./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product01.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_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/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_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/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_73f3b15c-7d27-4c89-940a-27e872b8f94e/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 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:22:29,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:22:29,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:22:29,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:22:29,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:22:29,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:22:29,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:22:29,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:22:29,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:22:29,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:22:29,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:22:29,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:22:29,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:22:29,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:22:29,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:22:29,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:22:29,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:22:29,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:22:29,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:22:29,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:22:29,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:22:29,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:22:29,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:22:29,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:22:29,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:22:29,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:22:29,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:22:29,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:22:29,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:22:29,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:22:29,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:22:29,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:22:29,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:22:29,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:22:29,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:22:29,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:22:29,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:22:29,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:22:29,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:22:29,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:22:29,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:22:29,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:22:29,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:22:29,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:22:29,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:22:29,436 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:22:29,437 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:22:29,437 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:22:29,437 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:22:29,438 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:22:29,438 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:22:29,438 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:22:29,439 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:22:29,440 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:22:29,440 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:22:29,441 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:22:29,441 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:22:29,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:22:29,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:22:29,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:22:29,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:22:29,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:22:29,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:22:29,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:22:29,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:22:29,444 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:22:29,444 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:22:29,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:22:29,445 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:22:29,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:22:29,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:22:29,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:22:29,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:22:29,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:22:29,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:22:29,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:22:29,450 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:22:29,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:22:29,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:22:29,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:22:29,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:22:29,451 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_73f3b15c-7d27-4c89-940a-27e872b8f94e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 [2021-11-07 02:22:29,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:22:29,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:22:29,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:22:29,852 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:22:29,853 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:22:29,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2021-11-07 02:22:29,945 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/data/ead9a845c/0ead05ac22e141cf9a62aae24b869c9f/FLAGf9064ad6d [2021-11-07 02:22:30,802 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:22:30,803 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2021-11-07 02:22:30,831 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/data/ead9a845c/0ead05ac22e141cf9a62aae24b869c9f/FLAGf9064ad6d [2021-11-07 02:22:30,935 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/data/ead9a845c/0ead05ac22e141cf9a62aae24b869c9f [2021-11-07 02:22:30,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:22:30,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:22:30,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:22:30,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:22:30,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:22:30,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:22:30" (1/1) ... [2021-11-07 02:22:30,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:30, skipping insertion in model container [2021-11-07 02:22:30,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:22:30" (1/1) ... [2021-11-07 02:22:30,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:22:31,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:22:31,695 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_73f3b15c-7d27-4c89-940a-27e872b8f94e/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2021-11-07 02:22:31,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:22:31,789 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:22:31,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@53683ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:31, skipping insertion in model container [2021-11-07 02:22:31,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:22:31,791 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:22:31,794 INFO L168 Benchmark]: Toolchain (without parser) took 852.17 ms. Allocated memory was 96.5 MB in the beginning and 140.5 MB in the end (delta: 44.0 MB). Free memory was 56.8 MB in the beginning and 101.5 MB in the end (delta: -44.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-11-07 02:22:31,797 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory was 75.6 MB in the beginning and 75.5 MB in the end (delta: 70.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:22:31,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 848.53 ms. Allocated memory was 96.5 MB in the beginning and 140.5 MB in the end (delta: 44.0 MB). Free memory was 56.5 MB in the beginning and 101.5 MB in the end (delta: -44.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-11-07 02:22:31,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory was 75.6 MB in the beginning and 75.5 MB in the end (delta: 70.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 848.53 ms. Allocated memory was 96.5 MB in the beginning and 140.5 MB in the end (delta: 44.0 MB). Free memory was 56.5 MB in the beginning and 101.5 MB in the end (delta: -44.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1506]: 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_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/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_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/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_73f3b15c-7d27-4c89-940a-27e872b8f94e/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 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:22:34,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:22:34,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:22:34,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:22:34,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:22:34,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:22:34,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:22:34,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:22:34,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:22:34,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:22:34,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:22:34,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:22:34,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:22:34,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:22:34,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:22:34,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:22:34,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:22:34,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:22:34,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:22:34,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:22:34,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:22:34,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:22:34,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:22:34,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:22:34,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:22:34,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:22:34,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:22:34,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:22:34,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:22:34,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:22:34,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:22:34,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:22:34,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:22:34,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:22:34,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:22:34,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:22:34,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:22:34,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:22:34,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:22:34,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:22:34,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:22:34,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:22:34,395 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:22:34,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:22:34,396 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:22:34,396 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:22:34,397 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:22:34,397 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:22:34,397 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:22:34,398 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:22:34,398 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:22:34,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:22:34,399 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:22:34,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:22:34,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:22:34,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:22:34,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:22:34,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:22:34,401 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:22:34,401 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:22:34,401 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:22:34,402 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:22:34,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:22:34,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:22:34,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:22:34,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:22:34,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:22:34,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:22:34,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:22:34,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:22:34,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:22:34,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:22:34,405 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:22:34,405 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:22:34,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:22:34,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:22:34,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:22:34,407 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_73f3b15c-7d27-4c89-940a-27e872b8f94e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 [2021-11-07 02:22:34,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:22:34,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:22:34,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:22:34,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:22:34,907 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:22:34,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2021-11-07 02:22:35,009 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/data/11b7456a0/df580bac9f544fc7860194fd14816ad0/FLAGd05d3392a [2021-11-07 02:22:35,930 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:22:35,931 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2021-11-07 02:22:35,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/data/11b7456a0/df580bac9f544fc7860194fd14816ad0/FLAGd05d3392a [2021-11-07 02:22:36,059 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/data/11b7456a0/df580bac9f544fc7860194fd14816ad0 [2021-11-07 02:22:36,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:22:36,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:22:36,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:22:36,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:22:36,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:22:36,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:22:36" (1/1) ... [2021-11-07 02:22:36,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e5fa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:36, skipping insertion in model container [2021-11-07 02:22:36,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:22:36" (1/1) ... [2021-11-07 02:22:36,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:22:36,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:22:36,879 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_73f3b15c-7d27-4c89-940a-27e872b8f94e/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2021-11-07 02:22:37,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:22:37,036 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:22:37,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:22:37,158 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_73f3b15c-7d27-4c89-940a-27e872b8f94e/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2021-11-07 02:22:37,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:22:37,253 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:22:37,337 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_73f3b15c-7d27-4c89-940a-27e872b8f94e/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2021-11-07 02:22:37,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:22:37,446 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:22:37,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:37 WrapperNode [2021-11-07 02:22:37,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:22:37,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:22:37,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:22:37,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:22:37,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:37" (1/1) ... [2021-11-07 02:22:37,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:37" (1/1) ... [2021-11-07 02:22:37,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:22:37,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:22:37,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:22:37,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:22:38,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:37" (1/1) ... [2021-11-07 02:22:38,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:37" (1/1) ... [2021-11-07 02:22:38,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:37" (1/1) ... [2021-11-07 02:22:38,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:37" (1/1) ... [2021-11-07 02:22:38,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:37" (1/1) ... [2021-11-07 02:22:38,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:37" (1/1) ... [2021-11-07 02:22:38,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:37" (1/1) ... [2021-11-07 02:22:38,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:22:38,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:22:38,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:22:38,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:22:38,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:37" (1/1) ... [2021-11-07 02:22:38,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:22:38,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:22:38,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:22:38,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:22:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:22:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:22:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:22:38,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:22:56,029 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:22:56,030 INFO L299 CfgBuilder]: Removed 1107 assume(true) statements. [2021-11-07 02:22:56,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:22:56 BoogieIcfgContainer [2021-11-07 02:22:56,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:22:56,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:22:56,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:22:56,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:22:56,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:22:36" (1/3) ... [2021-11-07 02:22:56,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23889fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:22:56, skipping insertion in model container [2021-11-07 02:22:56,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:37" (2/3) ... [2021-11-07 02:22:56,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23889fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:22:56, skipping insertion in model container [2021-11-07 02:22:56,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:22:56" (3/3) ... [2021-11-07 02:22:56,051 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product01.cil.c [2021-11-07 02:22:56,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:22:56,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 02:22:56,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:22:56,145 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:22:56,146 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 02:22:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 5593 states, 5582 states have (on average 1.9061268362594053) internal successors, (10640), 5592 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 02:22:56,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:56,283 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] [2021-11-07 02:22:56,285 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:22:56,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:56,291 INFO L85 PathProgramCache]: Analyzing trace with hash 447399383, now seen corresponding path program 1 times [2021-11-07 02:22:56,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:56,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196741038] [2021-11-07 02:22:56,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:56,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:56,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:56,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:56,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:22:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:56,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:22:56,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:56,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:57,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:57,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:57,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196741038] [2021-11-07 02:22:57,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196741038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:57,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:57,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:22:57,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403111948] [2021-11-07 02:22:57,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:22:57,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:57,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:22:57,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:22:57,142 INFO L87 Difference]: Start difference. First operand has 5593 states, 5582 states have (on average 1.9061268362594053) internal successors, (10640), 5592 states have internal predecessors, (10640), 0 states have call successors, (0), 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 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:00,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:00,090 INFO L93 Difference]: Finished difference Result 38773 states and 73761 transitions. [2021-11-07 02:23:00,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:23:00,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 02:23:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:00,339 INFO L225 Difference]: With dead ends: 38773 [2021-11-07 02:23:00,339 INFO L226 Difference]: Without dead ends: 33181 [2021-11-07 02:23:00,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:23:00,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33181 states. [2021-11-07 02:23:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33181 to 5605. [2021-11-07 02:23:00,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5605 states, 5595 states have (on average 1.9011617515638963) internal successors, (10637), 5604 states have internal predecessors, (10637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:00,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5605 states to 5605 states and 10637 transitions. [2021-11-07 02:23:00,960 INFO L78 Accepts]: Start accepts. Automaton has 5605 states and 10637 transitions. Word has length 41 [2021-11-07 02:23:00,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:00,961 INFO L470 AbstractCegarLoop]: Abstraction has 5605 states and 10637 transitions. [2021-11-07 02:23:00,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:00,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5605 states and 10637 transitions. [2021-11-07 02:23:00,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 02:23:00,974 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:00,975 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] [2021-11-07 02:23:01,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:01,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:01,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:23:01,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:01,191 INFO L85 PathProgramCache]: Analyzing trace with hash 483426753, now seen corresponding path program 1 times [2021-11-07 02:23:01,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:01,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807824941] [2021-11-07 02:23:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:01,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:01,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:01,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:01,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:23:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:01,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:23:01,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:01,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:01,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:01,913 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:01,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807824941] [2021-11-07 02:23:01,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807824941] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:01,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:01,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:23:01,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734851076] [2021-11-07 02:23:01,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:23:01,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:01,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:23:01,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:23:01,918 INFO L87 Difference]: Start difference. First operand 5605 states and 10637 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:02,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:02,258 INFO L93 Difference]: Finished difference Result 11122 states and 21117 transitions. [2021-11-07 02:23:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:23:02,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 02:23:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:02,278 INFO L225 Difference]: With dead ends: 11122 [2021-11-07 02:23:02,278 INFO L226 Difference]: Without dead ends: 5531 [2021-11-07 02:23:02,288 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 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 02:23:02,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2021-11-07 02:23:02,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 5531. [2021-11-07 02:23:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5531 states, 5521 states have (on average 1.9005614924832457) internal successors, (10493), 5530 states have internal predecessors, (10493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:02,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 10493 transitions. [2021-11-07 02:23:02,677 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 10493 transitions. Word has length 43 [2021-11-07 02:23:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:02,678 INFO L470 AbstractCegarLoop]: Abstraction has 5531 states and 10493 transitions. [2021-11-07 02:23:02,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:02,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 10493 transitions. [2021-11-07 02:23:02,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 02:23:02,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:02,681 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] [2021-11-07 02:23:02,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:02,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:02,898 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:23:02,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:02,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1460966817, now seen corresponding path program 1 times [2021-11-07 02:23:02,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:02,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102918832] [2021-11-07 02:23:02,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:02,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:02,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:02,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:02,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:23:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:03,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:23:03,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:03,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:03,720 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:03,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102918832] [2021-11-07 02:23:03,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102918832] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:03,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:03,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:23:03,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994048117] [2021-11-07 02:23:03,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:23:03,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:03,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:23:03,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:23:03,724 INFO L87 Difference]: Start difference. First operand 5531 states and 10493 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:04,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:04,221 INFO L93 Difference]: Finished difference Result 11036 states and 20949 transitions. [2021-11-07 02:23:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:23:04,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 02:23:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:04,239 INFO L225 Difference]: With dead ends: 11036 [2021-11-07 02:23:04,239 INFO L226 Difference]: Without dead ends: 5531 [2021-11-07 02:23:04,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:23:04,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2021-11-07 02:23:04,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 5531. [2021-11-07 02:23:04,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5531 states, 5521 states have (on average 1.8987502264082594) internal successors, (10483), 5530 states have internal predecessors, (10483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:04,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 10483 transitions. [2021-11-07 02:23:04,612 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 10483 transitions. Word has length 45 [2021-11-07 02:23:04,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:04,613 INFO L470 AbstractCegarLoop]: Abstraction has 5531 states and 10483 transitions. [2021-11-07 02:23:04,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:04,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 10483 transitions. [2021-11-07 02:23:04,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 02:23:04,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:04,618 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 02:23:04,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 02:23:04,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:04,836 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:23:04,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:04,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2096276311, now seen corresponding path program 1 times [2021-11-07 02:23:04,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:04,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262987709] [2021-11-07 02:23:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:04,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:04,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:04,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:04,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:23:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:05,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:23:05,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:05,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:05,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:05,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262987709] [2021-11-07 02:23:05,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262987709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:05,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:05,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:23:05,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686583356] [2021-11-07 02:23:05,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:23:05,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:05,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:23:05,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:23:05,738 INFO L87 Difference]: Start difference. First operand 5531 states and 10483 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:11,639 INFO L93 Difference]: Finished difference Result 24872 states and 46719 transitions. [2021-11-07 02:23:11,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 02:23:11,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 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 02:23:11,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:11,709 INFO L225 Difference]: With dead ends: 24872 [2021-11-07 02:23:11,709 INFO L226 Difference]: Without dead ends: 19411 [2021-11-07 02:23:11,725 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-07 02:23:11,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19411 states. [2021-11-07 02:23:12,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19411 to 9691. [2021-11-07 02:23:12,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9691 states, 9681 states have (on average 1.898977378370003) internal successors, (18384), 9690 states have internal predecessors, (18384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:12,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9691 states to 9691 states and 18384 transitions. [2021-11-07 02:23:12,434 INFO L78 Accepts]: Start accepts. Automaton has 9691 states and 18384 transitions. Word has length 49 [2021-11-07 02:23:12,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:12,435 INFO L470 AbstractCegarLoop]: Abstraction has 9691 states and 18384 transitions. [2021-11-07 02:23:12,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:12,435 INFO L276 IsEmpty]: Start isEmpty. Operand 9691 states and 18384 transitions. [2021-11-07 02:23:12,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 02:23:12,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:12,438 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 02:23:12,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:12,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:12,652 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:23:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:12,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2016675758, now seen corresponding path program 1 times [2021-11-07 02:23:12,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:12,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608172955] [2021-11-07 02:23:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:12,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:12,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:12,655 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:12,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:23:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:13,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:23:13,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:13,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:13,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:13,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608172955] [2021-11-07 02:23:13,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608172955] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:13,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:13,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:23:13,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199097905] [2021-11-07 02:23:13,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:23:13,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:13,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:23:13,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:23:13,447 INFO L87 Difference]: Start difference. First operand 9691 states and 18384 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:17,938 INFO L93 Difference]: Finished difference Result 80460 states and 152801 transitions. [2021-11-07 02:23:17,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:23:17,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 02:23:17,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:18,208 INFO L225 Difference]: With dead ends: 80460 [2021-11-07 02:23:18,209 INFO L226 Difference]: Without dead ends: 70839 [2021-11-07 02:23:18,236 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 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 02:23:18,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70839 states. [2021-11-07 02:23:19,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70839 to 18235. [2021-11-07 02:23:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18235 states, 18225 states have (on average 1.8973936899862827) internal successors, (34580), 18234 states have internal predecessors, (34580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18235 states to 18235 states and 34580 transitions. [2021-11-07 02:23:19,989 INFO L78 Accepts]: Start accepts. Automaton has 18235 states and 34580 transitions. Word has length 49 [2021-11-07 02:23:19,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:19,990 INFO L470 AbstractCegarLoop]: Abstraction has 18235 states and 34580 transitions. [2021-11-07 02:23:19,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:19,991 INFO L276 IsEmpty]: Start isEmpty. Operand 18235 states and 34580 transitions. [2021-11-07 02:23:19,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 02:23:19,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:19,994 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 02:23:20,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:20,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:20,213 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:23:20,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:20,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1936380238, now seen corresponding path program 1 times [2021-11-07 02:23:20,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:20,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762423102] [2021-11-07 02:23:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:20,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:20,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:20,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:20,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:23:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:20,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:23:20,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:20,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:20,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:20,936 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:20,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762423102] [2021-11-07 02:23:20,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762423102] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:20,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:20,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:23:20,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875071865] [2021-11-07 02:23:20,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:23:20,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:20,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:23:20,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:23:20,938 INFO L87 Difference]: Start difference. First operand 18235 states and 34580 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:22,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:22,659 INFO L93 Difference]: Finished difference Result 53785 states and 102026 transitions. [2021-11-07 02:23:22,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:23:22,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 02:23:22,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:22,750 INFO L225 Difference]: With dead ends: 53785 [2021-11-07 02:23:22,750 INFO L226 Difference]: Without dead ends: 35582 [2021-11-07 02:23:22,772 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 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 02:23:22,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35582 states. [2021-11-07 02:23:23,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35582 to 18111. [2021-11-07 02:23:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18111 states, 18101 states have (on average 1.8966907905640573) internal successors, (34332), 18110 states have internal predecessors, (34332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18111 states to 18111 states and 34332 transitions. [2021-11-07 02:23:23,875 INFO L78 Accepts]: Start accepts. Automaton has 18111 states and 34332 transitions. Word has length 50 [2021-11-07 02:23:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:23,875 INFO L470 AbstractCegarLoop]: Abstraction has 18111 states and 34332 transitions. [2021-11-07 02:23:23,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:23,876 INFO L276 IsEmpty]: Start isEmpty. Operand 18111 states and 34332 transitions. [2021-11-07 02:23:23,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 02:23:23,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:23,878 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 02:23:23,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:24,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:24,095 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:23:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:24,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1537728245, now seen corresponding path program 1 times [2021-11-07 02:23:24,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:24,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247919714] [2021-11-07 02:23:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:24,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:24,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:24,099 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:24,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:23:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:24,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:23:24,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:24,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:24,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:24,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247919714] [2021-11-07 02:23:24,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247919714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:24,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:24,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:23:24,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721639470] [2021-11-07 02:23:24,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:23:24,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:24,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:23:24,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:23:24,924 INFO L87 Difference]: Start difference. First operand 18111 states and 34332 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:36,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:36,335 INFO L93 Difference]: Finished difference Result 68526 states and 129630 transitions. [2021-11-07 02:23:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:23:36,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 02:23:36,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:36,439 INFO L225 Difference]: With dead ends: 68526 [2021-11-07 02:23:36,439 INFO L226 Difference]: Without dead ends: 50449 [2021-11-07 02:23:36,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:23:36,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50449 states. [2021-11-07 02:23:38,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50449 to 34959. [2021-11-07 02:23:38,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34959 states, 34949 states have (on average 1.8783942315946094) internal successors, (65648), 34958 states have internal predecessors, (65648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34959 states to 34959 states and 65648 transitions. [2021-11-07 02:23:38,503 INFO L78 Accepts]: Start accepts. Automaton has 34959 states and 65648 transitions. Word has length 50 [2021-11-07 02:23:38,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:38,503 INFO L470 AbstractCegarLoop]: Abstraction has 34959 states and 65648 transitions. [2021-11-07 02:23:38,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:38,504 INFO L276 IsEmpty]: Start isEmpty. Operand 34959 states and 65648 transitions. [2021-11-07 02:23:38,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 02:23:38,505 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:38,506 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:23:38,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:38,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:38,707 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:23:38,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:38,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1088525188, now seen corresponding path program 1 times [2021-11-07 02:23:38,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:38,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268117370] [2021-11-07 02:23:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:38,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:38,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:38,710 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:38,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:23:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:39,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:23:39,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:39,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:39,603 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:39,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268117370] [2021-11-07 02:23:39,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268117370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:39,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:39,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:23:39,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335071190] [2021-11-07 02:23:39,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:23:39,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:39,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:23:39,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:23:39,609 INFO L87 Difference]: Start difference. First operand 34959 states and 65648 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:43,818 INFO L93 Difference]: Finished difference Result 136885 states and 257225 transitions. [2021-11-07 02:23:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:23:43,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 02:23:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:44,019 INFO L225 Difference]: With dead ends: 136885 [2021-11-07 02:23:44,019 INFO L226 Difference]: Without dead ends: 101963 [2021-11-07 02:23:44,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:23:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101963 states. [2021-11-07 02:23:46,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101963 to 34845. [2021-11-07 02:23:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34845 states, 34835 states have (on average 1.8721975025118416) internal successors, (65218), 34844 states have internal predecessors, (65218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:46,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34845 states to 34845 states and 65218 transitions. [2021-11-07 02:23:46,319 INFO L78 Accepts]: Start accepts. Automaton has 34845 states and 65218 transitions. Word has length 54 [2021-11-07 02:23:46,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:46,320 INFO L470 AbstractCegarLoop]: Abstraction has 34845 states and 65218 transitions. [2021-11-07 02:23:46,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:46,320 INFO L276 IsEmpty]: Start isEmpty. Operand 34845 states and 65218 transitions. [2021-11-07 02:23:46,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 02:23:46,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:46,321 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 02:23:46,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:46,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:46,526 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:23:46,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash 211070977, now seen corresponding path program 1 times [2021-11-07 02:23:46,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:46,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111845020] [2021-11-07 02:23:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:46,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:46,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:46,528 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:46,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:23:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:47,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:23:47,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:47,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:47,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:47,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111845020] [2021-11-07 02:23:47,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111845020] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:47,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:47,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:23:47,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946855979] [2021-11-07 02:23:47,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:23:47,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:47,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:23:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:23:47,509 INFO L87 Difference]: Start difference. First operand 34845 states and 65218 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:57,959 INFO L93 Difference]: Finished difference Result 284943 states and 535245 transitions. [2021-11-07 02:23:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:23:57,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 02:23:57,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:58,525 INFO L225 Difference]: With dead ends: 284943 [2021-11-07 02:23:58,526 INFO L226 Difference]: Without dead ends: 250154 [2021-11-07 02:23:58,590 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 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 02:23:58,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250154 states. [2021-11-07 02:24:02,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250154 to 66833. [2021-11-07 02:24:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66833 states, 66823 states have (on average 1.8722146566302023) internal successors, (125107), 66832 states have internal predecessors, (125107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:03,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66833 states to 66833 states and 125107 transitions. [2021-11-07 02:24:03,048 INFO L78 Accepts]: Start accepts. Automaton has 66833 states and 125107 transitions. Word has length 55 [2021-11-07 02:24:03,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:03,049 INFO L470 AbstractCegarLoop]: Abstraction has 66833 states and 125107 transitions. [2021-11-07 02:24:03,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:03,049 INFO L276 IsEmpty]: Start isEmpty. Operand 66833 states and 125107 transitions. [2021-11-07 02:24:03,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 02:24:03,051 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:03,051 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 02:24:03,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:03,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:03,269 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:24:03,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:03,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1453398781, now seen corresponding path program 1 times [2021-11-07 02:24:03,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:03,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301936571] [2021-11-07 02:24:03,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:03,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:03,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:03,274 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:03,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f3b15c-7d27-4c89-940a-27e872b8f94e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:24:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:03,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:24:03,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:04,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:04,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:04,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301936571] [2021-11-07 02:24:04,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301936571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:04,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:04,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:24:04,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473635171] [2021-11-07 02:24:04,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:24:04,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:24:04,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:24:04,228 INFO L87 Difference]: Start difference. First operand 66833 states and 125107 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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)