021-11-07 01:38:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20752 to 20668. [2021-11-07 01:38:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20668 states, 20629 states have (on average 1.2713655533472297) internal successors, (26227), 20651 states have internal predecessors, (26227), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 01:38:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20668 states to 20668 states and 26251 transitions. [2021-11-07 01:38:42,729 INFO L78 Accepts]: Start accepts. Automaton has 20668 states and 26251 transitions. Word has length 190 [2021-11-07 01:38:42,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:42,729 INFO L470 AbstractCegarLoop]: Abstraction has 20668 states and 26251 transitions. [2021-11-07 01:38:42,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 01:38:42,729 INFO L276 IsEmpty]: Start isEmpty. Operand 20668 states and 26251 transitions. [2021-11-07 01:38:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-07 01:38:42,741 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:42,742 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:38:42,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:42,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:42,965 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:38:42,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:42,966 INFO L85 PathProgramCache]: Analyzing trace with hash -957563151, now seen corresponding path program 1 times [2021-11-07 01:38:42,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:42,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367899074] [2021-11-07 01:38:42,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:42,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:42,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:42,972 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:42,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:38:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:50,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 3356 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:38:50,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:38:51,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:38:52,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:52,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367899074] [2021-11-07 01:38:52,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367899074] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:52,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:52,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:38:52,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615954962] [2021-11-07 01:38:52,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:38:52,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:52,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:38:52,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:38:52,365 INFO L87 Difference]: Start difference. First operand 20668 states and 26251 transitions. Second operand has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:03,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:03,163 INFO L93 Difference]: Finished difference Result 76668 states and 97344 transitions. [2021-11-07 01:39:03,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:39:03,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-11-07 01:39:03,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:03,254 INFO L225 Difference]: With dead ends: 76668 [2021-11-07 01:39:03,255 INFO L226 Difference]: Without dead ends: 56164 [2021-11-07 01:39:03,279 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:39:03,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56164 states. [2021-11-07 01:39:07,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56164 to 20680. [2021-11-07 01:39:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20680 states, 20641 states have (on average 1.2712077903202363) internal successors, (26239), 20663 states have internal predecessors, (26239), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 01:39:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20680 states to 20680 states and 26263 transitions. [2021-11-07 01:39:07,361 INFO L78 Accepts]: Start accepts. Automaton has 20680 states and 26263 transitions. Word has length 235 [2021-11-07 01:39:07,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:07,361 INFO L470 AbstractCegarLoop]: Abstraction has 20680 states and 26263 transitions. [2021-11-07 01:39:07,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:07,362 INFO L276 IsEmpty]: Start isEmpty. Operand 20680 states and 26263 transitions. [2021-11-07 01:39:07,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-07 01:39:07,369 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:07,370 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:07,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:07,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:07,585 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:39:07,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:07,586 INFO L85 PathProgramCache]: Analyzing trace with hash -68524232, now seen corresponding path program 1 times [2021-11-07 01:39:07,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:07,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216027355] [2021-11-07 01:39:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:07,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:07,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:07,591 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:07,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 01:39:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:15,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:39:15,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:39:15,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:39:16,739 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:16,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216027355] [2021-11-07 01:39:16,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216027355] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:16,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:16,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:39:16,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468324763] [2021-11-07 01:39:16,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:39:16,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:16,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:39:16,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:39:16,741 INFO L87 Difference]: Start difference. First operand 20680 states and 26263 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 01:39:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:24,095 INFO L93 Difference]: Finished difference Result 42934 states and 54510 transitions. [2021-11-07 01:39:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:39:24,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 238 [2021-11-07 01:39:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:24,129 INFO L225 Difference]: With dead ends: 42934 [2021-11-07 01:39:24,129 INFO L226 Difference]: Without dead ends: 22418 [2021-11-07 01:39:24,147 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 472 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 01:39:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22418 states. [2021-11-07 01:39:28,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22418 to 22334. [2021-11-07 01:39:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22334 states, 22295 states have (on average 1.2706436420722136) internal successors, (28329), 22317 states have internal predecessors, (28329), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 01:39:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22334 states to 22334 states and 28353 transitions. [2021-11-07 01:39:28,207 INFO L78 Accepts]: Start accepts. Automaton has 22334 states and 28353 transitions. Word has length 238 [2021-11-07 01:39:28,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:28,208 INFO L470 AbstractCegarLoop]: Abstraction has 22334 states and 28353 transitions. [2021-11-07 01:39:28,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 01:39:28,208 INFO L276 IsEmpty]: Start isEmpty. Operand 22334 states and 28353 transitions. [2021-11-07 01:39:28,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-07 01:39:28,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:28,218 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:28,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:28,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:28,433 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 01:39:28,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:28,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1053554916, now seen corresponding path program 1 times [2021-11-07 01:39:28,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:28,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211936091] [2021-11-07 01:39:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:28,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:28,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:28,439 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:28,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6095fd07-b253-4ad1-b7fd-103aee0e5b92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 01:39:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:36,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 3158 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 01:39:36,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:39:37,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:38,494 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:39:38,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:38,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211936091] [2021-11-07 01:39:38,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211936091] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:38,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:38,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-07 01:39:38,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14312290] [2021-11-07 01:39:38,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 01:39:38,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:38,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 01:39:38,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:39:38,497 INFO L87 Difference]: Start difference. First operand 22334 states and 28353 transitions. Second operand has 15 states, 15 states have (on average 16.466666666666665) internal successors, (247), 15 states have internal predecessors, (247), 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 01:40:10,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:10,548 INFO L93 Difference]: Finished difference Result 119098 states and 151079 transitions. [2021-11-07 01:40:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:40:10,549 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 16.466666666666665) internal successors, (247), 15 states have internal predecessors, (247), 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 239 [2021-11-07 01:40:10,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:10,901 INFO L225 Difference]: With dead ends: 119098 [2021-11-07 01:40:10,902 INFO L226 Difference]: Without dead ends: 96896 [2021-11-07 01:40:10,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=275, Invalid=717, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:40:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96896 states.