./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/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_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/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 32bit --witnessprinter.graph.data.programhash ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:05:50,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:05:50,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:05:50,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:05:50,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:05:50,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:05:50,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:05:50,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:05:50,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:05:50,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:05:50,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:05:50,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:05:50,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:05:50,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:05:50,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:05:50,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:05:50,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:05:50,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:05:50,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:05:50,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:05:50,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:05:50,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:05:50,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:05:50,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:05:50,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:05:50,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:05:50,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:05:50,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:05:50,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:05:50,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:05:50,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:05:50,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:05:50,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:05:50,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:05:50,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:05:50,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:05:50,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:05:50,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:05:50,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:05:50,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:05:50,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:05:50,571 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:05:50,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:05:50,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:05:50,637 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:05:50,638 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:05:50,638 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:05:50,638 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:05:50,638 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:05:50,639 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:05:50,639 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:05:50,639 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:05:50,647 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:05:50,648 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:05:50,648 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:05:50,649 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:05:50,649 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:05:50,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:05:50,650 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:05:50,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:05:50,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:05:50,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:05:50,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:05:50,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:05:50,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:05:50,659 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:05:50,659 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:05:50,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:05:50,659 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:05:50,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:05:50,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:05:50,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:05:50,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:50,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:05:50,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:05:50,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:05:50,660 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:05:50,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:05:50,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:05:50,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:05:50,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:05:50,661 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_4a256498-0311-41d0-b539-560685d8d285/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 [2021-11-07 01:05:50,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:05:50,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:05:50,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:05:50,975 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:05:50,976 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:05:50,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2021-11-07 01:05:51,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/data/2977da186/840ab582898740af8d0b96a0cc2a8085/FLAGb8b15e7f2 [2021-11-07 01:05:51,850 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:05:51,851 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2021-11-07 01:05:51,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/data/2977da186/840ab582898740af8d0b96a0cc2a8085/FLAGb8b15e7f2 [2021-11-07 01:05:51,987 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/data/2977da186/840ab582898740af8d0b96a0cc2a8085 [2021-11-07 01:05:51,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:05:51,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:05:52,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:52,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:05:52,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:05:52,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:51" (1/1) ... [2021-11-07 01:05:52,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63bdb67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:52, skipping insertion in model container [2021-11-07 01:05:52,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:51" (1/1) ... [2021-11-07 01:05:52,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:05:52,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:05:52,322 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_4a256498-0311-41d0-b539-560685d8d285/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2021-11-07 01:05:52,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:52,734 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 01:05:52,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35066d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:52, skipping insertion in model container [2021-11-07 01:05:52,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:52,735 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:05:52,738 INFO L168 Benchmark]: Toolchain (without parser) took 746.25 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 69.0 MB in the beginning and 94.0 MB in the end (delta: -25.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:05:52,743 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory was 73.8 MB in the beginning and 73.7 MB in the end (delta: 61.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:05:52,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.37 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 68.7 MB in the beginning and 94.0 MB in the end (delta: -25.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:05:52,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory was 73.8 MB in the beginning and 73.7 MB in the end (delta: 61.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 734.37 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 68.7 MB in the beginning and 94.0 MB in the end (delta: -25.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2371]: 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_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/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_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/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 32bit --witnessprinter.graph.data.programhash ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:05:55,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:05:55,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:05:55,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:05:55,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:05:55,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:05:55,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:05:55,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:05:55,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:05:55,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:05:55,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:05:55,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:05:55,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:05:55,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:05:55,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:05:55,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:05:55,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:05:55,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:05:55,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:05:55,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:05:55,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:05:55,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:05:55,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:05:55,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:05:55,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:05:55,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:05:55,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:05:55,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:05:55,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:05:55,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:05:55,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:05:55,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:05:55,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:05:55,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:05:55,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:05:55,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:05:55,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:05:55,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:05:55,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:05:55,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:05:55,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:05:55,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:05:55,189 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:05:55,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:05:55,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:05:55,191 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:05:55,191 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:05:55,192 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:05:55,192 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:05:55,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:05:55,193 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:05:55,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:05:55,194 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:05:55,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:05:55,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:05:55,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:05:55,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:05:55,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:05:55,195 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:05:55,196 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:05:55,196 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:05:55,196 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:05:55,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:05:55,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:05:55,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:05:55,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:05:55,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:05:55,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:05:55,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:55,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:05:55,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:05:55,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:05:55,199 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:05:55,200 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:55,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:05:55,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:05:55,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:05:55,201 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_4a256498-0311-41d0-b539-560685d8d285/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 [2021-11-07 01:05:55,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:05:55,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:05:55,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:05:55,685 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:05:55,686 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:05:55,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2021-11-07 01:05:55,769 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/data/5815f64cc/33aa9f3905a94e69b24a2b163d166aef/FLAG8fd1bce1a [2021-11-07 01:05:56,576 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:05:56,577 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2021-11-07 01:05:56,601 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/data/5815f64cc/33aa9f3905a94e69b24a2b163d166aef/FLAG8fd1bce1a [2021-11-07 01:05:56,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/data/5815f64cc/33aa9f3905a94e69b24a2b163d166aef [2021-11-07 01:05:56,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:05:56,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:05:56,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:56,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:05:56,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:05:56,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:56" (1/1) ... [2021-11-07 01:05:56,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d22367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:56, skipping insertion in model container [2021-11-07 01:05:56,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:56" (1/1) ... [2021-11-07 01:05:56,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:05:56,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:05:57,004 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_4a256498-0311-41d0-b539-560685d8d285/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2021-11-07 01:05:57,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:57,421 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:05:57,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:05:57,440 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_4a256498-0311-41d0-b539-560685d8d285/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2021-11-07 01:05:57,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:57,668 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:05:57,688 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_4a256498-0311-41d0-b539-560685d8d285/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2021-11-07 01:05:57,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:57,898 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:05:57,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:57 WrapperNode [2021-11-07 01:05:57,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:57,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:05:57,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:05:57,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:05:57,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:57" (1/1) ... [2021-11-07 01:05:57,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:57" (1/1) ... [2021-11-07 01:05:58,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:05:58,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:05:58,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:05:58,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:05:58,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:57" (1/1) ... [2021-11-07 01:05:58,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:57" (1/1) ... [2021-11-07 01:05:58,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:57" (1/1) ... [2021-11-07 01:05:58,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:57" (1/1) ... [2021-11-07 01:05:59,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:57" (1/1) ... [2021-11-07 01:05:59,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:57" (1/1) ... [2021-11-07 01:05:59,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:57" (1/1) ... [2021-11-07 01:05:59,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:05:59,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:05:59,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:05:59,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:05:59,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:57" (1/1) ... [2021-11-07 01:05:59,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:59,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:05:59,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:05:59,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:05:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:05:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:05:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:05:59,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:06:22,165 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:06:22,165 INFO L299 CfgBuilder]: Removed 2071 assume(true) statements. [2021-11-07 01:06:22,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:22 BoogieIcfgContainer [2021-11-07 01:06:22,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:06:22,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:06:22,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:06:22,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:06:22,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:05:56" (1/3) ... [2021-11-07 01:06:22,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6bb0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:06:22, skipping insertion in model container [2021-11-07 01:06:22,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:57" (2/3) ... [2021-11-07 01:06:22,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6bb0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:06:22, skipping insertion in model container [2021-11-07 01:06:22,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:22" (3/3) ... [2021-11-07 01:06:22,186 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product23.cil.c [2021-11-07 01:06:22,191 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:06:22,191 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:06:22,285 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:06:22,293 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 01:06:22,293 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:06:22,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 9326 states, 9315 states have (on average 1.8909286097691895) internal successors, (17614), 9325 states have internal predecessors, (17614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:22,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 01:06:22,514 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:22,515 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] [2021-11-07 01:06:22,516 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:22,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:22,522 INFO L85 PathProgramCache]: Analyzing trace with hash -9120908, now seen corresponding path program 1 times [2021-11-07 01:06:22,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:22,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850050690] [2021-11-07 01:06:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:22,538 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:22,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:22,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:22,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:06:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:22,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:06:22,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:23,142 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 01:06:23,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:23,355 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 01:06:23,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:23,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850050690] [2021-11-07 01:06:23,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850050690] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:23,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:23,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:06:23,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104451908] [2021-11-07 01:06:23,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:23,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:23,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:23,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:23,413 INFO L87 Difference]: Start difference. First operand has 9326 states, 9315 states have (on average 1.8909286097691895) internal successors, (17614), 9325 states have internal predecessors, (17614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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 01:06:24,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:24,899 INFO L93 Difference]: Finished difference Result 31643 states and 59764 transitions. [2021-11-07 01:06:24,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:06:24,901 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 58 [2021-11-07 01:06:24,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:25,110 INFO L225 Difference]: With dead ends: 31643 [2021-11-07 01:06:25,110 INFO L226 Difference]: Without dead ends: 22313 [2021-11-07 01:06:25,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 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 01:06:25,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22313 states. [2021-11-07 01:06:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22313 to 9318. [2021-11-07 01:06:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9318 states, 9308 states have (on average 1.876235496347228) internal successors, (17464), 9317 states have internal predecessors, (17464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:25,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9318 states to 9318 states and 17464 transitions. [2021-11-07 01:06:25,881 INFO L78 Accepts]: Start accepts. Automaton has 9318 states and 17464 transitions. Word has length 58 [2021-11-07 01:06:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:25,882 INFO L470 AbstractCegarLoop]: Abstraction has 9318 states and 17464 transitions. [2021-11-07 01:06:25,883 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 01:06:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 9318 states and 17464 transitions. [2021-11-07 01:06:25,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:06:25,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:25,893 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 01:06:25,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:06:26,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:26,111 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:26,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:26,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1911444610, now seen corresponding path program 1 times [2021-11-07 01:06:26,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:26,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009141971] [2021-11-07 01:06:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:26,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:26,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:26,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:26,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:06:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:26,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:06:26,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:26,717 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 01:06:26,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:26,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:26,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:26,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009141971] [2021-11-07 01:06:26,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009141971] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:26,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:26,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:06:26,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487086116] [2021-11-07 01:06:26,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:06:26,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:26,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:06:26,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:06:26,928 INFO L87 Difference]: Start difference. First operand 9318 states and 17464 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:31,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:31,301 INFO L93 Difference]: Finished difference Result 64607 states and 121079 transitions. [2021-11-07 01:06:31,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:06:31,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 01:06:31,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:31,504 INFO L225 Difference]: With dead ends: 64607 [2021-11-07 01:06:31,504 INFO L226 Difference]: Without dead ends: 55308 [2021-11-07 01:06:31,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:06:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55308 states. [2021-11-07 01:06:32,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55308 to 9307. [2021-11-07 01:06:32,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9307 states, 9297 states have (on average 1.8741529525653438) internal successors, (17424), 9306 states have internal predecessors, (17424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:32,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9307 states to 9307 states and 17424 transitions. [2021-11-07 01:06:32,483 INFO L78 Accepts]: Start accepts. Automaton has 9307 states and 17424 transitions. Word has length 60 [2021-11-07 01:06:32,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:32,484 INFO L470 AbstractCegarLoop]: Abstraction has 9307 states and 17424 transitions. [2021-11-07 01:06:32,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 9307 states and 17424 transitions. [2021-11-07 01:06:32,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:06:32,493 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:32,502 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] [2021-11-07 01:06:32,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:32,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:32,727 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:32,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash -482080797, now seen corresponding path program 1 times [2021-11-07 01:06:32,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:32,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086453317] [2021-11-07 01:06:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:32,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:32,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:32,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:32,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:06:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:33,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:06:33,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:33,351 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 01:06:33,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:33,541 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 01:06:33,541 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:33,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086453317] [2021-11-07 01:06:33,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086453317] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:33,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:33,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:06:33,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996380170] [2021-11-07 01:06:33,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:33,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:33,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:33,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:33,544 INFO L87 Difference]: Start difference. First operand 9307 states and 17424 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:34,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:34,806 INFO L93 Difference]: Finished difference Result 31491 states and 58982 transitions. [2021-11-07 01:06:34,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:06:34,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 01:06:34,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:34,877 INFO L225 Difference]: With dead ends: 31491 [2021-11-07 01:06:34,878 INFO L226 Difference]: Without dead ends: 22199 [2021-11-07 01:06:34,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 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 01:06:34,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22199 states. [2021-11-07 01:06:35,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22199 to 9303. [2021-11-07 01:06:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9303 states, 9293 states have (on average 1.873345528892715) internal successors, (17409), 9302 states have internal predecessors, (17409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9303 states to 9303 states and 17409 transitions. [2021-11-07 01:06:35,524 INFO L78 Accepts]: Start accepts. Automaton has 9303 states and 17409 transitions. Word has length 65 [2021-11-07 01:06:35,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:35,525 INFO L470 AbstractCegarLoop]: Abstraction has 9303 states and 17409 transitions. [2021-11-07 01:06:35,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:35,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9303 states and 17409 transitions. [2021-11-07 01:06:35,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:06:35,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:35,530 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] [2021-11-07 01:06:35,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:35,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:35,754 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:35,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1874173051, now seen corresponding path program 1 times [2021-11-07 01:06:35,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:35,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421360302] [2021-11-07 01:06:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:35,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:35,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:35,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:35,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:06:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:36,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:06:36,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:36,445 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 01:06:36,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:36,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:36,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421360302] [2021-11-07 01:06:36,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421360302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:36,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:36,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:06:36,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487856616] [2021-11-07 01:06:36,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:06:36,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:36,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:06:36,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:06:36,639 INFO L87 Difference]: Start difference. First operand 9303 states and 17409 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 01:06:41,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:41,570 INFO L93 Difference]: Finished difference Result 101451 states and 190068 transitions. [2021-11-07 01:06:41,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 01:06:41,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 67 [2021-11-07 01:06:41,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:42,018 INFO L225 Difference]: With dead ends: 101451 [2021-11-07 01:06:42,019 INFO L226 Difference]: Without dead ends: 92168 [2021-11-07 01:06:42,093 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:06:42,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92168 states. [2021-11-07 01:06:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92168 to 9316. [2021-11-07 01:06:43,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9316 states, 9306 states have (on average 1.8715882226520524) internal successors, (17417), 9315 states have internal predecessors, (17417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9316 states to 9316 states and 17417 transitions. [2021-11-07 01:06:43,199 INFO L78 Accepts]: Start accepts. Automaton has 9316 states and 17417 transitions. Word has length 67 [2021-11-07 01:06:43,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:43,201 INFO L470 AbstractCegarLoop]: Abstraction has 9316 states and 17417 transitions. [2021-11-07 01:06:43,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 01:06:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand 9316 states and 17417 transitions. [2021-11-07 01:06:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:06:43,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:43,207 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] [2021-11-07 01:06:43,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:43,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:43,426 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:43,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:43,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1169725652, now seen corresponding path program 1 times [2021-11-07 01:06:43,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:43,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722402637] [2021-11-07 01:06:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:43,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:43,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:43,431 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:43,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:06:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:43,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:06:43,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:44,091 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 01:06:44,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:44,269 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 01:06:44,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:44,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722402637] [2021-11-07 01:06:44,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722402637] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:44,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:44,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:06:44,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833459018] [2021-11-07 01:06:44,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:06:44,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:44,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:06:44,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:06:44,273 INFO L87 Difference]: Start difference. First operand 9316 states and 17417 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:46,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:46,542 INFO L93 Difference]: Finished difference Result 64593 states and 120959 transitions. [2021-11-07 01:06:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:06:46,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:06:46,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:46,663 INFO L225 Difference]: With dead ends: 64593 [2021-11-07 01:06:46,663 INFO L226 Difference]: Without dead ends: 55329 [2021-11-07 01:06:46,699 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:06:46,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55329 states. [2021-11-07 01:06:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55329 to 9328. [2021-11-07 01:06:47,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9328 states, 9318 states have (on average 1.8704657651856622) internal successors, (17429), 9327 states have internal predecessors, (17429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9328 states to 9328 states and 17429 transitions. [2021-11-07 01:06:47,535 INFO L78 Accepts]: Start accepts. Automaton has 9328 states and 17429 transitions. Word has length 71 [2021-11-07 01:06:47,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:47,536 INFO L470 AbstractCegarLoop]: Abstraction has 9328 states and 17429 transitions. [2021-11-07 01:06:47,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:47,536 INFO L276 IsEmpty]: Start isEmpty. Operand 9328 states and 17429 transitions. [2021-11-07 01:06:47,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:06:47,554 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:47,554 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] [2021-11-07 01:06:47,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:47,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:47,769 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:47,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:47,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2031303623, now seen corresponding path program 1 times [2021-11-07 01:06:47,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:47,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871947180] [2021-11-07 01:06:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:47,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:47,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:47,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:47,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:06:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:48,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:06:48,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:48,422 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 01:06:48,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:48,608 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 01:06:48,609 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:48,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871947180] [2021-11-07 01:06:48,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871947180] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:48,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:48,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:06:48,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497903505] [2021-11-07 01:06:48,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:06:48,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:48,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:06:48,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:06:48,612 INFO L87 Difference]: Start difference. First operand 9328 states and 17429 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:49,329 INFO L93 Difference]: Finished difference Result 22290 states and 41698 transitions. [2021-11-07 01:06:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:06:49,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-07 01:06:49,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:49,353 INFO L225 Difference]: With dead ends: 22290 [2021-11-07 01:06:49,353 INFO L226 Difference]: Without dead ends: 12990 [2021-11-07 01:06:49,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 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 01:06:49,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2021-11-07 01:06:49,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 9280. [2021-11-07 01:06:49,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9280 states, 9270 states have (on average 1.871628910463862) internal successors, (17350), 9279 states have internal predecessors, (17350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:49,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9280 states to 9280 states and 17350 transitions. [2021-11-07 01:06:49,793 INFO L78 Accepts]: Start accepts. Automaton has 9280 states and 17350 transitions. Word has length 71 [2021-11-07 01:06:49,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:49,794 INFO L470 AbstractCegarLoop]: Abstraction has 9280 states and 17350 transitions. [2021-11-07 01:06:49,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:49,794 INFO L276 IsEmpty]: Start isEmpty. Operand 9280 states and 17350 transitions. [2021-11-07 01:06:49,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:06:49,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:49,798 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] [2021-11-07 01:06:49,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:50,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:50,007 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:50,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1413827172, now seen corresponding path program 1 times [2021-11-07 01:06:50,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:50,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265649741] [2021-11-07 01:06:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:50,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:50,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:50,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:50,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:06:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:50,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:06:50,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:50,674 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 01:06:50,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:50,854 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 01:06:50,854 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:50,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265649741] [2021-11-07 01:06:50,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265649741] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:50,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:50,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:06:50,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728457205] [2021-11-07 01:06:50,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:50,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:50,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:50,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:50,856 INFO L87 Difference]: Start difference. First operand 9280 states and 17350 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:51,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:51,332 INFO L93 Difference]: Finished difference Result 22237 states and 41604 transitions. [2021-11-07 01:06:51,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:06:51,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 01:06:51,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:51,357 INFO L225 Difference]: With dead ends: 22237 [2021-11-07 01:06:51,357 INFO L226 Difference]: Without dead ends: 12988 [2021-11-07 01:06:51,375 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 140 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 01:06:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12988 states. [2021-11-07 01:06:51,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12988 to 9277. [2021-11-07 01:06:51,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9277 states, 9267 states have (on average 1.8708319844609906) internal successors, (17337), 9276 states have internal predecessors, (17337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:51,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 17337 transitions. [2021-11-07 01:06:51,876 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 17337 transitions. Word has length 72 [2021-11-07 01:06:51,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:51,877 INFO L470 AbstractCegarLoop]: Abstraction has 9277 states and 17337 transitions. [2021-11-07 01:06:51,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 17337 transitions. [2021-11-07 01:06:51,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:06:51,883 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:51,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:51,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:52,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:52,090 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:52,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:52,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1427399418, now seen corresponding path program 1 times [2021-11-07 01:06:52,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:52,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520011342] [2021-11-07 01:06:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:52,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:52,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:52,092 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:52,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:06:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:52,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:06:52,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:52,799 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 01:06:52,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:52,972 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 01:06:52,972 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:52,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520011342] [2021-11-07 01:06:52,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520011342] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:52,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:52,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:06:52,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744489035] [2021-11-07 01:06:52,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:06:52,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:52,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:06:52,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:06:52,975 INFO L87 Difference]: Start difference. First operand 9277 states and 17337 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:55,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:55,132 INFO L93 Difference]: Finished difference Result 51855 states and 97051 transitions. [2021-11-07 01:06:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:06:55,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 01:06:55,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:55,197 INFO L225 Difference]: With dead ends: 51855 [2021-11-07 01:06:55,198 INFO L226 Difference]: Without dead ends: 42613 [2021-11-07 01:06:55,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:06:55,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42613 states. [2021-11-07 01:06:55,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42613 to 9282. [2021-11-07 01:06:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9282 states, 9272 states have (on average 1.8699309749784296) internal successors, (17338), 9281 states have internal predecessors, (17338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:55,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9282 states to 9282 states and 17338 transitions. [2021-11-07 01:06:55,866 INFO L78 Accepts]: Start accepts. Automaton has 9282 states and 17338 transitions. Word has length 73 [2021-11-07 01:06:55,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:55,866 INFO L470 AbstractCegarLoop]: Abstraction has 9282 states and 17338 transitions. [2021-11-07 01:06:55,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:55,867 INFO L276 IsEmpty]: Start isEmpty. Operand 9282 states and 17338 transitions. [2021-11-07 01:06:55,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 01:06:55,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:55,871 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] [2021-11-07 01:06:55,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:56,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:56,086 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:56,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:56,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1375286721, now seen corresponding path program 1 times [2021-11-07 01:06:56,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:56,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049992560] [2021-11-07 01:06:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:56,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:56,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:56,089 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:56,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:06:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:56,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:06:56,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:56,932 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 01:06:56,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:57,201 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 01:06:57,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:57,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049992560] [2021-11-07 01:06:57,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049992560] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:57,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:57,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:06:57,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686916345] [2021-11-07 01:06:57,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:06:57,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:57,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:06:57,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:06:57,203 INFO L87 Difference]: Start difference. First operand 9282 states and 17338 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:05,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:05,373 INFO L93 Difference]: Finished difference Result 32164 states and 60053 transitions. [2021-11-07 01:07:05,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:05,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 01:07:05,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:05,401 INFO L225 Difference]: With dead ends: 32164 [2021-11-07 01:07:05,401 INFO L226 Difference]: Without dead ends: 22925 [2021-11-07 01:07:05,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:07:05,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22925 states. [2021-11-07 01:07:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22925 to 9282. [2021-11-07 01:07:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9282 states, 9272 states have (on average 1.8092105263157894) internal successors, (16775), 9281 states have internal predecessors, (16775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9282 states to 9282 states and 16775 transitions. [2021-11-07 01:07:05,987 INFO L78 Accepts]: Start accepts. Automaton has 9282 states and 16775 transitions. Word has length 74 [2021-11-07 01:07:05,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:05,988 INFO L470 AbstractCegarLoop]: Abstraction has 9282 states and 16775 transitions. [2021-11-07 01:07:05,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:05,988 INFO L276 IsEmpty]: Start isEmpty. Operand 9282 states and 16775 transitions. [2021-11-07 01:07:05,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:07:05,991 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:05,991 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] [2021-11-07 01:07:06,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:06,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:06,199 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:07:06,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:06,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1619201109, now seen corresponding path program 1 times [2021-11-07 01:07:06,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:06,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490970345] [2021-11-07 01:07:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:06,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:06,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:06,201 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:06,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:07:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:06,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:07:06,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:07,147 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 01:07:07,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:07,399 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 01:07:07,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:07,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490970345] [2021-11-07 01:07:07,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490970345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:07,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:07,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:07:07,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979690185] [2021-11-07 01:07:07,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:07:07,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:07,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:07:07,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:07:07,401 INFO L87 Difference]: Start difference. First operand 9282 states and 16775 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:14,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:14,921 INFO L93 Difference]: Finished difference Result 44129 states and 80754 transitions. [2021-11-07 01:07:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:07:14,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 82 [2021-11-07 01:07:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:14,968 INFO L225 Difference]: With dead ends: 44129 [2021-11-07 01:07:14,968 INFO L226 Difference]: Without dead ends: 34917 [2021-11-07 01:07:14,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:07:15,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34917 states. [2021-11-07 01:07:15,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34917 to 12842. [2021-11-07 01:07:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12842 states, 12832 states have (on average 1.810785536159601) internal successors, (23236), 12841 states have internal predecessors, (23236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12842 states to 12842 states and 23236 transitions. [2021-11-07 01:07:15,744 INFO L78 Accepts]: Start accepts. Automaton has 12842 states and 23236 transitions. Word has length 82 [2021-11-07 01:07:15,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:15,745 INFO L470 AbstractCegarLoop]: Abstraction has 12842 states and 23236 transitions. [2021-11-07 01:07:15,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:15,745 INFO L276 IsEmpty]: Start isEmpty. Operand 12842 states and 23236 transitions. [2021-11-07 01:07:15,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:07:15,748 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:15,748 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] [2021-11-07 01:07:15,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:15,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:15,957 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:07:15,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1533697070, now seen corresponding path program 1 times [2021-11-07 01:07:15,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:15,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928256677] [2021-11-07 01:07:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:15,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:15,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:15,959 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:15,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:07:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:16,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:07:16,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:16,990 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 01:07:16,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:18,611 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 01:07:18,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:18,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928256677] [2021-11-07 01:07:18,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928256677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:18,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:18,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:07:18,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34943740] [2021-11-07 01:07:18,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:07:18,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:18,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:07:18,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:07:18,613 INFO L87 Difference]: Start difference. First operand 12842 states and 23236 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:25,058 INFO L93 Difference]: Finished difference Result 48309 states and 87564 transitions. [2021-11-07 01:07:25,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:25,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 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 85 [2021-11-07 01:07:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:25,113 INFO L225 Difference]: With dead ends: 48309 [2021-11-07 01:07:25,114 INFO L226 Difference]: Without dead ends: 35529 [2021-11-07 01:07:25,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:07:25,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35529 states. [2021-11-07 01:07:26,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35529 to 21223. [2021-11-07 01:07:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21223 states, 21213 states have (on average 1.7996040164050346) internal successors, (38175), 21222 states have internal predecessors, (38175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:26,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21223 states to 21223 states and 38175 transitions. [2021-11-07 01:07:26,601 INFO L78 Accepts]: Start accepts. Automaton has 21223 states and 38175 transitions. Word has length 85 [2021-11-07 01:07:26,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:26,601 INFO L470 AbstractCegarLoop]: Abstraction has 21223 states and 38175 transitions. [2021-11-07 01:07:26,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:26,602 INFO L276 IsEmpty]: Start isEmpty. Operand 21223 states and 38175 transitions. [2021-11-07 01:07:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 01:07:26,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:26,606 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] [2021-11-07 01:07:26,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 01:07:26,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:26,823 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:07:26,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:26,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2127619703, now seen corresponding path program 1 times [2021-11-07 01:07:26,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:26,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237535945] [2021-11-07 01:07:26,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:26,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:26,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:26,826 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:26,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:07:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:27,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:07:27,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:27,765 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 01:07:27,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:28,033 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 01:07:28,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:28,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237535945] [2021-11-07 01:07:28,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237535945] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:28,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:28,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:07:28,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605056490] [2021-11-07 01:07:28,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:07:28,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:28,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:07:28,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:28,036 INFO L87 Difference]: Start difference. First operand 21223 states and 38175 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:40,762 INFO L93 Difference]: Finished difference Result 105590 states and 190956 transitions. [2021-11-07 01:07:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:07:40,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 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 01:07:40,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:40,903 INFO L225 Difference]: With dead ends: 105590 [2021-11-07 01:07:40,903 INFO L226 Difference]: Without dead ends: 84428 [2021-11-07 01:07:40,934 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:07:41,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84428 states. [2021-11-07 01:07:43,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84428 to 27531. [2021-11-07 01:07:43,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27531 states, 27521 states have (on average 1.798372152174703) internal successors, (49493), 27530 states have internal predecessors, (49493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:43,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27531 states to 27531 states and 49493 transitions. [2021-11-07 01:07:43,360 INFO L78 Accepts]: Start accepts. Automaton has 27531 states and 49493 transitions. Word has length 86 [2021-11-07 01:07:43,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:43,360 INFO L470 AbstractCegarLoop]: Abstraction has 27531 states and 49493 transitions. [2021-11-07 01:07:43,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:43,361 INFO L276 IsEmpty]: Start isEmpty. Operand 27531 states and 49493 transitions. [2021-11-07 01:07:43,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 01:07:43,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:43,365 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] [2021-11-07 01:07:43,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:43,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:43,579 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:07:43,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:43,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2143419440, now seen corresponding path program 1 times [2021-11-07 01:07:43,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:43,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977831159] [2021-11-07 01:07:43,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:43,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:43,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:43,581 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:43,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a256498-0311-41d0-b539-560685d8d285/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:07:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:44,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:07:44,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:44,492 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 01:07:44,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:44,729 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 01:07:44,729 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:44,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977831159] [2021-11-07 01:07:44,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977831159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:44,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:44,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:07:44,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186994286] [2021-11-07 01:07:44,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:44,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:44,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:44,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:44,731 INFO L87 Difference]: Start difference. First operand 27531 states and 49493 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 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)