./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.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_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/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_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/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_2365cddb-0099-487b-b217-fa49b5db8094/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 bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:27:21,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:27:21,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:27:21,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:27:21,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:27:21,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:27:21,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:27:21,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:27:21,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:27:21,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:27:21,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:27:21,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:27:21,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:27:21,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:27:21,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:27:21,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:27:21,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:27:21,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:27:21,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:27:21,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:27:21,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:27:21,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:27:21,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:27:21,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:27:21,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:27:21,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:27:21,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:27:21,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:27:21,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:27:21,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:27:21,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:27:21,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:27:21,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:27:21,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:27:21,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:27:21,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:27:21,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:27:21,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:27:21,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:27:21,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:27:21,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:27:21,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:27:21,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:27:21,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:27:21,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:27:21,494 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:27:21,495 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:27:21,495 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:27:21,495 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:27:21,496 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:27:21,496 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:27:21,496 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:27:21,497 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:27:21,497 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:27:21,498 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:27:21,498 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:27:21,498 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:27:21,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:27:21,499 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:27:21,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:27:21,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:27:21,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:27:21,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:27:21,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:27:21,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:27:21,501 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:27:21,501 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:27:21,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:27:21,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:27:21,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:27:21,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:27:21,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:27:21,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:21,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:27:21,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:27:21,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:27:21,503 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:27:21,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:27:21,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:27:21,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:27:21,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:27:21,504 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_2365cddb-0099-487b-b217-fa49b5db8094/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 [2021-11-07 01:27:21,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:27:21,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:27:21,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:27:21,825 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:27:21,826 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:27:21,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-07 01:27:21,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/data/8516a5cb4/1f01335138824e4b92734fdf200f1388/FLAG0139411c1 [2021-11-07 01:27:22,615 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:27:22,615 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-07 01:27:22,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/data/8516a5cb4/1f01335138824e4b92734fdf200f1388/FLAG0139411c1 [2021-11-07 01:27:22,802 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/data/8516a5cb4/1f01335138824e4b92734fdf200f1388 [2021-11-07 01:27:22,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:27:22,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:27:22,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:22,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:27:22,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:27:22,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:22" (1/1) ... [2021-11-07 01:27:22,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f996692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:22, skipping insertion in model container [2021-11-07 01:27:22,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:22" (1/1) ... [2021-11-07 01:27:22,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:27:22,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:27:23,168 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_2365cddb-0099-487b-b217-fa49b5db8094/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-07 01:27:23,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:23,501 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 01:27:23,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3daaffd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:23, skipping insertion in model container [2021-11-07 01:27:23,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:23,503 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:27:23,505 INFO L168 Benchmark]: Toolchain (without parser) took 695.19 ms. Allocated memory is still 104.9 MB. Free memory was 64.3 MB in the beginning and 64.5 MB in the end (delta: -275.9 kB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:27:23,505 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory was 83.4 MB in the beginning and 83.3 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:27:23,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.28 ms. Allocated memory is still 104.9 MB. Free memory was 64.0 MB in the beginning and 64.5 MB in the end (delta: -513.9 kB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:27:23,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory was 83.4 MB in the beginning and 83.3 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 691.28 ms. Allocated memory is still 104.9 MB. Free memory was 64.0 MB in the beginning and 64.5 MB in the end (delta: -513.9 kB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1419]: 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_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/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_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/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_2365cddb-0099-487b-b217-fa49b5db8094/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 bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:27:25,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:27:25,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:27:25,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:27:25,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:27:25,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:27:25,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:27:25,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:27:25,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:27:25,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:27:25,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:27:25,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:27:25,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:27:25,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:27:25,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:27:25,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:27:25,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:27:25,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:27:25,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:27:25,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:27:25,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:27:25,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:27:25,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:27:25,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:27:25,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:27:25,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:27:25,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:27:25,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:27:25,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:27:25,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:27:25,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:27:25,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:27:25,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:27:25,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:27:25,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:27:25,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:27:25,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:27:25,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:27:25,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:27:25,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:27:25,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:27:25,851 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:27:25,892 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:27:25,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:27:25,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:27:25,898 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:27:25,899 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:27:25,899 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:27:25,900 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:27:25,900 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:27:25,900 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:27:25,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:27:25,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:27:25,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:27:25,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:27:25,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:27:25,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:27:25,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:27:25,904 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:27:25,904 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:27:25,904 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:27:25,904 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:27:25,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:27:25,905 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:27:25,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:27:25,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:27:25,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:27:25,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:27:25,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:25,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:27:25,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:27:25,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:27:25,908 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:27:25,908 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:25,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:27:25,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:27:25,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:27:25,909 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_2365cddb-0099-487b-b217-fa49b5db8094/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 [2021-11-07 01:27:26,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:27:26,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:27:26,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:27:26,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:27:26,373 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:27:26,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-07 01:27:26,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/data/d3c03f7cd/dc4cafb25bc446cca6507a4903771ff6/FLAG0c12405d2 [2021-11-07 01:27:27,184 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:27:27,184 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-07 01:27:27,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/data/d3c03f7cd/dc4cafb25bc446cca6507a4903771ff6/FLAG0c12405d2 [2021-11-07 01:27:27,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/data/d3c03f7cd/dc4cafb25bc446cca6507a4903771ff6 [2021-11-07 01:27:27,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:27:27,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:27:27,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:27,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:27:27,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:27:27,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:27" (1/1) ... [2021-11-07 01:27:27,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760806b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:27, skipping insertion in model container [2021-11-07 01:27:27,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:27" (1/1) ... [2021-11-07 01:27:27,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:27:27,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:27:27,593 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_2365cddb-0099-487b-b217-fa49b5db8094/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-07 01:27:28,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:28,073 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:27:28,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:27:28,097 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_2365cddb-0099-487b-b217-fa49b5db8094/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-07 01:27:28,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:28,195 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:27:28,207 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_2365cddb-0099-487b-b217-fa49b5db8094/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-07 01:27:28,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:28,333 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:27:28,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:28 WrapperNode [2021-11-07 01:27:28,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:28,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:27:28,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:27:28,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:27:28,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:28" (1/1) ... [2021-11-07 01:27:28,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:28" (1/1) ... [2021-11-07 01:27:28,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:27:28,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:27:28,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:27:28,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:27:28,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:28" (1/1) ... [2021-11-07 01:27:28,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:28" (1/1) ... [2021-11-07 01:27:28,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:28" (1/1) ... [2021-11-07 01:27:28,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:28" (1/1) ... [2021-11-07 01:27:28,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:28" (1/1) ... [2021-11-07 01:27:28,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:28" (1/1) ... [2021-11-07 01:27:29,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:28" (1/1) ... [2021-11-07 01:27:29,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:27:29,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:27:29,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:27:29,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:27:29,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:28" (1/1) ... [2021-11-07 01:27:29,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:29,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:27:29,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:27:29,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:27:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:27:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:27:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:27:29,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:27:40,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:27:40,312 INFO L299 CfgBuilder]: Removed 809 assume(true) statements. [2021-11-07 01:27:40,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:27:40 BoogieIcfgContainer [2021-11-07 01:27:40,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:27:40,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:27:40,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:27:40,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:27:40,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:27:27" (1/3) ... [2021-11-07 01:27:40,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e994e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:27:40, skipping insertion in model container [2021-11-07 01:27:40,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:28" (2/3) ... [2021-11-07 01:27:40,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e994e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:27:40, skipping insertion in model container [2021-11-07 01:27:40,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:27:40" (3/3) ... [2021-11-07 01:27:40,331 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product29.cil.c [2021-11-07 01:27:40,336 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:27:40,336 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:27:40,408 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:27:40,414 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 01:27:40,414 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:27:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 3566 states, 3560 states have (on average 1.8935393258426967) internal successors, (6741), 3565 states have internal predecessors, (6741), 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 01:27:40,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 01:27:40,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:40,527 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] [2021-11-07 01:27:40,527 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:40,533 INFO L85 PathProgramCache]: Analyzing trace with hash -146225728, now seen corresponding path program 1 times [2021-11-07 01:27:40,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:40,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295725591] [2021-11-07 01:27:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:40,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:40,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:40,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:40,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:27:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:41,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:27:41,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:41,231 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 01:27:41,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:41,311 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 01:27:41,312 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:41,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295725591] [2021-11-07 01:27:41,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295725591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:41,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:41,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:27:41,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720388120] [2021-11-07 01:27:41,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:27:41,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:41,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:27:41,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:27:41,342 INFO L87 Difference]: Start difference. First operand has 3566 states, 3560 states have (on average 1.8935393258426967) internal successors, (6741), 3565 states have internal predecessors, (6741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 01:27:41,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:41,478 INFO L93 Difference]: Finished difference Result 3585 states and 6764 transitions. [2021-11-07 01:27:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:27:41,480 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 42 [2021-11-07 01:27:41,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:41,529 INFO L225 Difference]: With dead ends: 3585 [2021-11-07 01:27:41,530 INFO L226 Difference]: Without dead ends: 3562 [2021-11-07 01:27:41,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:27:41,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2021-11-07 01:27:41,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3562. [2021-11-07 01:27:41,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3557 states have (on average 1.8917627213944335) internal successors, (6729), 3561 states have internal predecessors, (6729), 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 01:27:41,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 6729 transitions. [2021-11-07 01:27:41,736 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 6729 transitions. Word has length 42 [2021-11-07 01:27:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:41,737 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 6729 transitions. [2021-11-07 01:27:41,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 01:27:41,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 6729 transitions. [2021-11-07 01:27:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:27:41,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:41,746 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] [2021-11-07 01:27:41,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:41,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:41,968 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:41,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:41,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1672867975, now seen corresponding path program 1 times [2021-11-07 01:27:41,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:41,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640528673] [2021-11-07 01:27:41,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:41,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:41,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:41,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:41,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:27:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:42,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:27:42,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:42,517 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 01:27:42,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:42,636 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 01:27:42,636 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:42,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640528673] [2021-11-07 01:27:42,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640528673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:42,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:42,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:27:42,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929515093] [2021-11-07 01:27:42,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:42,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:42,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:42,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:27:42,640 INFO L87 Difference]: Start difference. First operand 3562 states and 6729 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:42,923 INFO L93 Difference]: Finished difference Result 7111 states and 13439 transitions. [2021-11-07 01:27:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:27:42,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:27:42,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:42,948 INFO L225 Difference]: With dead ends: 7111 [2021-11-07 01:27:42,949 INFO L226 Difference]: Without dead ends: 3562 [2021-11-07 01:27:42,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 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 01:27:42,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2021-11-07 01:27:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3562. [2021-11-07 01:27:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3557 states have (on average 1.8900759066629182) internal successors, (6723), 3561 states have internal predecessors, (6723), 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 01:27:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 6723 transitions. [2021-11-07 01:27:43,098 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 6723 transitions. Word has length 44 [2021-11-07 01:27:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:43,099 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 6723 transitions. [2021-11-07 01:27:43,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 6723 transitions. [2021-11-07 01:27:43,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:27:43,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:43,104 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] [2021-11-07 01:27:43,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:27:43,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:43,319 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:43,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:43,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1616398097, now seen corresponding path program 1 times [2021-11-07 01:27:43,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:43,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011319024] [2021-11-07 01:27:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:43,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:43,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:43,323 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:43,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:27:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:43,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:27:43,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:43,913 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 01:27:43,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:44,062 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:44,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011319024] [2021-11-07 01:27:44,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011319024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:44,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:44,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:27:44,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738894224] [2021-11-07 01:27:44,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:27:44,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:44,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:27:44,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:27:44,066 INFO L87 Difference]: Start difference. First operand 3562 states and 6723 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:44,394 INFO L93 Difference]: Finished difference Result 7075 states and 13362 transitions. [2021-11-07 01:27:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:27:44,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:27:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:44,418 INFO L225 Difference]: With dead ends: 7075 [2021-11-07 01:27:44,418 INFO L226 Difference]: Without dead ends: 3535 [2021-11-07 01:27:44,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:27:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2021-11-07 01:27:44,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2021-11-07 01:27:44,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3530 states have (on average 1.8886685552407931) internal successors, (6667), 3534 states have internal predecessors, (6667), 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 01:27:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6667 transitions. [2021-11-07 01:27:44,567 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6667 transitions. Word has length 49 [2021-11-07 01:27:44,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:44,567 INFO L470 AbstractCegarLoop]: Abstraction has 3535 states and 6667 transitions. [2021-11-07 01:27:44,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:44,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6667 transitions. [2021-11-07 01:27:44,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:27:44,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:44,571 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] [2021-11-07 01:27:44,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:44,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:44,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:44,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:44,799 INFO L85 PathProgramCache]: Analyzing trace with hash 176969011, now seen corresponding path program 1 times [2021-11-07 01:27:44,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:44,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977897778] [2021-11-07 01:27:44,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:44,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:44,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:44,806 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:44,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:27:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:45,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:27:45,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:45,400 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 01:27:45,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:45,535 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 01:27:45,535 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:45,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977897778] [2021-11-07 01:27:45,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977897778] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:45,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:45,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:27:45,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94288160] [2021-11-07 01:27:45,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:45,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:45,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:45,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:27:45,540 INFO L87 Difference]: Start difference. First operand 3535 states and 6667 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 01:27:45,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:45,751 INFO L93 Difference]: Finished difference Result 7048 states and 13306 transitions. [2021-11-07 01:27:45,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:27:45,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 50 [2021-11-07 01:27:45,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:45,775 INFO L225 Difference]: With dead ends: 7048 [2021-11-07 01:27:45,776 INFO L226 Difference]: Without dead ends: 3535 [2021-11-07 01:27:45,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 96 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 01:27:45,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2021-11-07 01:27:45,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2021-11-07 01:27:45,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3530 states have (on average 1.886968838526912) internal successors, (6661), 3534 states have internal predecessors, (6661), 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 01:27:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6661 transitions. [2021-11-07 01:27:45,986 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6661 transitions. Word has length 50 [2021-11-07 01:27:45,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:45,988 INFO L470 AbstractCegarLoop]: Abstraction has 3535 states and 6661 transitions. [2021-11-07 01:27:45,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 01:27:45,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6661 transitions. [2021-11-07 01:27:45,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:27:45,992 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:45,992 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] [2021-11-07 01:27:46,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:46,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:46,211 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:46,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:46,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2108092548, now seen corresponding path program 1 times [2021-11-07 01:27:46,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:46,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288348320] [2021-11-07 01:27:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:46,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:46,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:46,218 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:46,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:27:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:46,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:27:46,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:46,848 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 01:27:46,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:47,025 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 01:27:47,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:47,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288348320] [2021-11-07 01:27:47,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288348320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:47,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:47,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:27:47,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615405601] [2021-11-07 01:27:47,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:27:47,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:47,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:27:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:27:47,027 INFO L87 Difference]: Start difference. First operand 3535 states and 6661 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 01:27:47,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:47,351 INFO L93 Difference]: Finished difference Result 7042 states and 13289 transitions. [2021-11-07 01:27:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:27:47,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 55 [2021-11-07 01:27:47,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:47,375 INFO L225 Difference]: With dead ends: 7042 [2021-11-07 01:27:47,375 INFO L226 Difference]: Without dead ends: 3532 [2021-11-07 01:27:47,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:27:47,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2021-11-07 01:27:47,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 3532. [2021-11-07 01:27:47,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 3527 states have (on average 1.8863056421888291) internal successors, (6653), 3531 states have internal predecessors, (6653), 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 01:27:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 6653 transitions. [2021-11-07 01:27:47,549 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 6653 transitions. Word has length 55 [2021-11-07 01:27:47,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:47,550 INFO L470 AbstractCegarLoop]: Abstraction has 3532 states and 6653 transitions. [2021-11-07 01:27:47,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 01:27:47,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 6653 transitions. [2021-11-07 01:27:47,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:27:47,554 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:47,555 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] [2021-11-07 01:27:47,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:47,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:47,774 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:47,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:47,775 INFO L85 PathProgramCache]: Analyzing trace with hash -461174188, now seen corresponding path program 1 times [2021-11-07 01:27:47,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:47,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179839776] [2021-11-07 01:27:47,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:47,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:47,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:47,778 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:47,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:27:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:48,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:27:48,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:48,575 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 01:27:48,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:49,539 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 01:27:49,540 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:49,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179839776] [2021-11-07 01:27:49,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179839776] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:49,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:49,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:27:49,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953629314] [2021-11-07 01:27:49,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:27:49,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:49,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:27:49,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:27:49,542 INFO L87 Difference]: Start difference. First operand 3532 states and 6653 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:54,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:54,707 INFO L93 Difference]: Finished difference Result 11275 states and 21302 transitions. [2021-11-07 01:27:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:27:54,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 01:27:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:54,770 INFO L225 Difference]: With dead ends: 11275 [2021-11-07 01:27:54,770 INFO L226 Difference]: Without dead ends: 7785 [2021-11-07 01:27:54,778 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 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 01:27:54,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2021-11-07 01:27:55,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 5020. [2021-11-07 01:27:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5020 states, 5015 states have (on average 1.8885343968095714) internal successors, (9471), 5019 states have internal predecessors, (9471), 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 01:27:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5020 states to 5020 states and 9471 transitions. [2021-11-07 01:27:55,079 INFO L78 Accepts]: Start accepts. Automaton has 5020 states and 9471 transitions. Word has length 56 [2021-11-07 01:27:55,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:55,080 INFO L470 AbstractCegarLoop]: Abstraction has 5020 states and 9471 transitions. [2021-11-07 01:27:55,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5020 states and 9471 transitions. [2021-11-07 01:27:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:27:55,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:55,084 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] [2021-11-07 01:27:55,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:55,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:55,298 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:55,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:55,299 INFO L85 PathProgramCache]: Analyzing trace with hash -533356624, now seen corresponding path program 1 times [2021-11-07 01:27:55,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:55,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263160066] [2021-11-07 01:27:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:55,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:55,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:55,306 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:55,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:27:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:55,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:27:55,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:55,947 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 01:27:55,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:56,142 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 01:27:56,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:56,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263160066] [2021-11-07 01:27:56,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263160066] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:56,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:56,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:27:56,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494236264] [2021-11-07 01:27:56,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:27:56,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:56,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:27:56,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:27:56,144 INFO L87 Difference]: Start difference. First operand 5020 states and 9471 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 01:28:00,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:00,596 INFO L93 Difference]: Finished difference Result 21408 states and 40250 transitions. [2021-11-07 01:28:00,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:28:00,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2021-11-07 01:28:00,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:00,643 INFO L225 Difference]: With dead ends: 21408 [2021-11-07 01:28:00,644 INFO L226 Difference]: Without dead ends: 16429 [2021-11-07 01:28:00,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:28:00,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16429 states. [2021-11-07 01:28:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16429 to 5026. [2021-11-07 01:28:01,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 5021 states have (on average 1.887472615016929) internal successors, (9477), 5025 states have internal predecessors, (9477), 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 01:28:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 9477 transitions. [2021-11-07 01:28:01,093 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 9477 transitions. Word has length 57 [2021-11-07 01:28:01,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:01,093 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 9477 transitions. [2021-11-07 01:28:01,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 01:28:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 9477 transitions. [2021-11-07 01:28:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 01:28:01,097 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:01,098 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 01:28:01,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:01,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:01,313 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:01,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:01,314 INFO L85 PathProgramCache]: Analyzing trace with hash -653204394, now seen corresponding path program 1 times [2021-11-07 01:28:01,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:01,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510013574] [2021-11-07 01:28:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:01,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:01,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:01,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:01,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:28:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:01,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:28:01,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:01,917 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 01:28:01,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:02,096 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:02,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510013574] [2021-11-07 01:28:02,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510013574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:02,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:02,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:28:02,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017634378] [2021-11-07 01:28:02,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:28:02,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:02,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:28:02,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:28:02,098 INFO L87 Difference]: Start difference. First operand 5026 states and 9477 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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 01:28:12,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:12,193 INFO L93 Difference]: Finished difference Result 17286 states and 32564 transitions. [2021-11-07 01:28:12,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:28:12,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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 01:28:12,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:12,238 INFO L225 Difference]: With dead ends: 17286 [2021-11-07 01:28:12,238 INFO L226 Difference]: Without dead ends: 13884 [2021-11-07 01:28:12,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:28:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13884 states. [2021-11-07 01:28:12,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13884 to 8696. [2021-11-07 01:28:12,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8696 states, 8691 states have (on average 1.8842480727189046) internal successors, (16376), 8695 states have internal predecessors, (16376), 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 01:28:12,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8696 states to 8696 states and 16376 transitions. [2021-11-07 01:28:12,841 INFO L78 Accepts]: Start accepts. Automaton has 8696 states and 16376 transitions. Word has length 58 [2021-11-07 01:28:12,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:12,841 INFO L470 AbstractCegarLoop]: Abstraction has 8696 states and 16376 transitions. [2021-11-07 01:28:12,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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 01:28:12,842 INFO L276 IsEmpty]: Start isEmpty. Operand 8696 states and 16376 transitions. [2021-11-07 01:28:12,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:28:12,849 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:12,850 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:12,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:13,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:13,066 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:13,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:13,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1221398247, now seen corresponding path program 1 times [2021-11-07 01:28:13,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:13,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466370367] [2021-11-07 01:28:13,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:13,067 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:13,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:13,068 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:13,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:28:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:13,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:28:13,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:13,764 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 01:28:13,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:13,957 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 01:28:13,957 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:13,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466370367] [2021-11-07 01:28:13,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466370367] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:13,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:13,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:28:13,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045823664] [2021-11-07 01:28:13,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:28:13,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:13,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:28:13,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:28:13,959 INFO L87 Difference]: Start difference. First operand 8696 states and 16376 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:17,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:17,261 INFO L93 Difference]: Finished difference Result 20786 states and 38938 transitions. [2021-11-07 01:28:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:28:17,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 01:28:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:17,319 INFO L225 Difference]: With dead ends: 20786 [2021-11-07 01:28:17,319 INFO L226 Difference]: Without dead ends: 13688 [2021-11-07 01:28:17,330 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:28:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13688 states. [2021-11-07 01:28:17,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13688 to 8673. [2021-11-07 01:28:17,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8673 states, 8668 states have (on average 1.852445777572681) internal successors, (16057), 8672 states have internal predecessors, (16057), 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 01:28:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8673 states to 8673 states and 16057 transitions. [2021-11-07 01:28:17,890 INFO L78 Accepts]: Start accepts. Automaton has 8673 states and 16057 transitions. Word has length 59 [2021-11-07 01:28:17,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:17,891 INFO L470 AbstractCegarLoop]: Abstraction has 8673 states and 16057 transitions. [2021-11-07 01:28:17,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:17,891 INFO L276 IsEmpty]: Start isEmpty. Operand 8673 states and 16057 transitions. [2021-11-07 01:28:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:28:17,894 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:17,894 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 01:28:17,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:18,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:18,109 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:18,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1553234110, now seen corresponding path program 1 times [2021-11-07 01:28:18,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:18,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428153135] [2021-11-07 01:28:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:18,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:18,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:18,111 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:18,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:28:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:18,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:28:18,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:18,831 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 01:28:18,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:19,015 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 01:28:19,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:19,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428153135] [2021-11-07 01:28:19,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428153135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:19,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:19,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:28:19,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551304501] [2021-11-07 01:28:19,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:28:19,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:28:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:28:19,017 INFO L87 Difference]: Start difference. First operand 8673 states and 16057 transitions. Second operand has 5 states, 5 states have (on average 12.0) 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 01:28:21,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:21,094 INFO L93 Difference]: Finished difference Result 58848 states and 109377 transitions. [2021-11-07 01:28:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:28:21,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) 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 60 [2021-11-07 01:28:21,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:21,217 INFO L225 Difference]: With dead ends: 58848 [2021-11-07 01:28:21,217 INFO L226 Difference]: Without dead ends: 50212 [2021-11-07 01:28:21,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 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 01:28:21,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50212 states. [2021-11-07 01:28:22,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50212 to 13574. [2021-11-07 01:28:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13574 states, 13569 states have (on average 1.854300243201415) internal successors, (25161), 13573 states have internal predecessors, (25161), 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 01:28:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13574 states to 13574 states and 25161 transitions. [2021-11-07 01:28:22,427 INFO L78 Accepts]: Start accepts. Automaton has 13574 states and 25161 transitions. Word has length 60 [2021-11-07 01:28:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:22,428 INFO L470 AbstractCegarLoop]: Abstraction has 13574 states and 25161 transitions. [2021-11-07 01:28:22,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) 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 01:28:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 13574 states and 25161 transitions. [2021-11-07 01:28:22,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 01:28:22,430 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:22,431 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] [2021-11-07 01:28:22,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:22,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:22,652 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:22,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:22,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1114412719, now seen corresponding path program 1 times [2021-11-07 01:28:22,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:22,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106748725] [2021-11-07 01:28:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:22,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:22,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:22,654 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:22,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:28:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:23,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:28:23,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:23,368 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 01:28:23,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:23,579 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 01:28:23,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:23,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106748725] [2021-11-07 01:28:23,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106748725] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:23,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:23,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:28:23,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252520458] [2021-11-07 01:28:23,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:28:23,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:28:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:28:23,582 INFO L87 Difference]: Start difference. First operand 13574 states and 25161 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:24,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:24,622 INFO L93 Difference]: Finished difference Result 34971 states and 64870 transitions. [2021-11-07 01:28:24,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:28:24,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 01:28:24,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:24,665 INFO L225 Difference]: With dead ends: 34971 [2021-11-07 01:28:24,665 INFO L226 Difference]: Without dead ends: 23280 [2021-11-07 01:28:24,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 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 01:28:24,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23280 states. [2021-11-07 01:28:25,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23280 to 23265. [2021-11-07 01:28:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23265 states, 23260 states have (on average 1.855116079105761) internal successors, (43150), 23264 states have internal predecessors, (43150), 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 01:28:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23265 states to 23265 states and 43150 transitions. [2021-11-07 01:28:25,785 INFO L78 Accepts]: Start accepts. Automaton has 23265 states and 43150 transitions. Word has length 61 [2021-11-07 01:28:25,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:25,785 INFO L470 AbstractCegarLoop]: Abstraction has 23265 states and 43150 transitions. [2021-11-07 01:28:25,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 23265 states and 43150 transitions. [2021-11-07 01:28:25,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:28:25,788 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:25,789 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] [2021-11-07 01:28:25,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:25,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:26,001 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:26,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:26,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1704268535, now seen corresponding path program 1 times [2021-11-07 01:28:26,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:26,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624575397] [2021-11-07 01:28:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:26,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:26,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:26,004 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:26,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:28:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:26,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:28:26,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:26,773 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 01:28:26,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:26,969 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 01:28:26,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:26,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624575397] [2021-11-07 01:28:26,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624575397] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:26,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:26,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:28:26,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660605901] [2021-11-07 01:28:26,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:28:26,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:26,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:28:26,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:28:26,971 INFO L87 Difference]: Start difference. First operand 23265 states and 43150 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:28,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:28,660 INFO L93 Difference]: Finished difference Result 62731 states and 116369 transitions. [2021-11-07 01:28:28,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:28:28,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-07 01:28:28,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:28,724 INFO L225 Difference]: With dead ends: 62731 [2021-11-07 01:28:28,724 INFO L226 Difference]: Without dead ends: 42466 [2021-11-07 01:28:28,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 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 01:28:28,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42466 states. [2021-11-07 01:28:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42466 to 42451. [2021-11-07 01:28:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42451 states, 42446 states have (on average 1.8551571408377703) internal successors, (78744), 42450 states have internal predecessors, (78744), 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 01:28:30,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42451 states to 42451 states and 78744 transitions. [2021-11-07 01:28:30,883 INFO L78 Accepts]: Start accepts. Automaton has 42451 states and 78744 transitions. Word has length 62 [2021-11-07 01:28:30,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:30,884 INFO L470 AbstractCegarLoop]: Abstraction has 42451 states and 78744 transitions. [2021-11-07 01:28:30,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:30,884 INFO L276 IsEmpty]: Start isEmpty. Operand 42451 states and 78744 transitions. [2021-11-07 01:28:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:30,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:30,887 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] [2021-11-07 01:28:30,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 01:28:31,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:31,102 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:31,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:31,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1209582794, now seen corresponding path program 1 times [2021-11-07 01:28:31,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:31,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458169835] [2021-11-07 01:28:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:31,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:31,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:31,104 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:31,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:28:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:31,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:28:31,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:31,868 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 01:28:31,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:32,056 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 01:28:32,057 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:32,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458169835] [2021-11-07 01:28:32,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458169835] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:32,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:32,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:28:32,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436585212] [2021-11-07 01:28:32,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:28:32,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:32,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:28:32,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:28:32,059 INFO L87 Difference]: Start difference. First operand 42451 states and 78744 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 01:28:35,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:35,224 INFO L93 Difference]: Finished difference Result 117859 states and 218550 transitions. [2021-11-07 01:28:35,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:28:35,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 63 [2021-11-07 01:28:35,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:35,359 INFO L225 Difference]: With dead ends: 117859 [2021-11-07 01:28:35,359 INFO L226 Difference]: Without dead ends: 80416 [2021-11-07 01:28:35,494 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 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 01:28:35,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80416 states. [2021-11-07 01:28:38,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80416 to 80401. [2021-11-07 01:28:39,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80401 states, 80396 states have (on average 1.8541469724861934) internal successors, (149066), 80400 states have internal predecessors, (149066), 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 01:28:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80401 states to 80401 states and 149066 transitions. [2021-11-07 01:28:39,344 INFO L78 Accepts]: Start accepts. Automaton has 80401 states and 149066 transitions. Word has length 63 [2021-11-07 01:28:39,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:39,344 INFO L470 AbstractCegarLoop]: Abstraction has 80401 states and 149066 transitions. [2021-11-07 01:28:39,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 01:28:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 80401 states and 149066 transitions. [2021-11-07 01:28:39,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:28:39,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:39,346 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] [2021-11-07 01:28:39,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:39,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:39,547 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:39,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:39,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1453847154, now seen corresponding path program 1 times [2021-11-07 01:28:39,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:39,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299663159] [2021-11-07 01:28:39,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:39,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:39,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:39,549 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:39,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:28:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:40,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:28:40,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:40,337 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 01:28:40,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:40,534 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 01:28:40,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:40,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299663159] [2021-11-07 01:28:40,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299663159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:40,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:40,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:28:40,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878220484] [2021-11-07 01:28:40,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:28:40,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:40,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:28:40,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:28:40,536 INFO L87 Difference]: Start difference. First operand 80401 states and 149066 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:46,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:46,493 INFO L93 Difference]: Finished difference Result 227271 states and 421083 transitions. [2021-11-07 01:28:46,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:28:46,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 01:28:46,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:46,743 INFO L225 Difference]: With dead ends: 227271 [2021-11-07 01:28:46,743 INFO L226 Difference]: Without dead ends: 155442 [2021-11-07 01:28:46,795 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 01:28:46,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155442 states. [2021-11-07 01:28:53,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155442 to 155427. [2021-11-07 01:28:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155427 states, 155422 states have (on average 1.852247429578824) internal successors, (287880), 155426 states have internal predecessors, (287880), 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 01:28:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155427 states to 155427 states and 287880 transitions. [2021-11-07 01:28:53,793 INFO L78 Accepts]: Start accepts. Automaton has 155427 states and 287880 transitions. Word has length 64 [2021-11-07 01:28:53,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:53,793 INFO L470 AbstractCegarLoop]: Abstraction has 155427 states and 287880 transitions. [2021-11-07 01:28:53,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:53,794 INFO L276 IsEmpty]: Start isEmpty. Operand 155427 states and 287880 transitions. [2021-11-07 01:28:53,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:28:53,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:53,795 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] [2021-11-07 01:28:53,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:53,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:53,998 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:53,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:53,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1672701872, now seen corresponding path program 1 times [2021-11-07 01:28:53,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:53,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548388234] [2021-11-07 01:28:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:53,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:53,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:54,001 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:54,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2365cddb-0099-487b-b217-fa49b5db8094/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:28:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:54,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:28:54,633 INFO L286 TraceCheckSpWp]: Computing forward predicates...