./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product19.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_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/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_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/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_33d5add9-a3af-4cd3-88e5-c78a304402e6/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 5643166a994eeb2bd259cf18f0a4b43a93b8e6b433c116ad537f0a1a02a75ec3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:12,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:12,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:12,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:12,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:12,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:12,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:12,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:12,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:12,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:12,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:12,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:12,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:12,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:12,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:12,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:12,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:12,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:12,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:12,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:12,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:12,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:12,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:12,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:12,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:12,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:12,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:12,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:12,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:12,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:12,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:12,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:12,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:12,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:12,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:12,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:12,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:12,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:12,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:12,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:12,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:12,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:36:12,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:12,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:12,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:12,424 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:12,424 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:12,425 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:12,425 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:36:12,425 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:12,432 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:12,432 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:36:12,433 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:36:12,433 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:12,434 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:36:12,434 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:36:12,434 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:36:12,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:12,435 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:36:12,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:36:12,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:36:12,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:12,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:36:12,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:12,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:36:12,437 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:12,437 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:36:12,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:36:12,438 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:12,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:36:12,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:12,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:12,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:12,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:12,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:12,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:36:12,441 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:36:12,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:36:12,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:36:12,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:12,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:12,443 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_33d5add9-a3af-4cd3-88e5-c78a304402e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5643166a994eeb2bd259cf18f0a4b43a93b8e6b433c116ad537f0a1a02a75ec3 [2021-11-07 01:36:12,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:12,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:12,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:12,754 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:12,768 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:12,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c [2021-11-07 01:36:12,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/data/3d168eeef/175c264b93d64d9c80327332a8c4ab26/FLAGe02ebed72 [2021-11-07 01:36:13,462 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:13,463 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c [2021-11-07 01:36:13,487 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/data/3d168eeef/175c264b93d64d9c80327332a8c4ab26/FLAGe02ebed72 [2021-11-07 01:36:13,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/data/3d168eeef/175c264b93d64d9c80327332a8c4ab26 [2021-11-07 01:36:13,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:13,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:13,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:13,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:13,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:13,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:13" (1/1) ... [2021-11-07 01:36:13,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781baa50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:13, skipping insertion in model container [2021-11-07 01:36:13,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:13" (1/1) ... [2021-11-07 01:36:13,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:13,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:14,302 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_33d5add9-a3af-4cd3-88e5-c78a304402e6/sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c[49225,49238] [2021-11-07 01:36:14,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:14,376 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:36:14,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c5da74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:14, skipping insertion in model container [2021-11-07 01:36:14,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:14,377 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:36:14,380 INFO L168 Benchmark]: Toolchain (without parser) took 712.89 ms. Allocated memory is still 88.1 MB. Free memory was 65.2 MB in the beginning and 49.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:14,380 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:36:14,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.11 ms. Allocated memory is still 88.1 MB. Free memory was 65.0 MB in the beginning and 49.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:14,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 707.11 ms. Allocated memory is still 88.1 MB. Free memory was 65.0 MB in the beginning and 49.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1769]: 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_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/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_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/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_33d5add9-a3af-4cd3-88e5-c78a304402e6/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 5643166a994eeb2bd259cf18f0a4b43a93b8e6b433c116ad537f0a1a02a75ec3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:16,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:16,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:16,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:16,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:16,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:17,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:17,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:17,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:17,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:17,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:17,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:17,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:17,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:17,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:17,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:17,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:17,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:17,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:17,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:17,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:17,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:17,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:17,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:17,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:17,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:17,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:17,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:17,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:17,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:17,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:17,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:17,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:17,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:17,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:17,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:17,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:17,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:17,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:17,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:17,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:17,085 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:36:17,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:17,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:17,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:17,136 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:17,136 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:17,137 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:17,137 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:17,137 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:17,137 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:17,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:17,140 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:36:17,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:36:17,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:17,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:36:17,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:17,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:36:17,142 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:17,142 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:36:17,142 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:36:17,142 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:36:17,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:36:17,143 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:17,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:36:17,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:17,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:36:17,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:17,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:17,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:17,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:17,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:36:17,145 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:36:17,146 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:17,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:36:17,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:17,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:17,147 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_33d5add9-a3af-4cd3-88e5-c78a304402e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5643166a994eeb2bd259cf18f0a4b43a93b8e6b433c116ad537f0a1a02a75ec3 [2021-11-07 01:36:17,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:17,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:17,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:17,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:17,685 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:17,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c [2021-11-07 01:36:17,761 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/data/44d1ec33f/795bc40ac2b34f02beb35a1e5cab4781/FLAG39dadc009 [2021-11-07 01:36:18,468 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:18,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c [2021-11-07 01:36:18,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/data/44d1ec33f/795bc40ac2b34f02beb35a1e5cab4781/FLAG39dadc009 [2021-11-07 01:36:18,693 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/data/44d1ec33f/795bc40ac2b34f02beb35a1e5cab4781 [2021-11-07 01:36:18,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:18,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:18,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:18,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:18,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:18,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:18" (1/1) ... [2021-11-07 01:36:18,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@195dfe30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:18, skipping insertion in model container [2021-11-07 01:36:18,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:18" (1/1) ... [2021-11-07 01:36:18,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:18,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:19,402 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_33d5add9-a3af-4cd3-88e5-c78a304402e6/sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c[49225,49238] [2021-11-07 01:36:19,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:19,485 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:36:19,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:19,645 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_33d5add9-a3af-4cd3-88e5-c78a304402e6/sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c[49225,49238] [2021-11-07 01:36:19,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:19,712 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:36:19,834 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_33d5add9-a3af-4cd3-88e5-c78a304402e6/sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c[49225,49238] [2021-11-07 01:36:19,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:19,886 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:36:19,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:19 WrapperNode [2021-11-07 01:36:19,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:19,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:19,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:36:19,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:36:19,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:19" (1/1) ... [2021-11-07 01:36:19,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:19" (1/1) ... [2021-11-07 01:36:20,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:20,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:36:20,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:36:20,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:36:20,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:19" (1/1) ... [2021-11-07 01:36:20,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:19" (1/1) ... [2021-11-07 01:36:20,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:19" (1/1) ... [2021-11-07 01:36:20,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:19" (1/1) ... [2021-11-07 01:36:20,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:19" (1/1) ... [2021-11-07 01:36:21,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:19" (1/1) ... [2021-11-07 01:36:21,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:19" (1/1) ... [2021-11-07 01:36:21,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:36:21,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:36:21,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:36:21,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:36:21,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:19" (1/1) ... [2021-11-07 01:36:21,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:21,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:36:21,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:36:21,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:36:21,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:36:21,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:36:21,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:36:21,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:36:37,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:36:37,917 INFO L299 CfgBuilder]: Removed 1383 assume(true) statements. [2021-11-07 01:36:37,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:36:37 BoogieIcfgContainer [2021-11-07 01:36:37,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:36:37,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:36:37,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:36:37,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:36:37,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:36:18" (1/3) ... [2021-11-07 01:36:37,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c50326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:36:37, skipping insertion in model container [2021-11-07 01:36:37,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:19" (2/3) ... [2021-11-07 01:36:37,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c50326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:36:37, skipping insertion in model container [2021-11-07 01:36:37,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:36:37" (3/3) ... [2021-11-07 01:36:37,937 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product19.cil.c [2021-11-07 01:36:37,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:36:37,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:36:38,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:36:38,056 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:36:38,056 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:36:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 5907 states, 5901 states have (on average 1.8867988476529403) internal successors, (11134), 5906 states have internal predecessors, (11134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:38,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:36:38,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:38,250 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:38,251 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:36:38,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:38,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1814038652, now seen corresponding path program 1 times [2021-11-07 01:36:38,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:38,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237705103] [2021-11-07 01:36:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:38,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:38,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:38,294 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:38,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:36:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:38,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:36:38,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:39,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:39,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:39,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:39,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237705103] [2021-11-07 01:36:39,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237705103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:39,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:39,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:36:39,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075300087] [2021-11-07 01:36:39,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:36:39,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:39,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:36:39,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:36:39,279 INFO L87 Difference]: Start difference. First operand has 5907 states, 5901 states have (on average 1.8867988476529403) internal successors, (11134), 5906 states have internal predecessors, (11134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:40,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:40,313 INFO L93 Difference]: Finished difference Result 16594 states and 31275 transitions. [2021-11-07 01:36:40,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:36:40,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:36:40,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:40,421 INFO L225 Difference]: With dead ends: 16594 [2021-11-07 01:36:40,422 INFO L226 Difference]: Without dead ends: 10687 [2021-11-07 01:36:40,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:36:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10687 states. [2021-11-07 01:36:40,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10687 to 5903. [2021-11-07 01:36:40,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5903 states, 5898 states have (on average 1.8843675822312649) internal successors, (11114), 5902 states have internal predecessors, (11114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 11114 transitions. [2021-11-07 01:36:40,891 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 11114 transitions. Word has length 44 [2021-11-07 01:36:40,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:40,891 INFO L470 AbstractCegarLoop]: Abstraction has 5903 states and 11114 transitions. [2021-11-07 01:36:40,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 11114 transitions. [2021-11-07 01:36:40,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:36:40,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:40,896 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:40,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:41,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:41,118 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:36:41,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:41,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1234164848, now seen corresponding path program 1 times [2021-11-07 01:36:41,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:41,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537284623] [2021-11-07 01:36:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:41,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:41,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:41,121 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:41,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:36:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:41,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:36:41,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:41,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:41,774 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:41,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537284623] [2021-11-07 01:36:41,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537284623] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:41,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:41,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:36:41,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420310246] [2021-11-07 01:36:41,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:36:41,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:41,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:36:41,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:36:41,779 INFO L87 Difference]: Start difference. First operand 5903 states and 11114 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:43,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:43,015 INFO L93 Difference]: Finished difference Result 23577 states and 44381 transitions. [2021-11-07 01:36:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:36:43,016 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:36:43,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:43,214 INFO L225 Difference]: With dead ends: 23577 [2021-11-07 01:36:43,214 INFO L226 Difference]: Without dead ends: 17695 [2021-11-07 01:36:43,228 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:36:43,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17695 states. [2021-11-07 01:36:43,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17695 to 5881. [2021-11-07 01:36:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5881 states, 5876 states have (on average 1.8827433628318584) internal successors, (11063), 5880 states have internal predecessors, (11063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:43,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 11063 transitions. [2021-11-07 01:36:43,629 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 11063 transitions. Word has length 49 [2021-11-07 01:36:43,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:43,631 INFO L470 AbstractCegarLoop]: Abstraction has 5881 states and 11063 transitions. [2021-11-07 01:36:43,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:43,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 11063 transitions. [2021-11-07 01:36:43,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:36:43,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:43,648 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:43,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:43,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:43,865 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:36:43,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:43,865 INFO L85 PathProgramCache]: Analyzing trace with hash -396578672, now seen corresponding path program 1 times [2021-11-07 01:36:43,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:43,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304199794] [2021-11-07 01:36:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:43,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:43,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:43,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:43,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:36:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:44,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:36:44,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:44,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:44,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:44,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304199794] [2021-11-07 01:36:44,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304199794] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:44,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:44,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:36:44,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393537152] [2021-11-07 01:36:44,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:36:44,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:44,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:36:44,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:36:44,587 INFO L87 Difference]: Start difference. First operand 5881 states and 11063 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:45,272 INFO L93 Difference]: Finished difference Result 16453 states and 30963 transitions. [2021-11-07 01:36:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:36:45,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 01:36:45,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:45,308 INFO L225 Difference]: With dead ends: 16453 [2021-11-07 01:36:45,308 INFO L226 Difference]: Without dead ends: 10593 [2021-11-07 01:36:45,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:36:45,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10593 states. [2021-11-07 01:36:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10593 to 5881. [2021-11-07 01:36:45,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5881 states, 5876 states have (on average 1.881722260040844) internal successors, (11057), 5880 states have internal predecessors, (11057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 11057 transitions. [2021-11-07 01:36:45,568 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 11057 transitions. Word has length 50 [2021-11-07 01:36:45,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:45,569 INFO L470 AbstractCegarLoop]: Abstraction has 5881 states and 11057 transitions. [2021-11-07 01:36:45,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:45,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 11057 transitions. [2021-11-07 01:36:45,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:36:45,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:45,573 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:45,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:45,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:45,789 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:36:45,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:45,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1199075869, now seen corresponding path program 1 times [2021-11-07 01:36:45,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:45,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352910978] [2021-11-07 01:36:45,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:45,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:45,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:45,793 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:45,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:36:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:46,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:36:46,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:46,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:46,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:46,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352910978] [2021-11-07 01:36:46,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352910978] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:46,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:46,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:36:46,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112384951] [2021-11-07 01:36:46,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:36:46,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:46,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:36:46,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:36:46,626 INFO L87 Difference]: Start difference. First operand 5881 states and 11057 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:48,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:48,845 INFO L93 Difference]: Finished difference Result 32940 states and 61976 transitions. [2021-11-07 01:36:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:36:48,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 01:36:48,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:48,968 INFO L225 Difference]: With dead ends: 32940 [2021-11-07 01:36:48,968 INFO L226 Difference]: Without dead ends: 27083 [2021-11-07 01:36:48,984 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:36:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27083 states. [2021-11-07 01:36:49,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27083 to 5883. [2021-11-07 01:36:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5883 states, 5878 states have (on average 1.8805716230010208) internal successors, (11054), 5882 states have internal predecessors, (11054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5883 states to 5883 states and 11054 transitions. [2021-11-07 01:36:49,404 INFO L78 Accepts]: Start accepts. Automaton has 5883 states and 11054 transitions. Word has length 55 [2021-11-07 01:36:49,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:49,407 INFO L470 AbstractCegarLoop]: Abstraction has 5883 states and 11054 transitions. [2021-11-07 01:36:49,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 5883 states and 11054 transitions. [2021-11-07 01:36:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:36:49,410 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:49,410 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:49,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:49,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:49,625 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:36:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash 136095439, now seen corresponding path program 1 times [2021-11-07 01:36:49,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:49,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526012022] [2021-11-07 01:36:49,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:49,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:49,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:49,630 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:49,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:36:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:50,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:36:50,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:50,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:50,599 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:50,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526012022] [2021-11-07 01:36:50,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526012022] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:50,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:50,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:36:50,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123943624] [2021-11-07 01:36:50,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:36:50,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:50,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:36:50,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:36:50,602 INFO L87 Difference]: Start difference. First operand 5883 states and 11054 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:54,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:54,591 INFO L93 Difference]: Finished difference Result 21357 states and 40284 transitions. [2021-11-07 01:36:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:36:54,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 01:36:54,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:54,638 INFO L225 Difference]: With dead ends: 21357 [2021-11-07 01:36:54,638 INFO L226 Difference]: Without dead ends: 15504 [2021-11-07 01:36:54,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:36:54,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15504 states. [2021-11-07 01:36:54,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15504 to 5883. [2021-11-07 01:36:54,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5883 states, 5878 states have (on average 1.834977883633889) internal successors, (10786), 5882 states have internal predecessors, (10786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:54,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5883 states to 5883 states and 10786 transitions. [2021-11-07 01:36:54,910 INFO L78 Accepts]: Start accepts. Automaton has 5883 states and 10786 transitions. Word has length 56 [2021-11-07 01:36:54,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:54,911 INFO L470 AbstractCegarLoop]: Abstraction has 5883 states and 10786 transitions. [2021-11-07 01:36:54,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:54,912 INFO L276 IsEmpty]: Start isEmpty. Operand 5883 states and 10786 transitions. [2021-11-07 01:36:54,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:36:54,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:54,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:54,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:55,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:55,141 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:36:55,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:55,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1211445735, now seen corresponding path program 1 times [2021-11-07 01:36:55,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:55,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627965106] [2021-11-07 01:36:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:55,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:55,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:55,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:55,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:36:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:55,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:36:55,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:55,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:56,109 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:56,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627965106] [2021-11-07 01:36:56,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627965106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:56,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:56,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:36:56,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328089747] [2021-11-07 01:36:56,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:36:56,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:36:56,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:36:56,112 INFO L87 Difference]: Start difference. First operand 5883 states and 10786 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:59,413 INFO L93 Difference]: Finished difference Result 29699 states and 55293 transitions. [2021-11-07 01:36:59,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:36:59,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 01:36:59,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:59,480 INFO L225 Difference]: With dead ends: 29699 [2021-11-07 01:36:59,480 INFO L226 Difference]: Without dead ends: 23864 [2021-11-07 01:36:59,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:36:59,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23864 states. [2021-11-07 01:36:59,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23864 to 8144. [2021-11-07 01:36:59,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8144 states, 8139 states have (on average 1.8353606094114756) internal successors, (14938), 8143 states have internal predecessors, (14938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8144 states to 8144 states and 14938 transitions. [2021-11-07 01:36:59,978 INFO L78 Accepts]: Start accepts. Automaton has 8144 states and 14938 transitions. Word has length 68 [2021-11-07 01:36:59,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:59,979 INFO L470 AbstractCegarLoop]: Abstraction has 8144 states and 14938 transitions. [2021-11-07 01:36:59,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 8144 states and 14938 transitions. [2021-11-07 01:36:59,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:36:59,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:59,982 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:59,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:00,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:00,196 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:37:00,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:00,197 INFO L85 PathProgramCache]: Analyzing trace with hash -481724487, now seen corresponding path program 1 times [2021-11-07 01:37:00,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:00,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92541715] [2021-11-07 01:37:00,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:00,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:00,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:00,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:00,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:37:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:00,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:00,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:01,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:01,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:01,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92541715] [2021-11-07 01:37:01,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92541715] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:01,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:01,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:37:01,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970270446] [2021-11-07 01:37:01,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:01,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:01,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:01,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:01,242 INFO L87 Difference]: Start difference. First operand 8144 states and 14938 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:05,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:05,242 INFO L93 Difference]: Finished difference Result 38948 states and 71939 transitions. [2021-11-07 01:37:05,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:37:05,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 01:37:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:05,290 INFO L225 Difference]: With dead ends: 38948 [2021-11-07 01:37:05,291 INFO L226 Difference]: Without dead ends: 30851 [2021-11-07 01:37:05,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:37:05,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30851 states. [2021-11-07 01:37:05,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30851 to 10478. [2021-11-07 01:37:05,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10478 states, 10473 states have (on average 1.833763009643846) internal successors, (19205), 10477 states have internal predecessors, (19205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10478 states to 10478 states and 19205 transitions. [2021-11-07 01:37:05,962 INFO L78 Accepts]: Start accepts. Automaton has 10478 states and 19205 transitions. Word has length 70 [2021-11-07 01:37:05,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:05,963 INFO L470 AbstractCegarLoop]: Abstraction has 10478 states and 19205 transitions. [2021-11-07 01:37:05,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand 10478 states and 19205 transitions. [2021-11-07 01:37:05,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:37:05,967 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:05,967 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:05,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 01:37:06,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:06,183 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:37:06,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:06,183 INFO L85 PathProgramCache]: Analyzing trace with hash -821589140, now seen corresponding path program 1 times [2021-11-07 01:37:06,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:06,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43300862] [2021-11-07 01:37:06,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:06,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:06,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:06,186 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:06,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:37:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:06,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:37:06,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:06,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:07,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:07,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43300862] [2021-11-07 01:37:07,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43300862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:07,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:07,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:37:07,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168322261] [2021-11-07 01:37:07,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:07,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:07,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:07,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:07,054 INFO L87 Difference]: Start difference. First operand 10478 states and 19205 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:10,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:10,994 INFO L93 Difference]: Finished difference Result 39049 states and 72332 transitions. [2021-11-07 01:37:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:37:10,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:37:10,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:11,030 INFO L225 Difference]: With dead ends: 39049 [2021-11-07 01:37:11,031 INFO L226 Difference]: Without dead ends: 28605 [2021-11-07 01:37:11,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28605 states. [2021-11-07 01:37:11,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28605 to 18253. [2021-11-07 01:37:11,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18253 states, 18248 states have (on average 1.8208570802279702) internal successors, (33227), 18252 states have internal predecessors, (33227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:11,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18253 states to 18253 states and 33227 transitions. [2021-11-07 01:37:11,801 INFO L78 Accepts]: Start accepts. Automaton has 18253 states and 33227 transitions. Word has length 71 [2021-11-07 01:37:11,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:11,801 INFO L470 AbstractCegarLoop]: Abstraction has 18253 states and 33227 transitions. [2021-11-07 01:37:11,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:11,802 INFO L276 IsEmpty]: Start isEmpty. Operand 18253 states and 33227 transitions. [2021-11-07 01:37:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:37:11,804 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:11,804 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:11,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:12,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:12,020 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:37:12,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:12,021 INFO L85 PathProgramCache]: Analyzing trace with hash -852217116, now seen corresponding path program 1 times [2021-11-07 01:37:12,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:12,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646481311] [2021-11-07 01:37:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:12,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:12,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:12,023 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:12,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:37:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:12,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:12,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:12,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:12,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:12,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646481311] [2021-11-07 01:37:12,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646481311] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:12,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:12,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:37:12,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748398584] [2021-11-07 01:37:12,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:12,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:12,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:12,961 INFO L87 Difference]: Start difference. First operand 18253 states and 33227 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:16,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:16,853 INFO L93 Difference]: Finished difference Result 148106 states and 270181 transitions. [2021-11-07 01:37:16,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:37:16,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 01:37:16,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:17,058 INFO L225 Difference]: With dead ends: 148106 [2021-11-07 01:37:17,058 INFO L226 Difference]: Without dead ends: 129896 [2021-11-07 01:37:17,092 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:37:17,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129896 states. [2021-11-07 01:37:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129896 to 35413. [2021-11-07 01:37:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35413 states, 35408 states have (on average 1.8218481699051061) internal successors, (64508), 35412 states have internal predecessors, (64508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:19,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35413 states to 35413 states and 64508 transitions. [2021-11-07 01:37:19,691 INFO L78 Accepts]: Start accepts. Automaton has 35413 states and 64508 transitions. Word has length 73 [2021-11-07 01:37:19,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:19,691 INFO L470 AbstractCegarLoop]: Abstraction has 35413 states and 64508 transitions. [2021-11-07 01:37:19,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:19,692 INFO L276 IsEmpty]: Start isEmpty. Operand 35413 states and 64508 transitions. [2021-11-07 01:37:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:37:19,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:19,695 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:19,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:19,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:19,908 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:37:19,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:19,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1696222618, now seen corresponding path program 1 times [2021-11-07 01:37:19,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:19,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507619200] [2021-11-07 01:37:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:19,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:19,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:19,909 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:19,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:37:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:20,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:37:20,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:20,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:20,818 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:20,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507619200] [2021-11-07 01:37:20,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507619200] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:20,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:20,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:37:20,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784237351] [2021-11-07 01:37:20,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:37:20,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:20,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:37:20,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:20,820 INFO L87 Difference]: Start difference. First operand 35413 states and 64508 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:24,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:24,921 INFO L93 Difference]: Finished difference Result 86916 states and 159767 transitions. [2021-11-07 01:37:24,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:37:24,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 01:37:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:25,135 INFO L225 Difference]: With dead ends: 86916 [2021-11-07 01:37:25,135 INFO L226 Difference]: Without dead ends: 67772 [2021-11-07 01:37:25,153 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:37:25,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67772 states. [2021-11-07 01:37:26,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67772 to 35365. [2021-11-07 01:37:26,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35365 states, 35360 states have (on average 1.821606334841629) internal successors, (64412), 35364 states have internal predecessors, (64412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:26,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35365 states to 35365 states and 64412 transitions. [2021-11-07 01:37:26,639 INFO L78 Accepts]: Start accepts. Automaton has 35365 states and 64412 transitions. Word has length 73 [2021-11-07 01:37:26,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:26,640 INFO L470 AbstractCegarLoop]: Abstraction has 35365 states and 64412 transitions. [2021-11-07 01:37:26,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 35365 states and 64412 transitions. [2021-11-07 01:37:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 01:37:26,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:26,643 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:26,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:26,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:26,849 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:37:26,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:26,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1324389536, now seen corresponding path program 1 times [2021-11-07 01:37:26,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:26,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999027356] [2021-11-07 01:37:26,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:26,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:26,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:26,851 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:26,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:37:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:27,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:37:27,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:27,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:27,861 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:27,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999027356] [2021-11-07 01:37:27,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999027356] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:27,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:27,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:37:27,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064411324] [2021-11-07 01:37:27,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:27,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:27,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:27,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:27,864 INFO L87 Difference]: Start difference. First operand 35365 states and 64412 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:32,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:32,161 INFO L93 Difference]: Finished difference Result 135375 states and 248267 transitions. [2021-11-07 01:37:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:37:32,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 01:37:32,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:32,355 INFO L225 Difference]: With dead ends: 135375 [2021-11-07 01:37:32,356 INFO L226 Difference]: Without dead ends: 116260 [2021-11-07 01:37:32,385 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:37:32,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116260 states. [2021-11-07 01:37:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116260 to 53109. [2021-11-07 01:37:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53109 states, 53104 states have (on average 1.8165863211810787) internal successors, (96468), 53108 states have internal predecessors, (96468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53109 states to 53109 states and 96468 transitions. [2021-11-07 01:37:35,178 INFO L78 Accepts]: Start accepts. Automaton has 53109 states and 96468 transitions. Word has length 75 [2021-11-07 01:37:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:35,178 INFO L470 AbstractCegarLoop]: Abstraction has 53109 states and 96468 transitions. [2021-11-07 01:37:35,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:35,179 INFO L276 IsEmpty]: Start isEmpty. Operand 53109 states and 96468 transitions. [2021-11-07 01:37:35,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:37:35,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:35,181 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:35,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:35,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:35,382 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:37:35,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:35,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2050122868, now seen corresponding path program 1 times [2021-11-07 01:37:35,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:35,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144297329] [2021-11-07 01:37:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:35,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:35,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:35,384 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:35,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:37:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:35,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:37:35,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:36,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:36,522 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:36,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144297329] [2021-11-07 01:37:36,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144297329] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:36,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:36,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:37:36,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736038635] [2021-11-07 01:37:36,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:37:36,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:36,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:37:36,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:36,524 INFO L87 Difference]: Start difference. First operand 53109 states and 96468 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:47,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:47,288 INFO L93 Difference]: Finished difference Result 237500 states and 434593 transitions. [2021-11-07 01:37:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:37:47,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 01:37:47,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:47,657 INFO L225 Difference]: With dead ends: 237500 [2021-11-07 01:37:47,657 INFO L226 Difference]: Without dead ends: 200641 [2021-11-07 01:37:47,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:37:47,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200641 states. [2021-11-07 01:37:52,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200641 to 78798. [2021-11-07 01:37:52,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78798 states, 78793 states have (on average 1.8250732933128577) internal successors, (143803), 78797 states have internal predecessors, (143803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78798 states to 78798 states and 143803 transitions. [2021-11-07 01:37:52,235 INFO L78 Accepts]: Start accepts. Automaton has 78798 states and 143803 transitions. Word has length 77 [2021-11-07 01:37:52,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:52,235 INFO L470 AbstractCegarLoop]: Abstraction has 78798 states and 143803 transitions. [2021-11-07 01:37:52,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 78798 states and 143803 transitions. [2021-11-07 01:37:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:37:52,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:52,240 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:52,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:52,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:52,444 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:37:52,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:52,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2098749639, now seen corresponding path program 1 times [2021-11-07 01:37:52,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:52,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395410384] [2021-11-07 01:37:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:52,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:52,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:52,446 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:52,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d5add9-a3af-4cd3-88e5-c78a304402e6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:37:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:53,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:53,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:53,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:53,542 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:53,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395410384] [2021-11-07 01:37:53,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395410384] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:53,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:53,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:37:53,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372547492] [2021-11-07 01:37:53,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:37:53,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:53,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:37:53,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:53,545 INFO L87 Difference]: Start difference. First operand 78798 states and 143803 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)