./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.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_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/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_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/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_20898043-70cf-4438-9624-71f1ef2dcf21/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 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:51:44,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:51:44,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:51:44,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:51:44,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:51:44,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:51:44,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:51:44,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:51:44,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:51:44,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:51:44,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:51:44,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:51:44,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:51:44,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:51:44,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:51:44,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:51:44,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:51:44,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:51:44,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:51:44,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:51:44,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:51:44,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:51:44,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:51:44,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:51:44,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:51:44,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:51:44,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:51:44,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:51:44,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:51:44,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:51:44,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:51:44,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:51:44,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:51:44,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:51:44,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:51:44,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:51:44,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:51:44,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:51:44,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:51:44,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:51:44,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:51:44,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:51:44,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:51:44,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:51:44,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:51:44,304 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:51:44,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:51:44,306 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:51:44,306 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:51:44,306 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:51:44,307 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:51:44,307 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:51:44,308 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:51:44,308 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:51:44,309 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:51:44,309 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:51:44,309 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:51:44,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:51:44,310 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:51:44,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:51:44,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:51:44,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:51:44,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:51:44,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:51:44,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:51:44,312 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:51:44,312 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:51:44,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:51:44,312 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:51:44,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:51:44,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:51:44,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:51:44,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:44,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:51:44,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:51:44,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:51:44,315 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:51:44,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:51:44,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:51:44,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:51:44,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:51:44,316 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_20898043-70cf-4438-9624-71f1ef2dcf21/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 [2021-11-07 01:51:44,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:51:44,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:51:44,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:51:44,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:51:44,664 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:51:44,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2021-11-07 01:51:44,737 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/data/f8d4756b3/64e02f7257814a1bb0767d4c7f1ee43a/FLAGfc1b187c9 [2021-11-07 01:51:45,439 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:51:45,440 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2021-11-07 01:51:45,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/data/f8d4756b3/64e02f7257814a1bb0767d4c7f1ee43a/FLAGfc1b187c9 [2021-11-07 01:51:45,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/data/f8d4756b3/64e02f7257814a1bb0767d4c7f1ee43a [2021-11-07 01:51:45,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:51:45,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:51:45,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:45,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:51:45,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:51:45,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:45" (1/1) ... [2021-11-07 01:51:45,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bfedd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:45, skipping insertion in model container [2021-11-07 01:51:45,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:45" (1/1) ... [2021-11-07 01:51:45,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:51:45,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:51:46,178 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_20898043-70cf-4438-9624-71f1ef2dcf21/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2021-11-07 01:51:46,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:46,476 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 01:51:46,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@88c56c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:46, skipping insertion in model container [2021-11-07 01:51:46,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:46,477 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:51:46,480 INFO L168 Benchmark]: Toolchain (without parser) took 880.92 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 46.6 MB in the beginning and 74.7 MB in the end (delta: -28.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:51:46,480 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 86.0 MB. Free memory is still 65.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:51:46,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 876.10 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 46.5 MB in the beginning and 74.7 MB in the end (delta: -28.2 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:51:46,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 86.0 MB. Free memory is still 65.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 876.10 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 46.5 MB in the beginning and 74.7 MB in the end (delta: -28.2 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3005]: 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_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/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_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/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_20898043-70cf-4438-9624-71f1ef2dcf21/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 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:51:48,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:51:48,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:51:48,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:51:48,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:51:48,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:51:48,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:51:48,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:51:48,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:51:48,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:51:48,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:51:48,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:51:48,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:51:48,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:51:48,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:51:48,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:51:48,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:51:48,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:51:48,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:51:48,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:51:48,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:51:48,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:51:48,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:51:48,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:51:48,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:51:48,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:51:48,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:51:48,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:51:48,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:51:48,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:51:48,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:51:48,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:51:48,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:51:48,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:51:48,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:51:48,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:51:48,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:51:48,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:51:48,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:51:48,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:51:48,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:51:48,897 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:51:48,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:51:48,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:51:48,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:51:48,928 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:51:48,928 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:51:48,928 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:51:48,929 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:51:48,929 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:51:48,929 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:51:48,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:51:48,932 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:51:48,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:51:48,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:51:48,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:51:48,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:51:48,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:51:48,933 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:51:48,933 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:51:48,933 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:51:48,933 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:51:48,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:51:48,934 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:51:48,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:51:48,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:51:48,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:51:48,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:51:48,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:48,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:51:48,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:51:48,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:51:48,936 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:51:48,936 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:51:48,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:51:48,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:51:48,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:51:48,937 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_20898043-70cf-4438-9624-71f1ef2dcf21/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 [2021-11-07 01:51:49,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:51:49,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:51:49,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:51:49,396 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:51:49,397 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:51:49,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2021-11-07 01:51:49,488 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/data/0be4e079d/b60ae88a175a40a29a92f269899a73ba/FLAG6763c1697 [2021-11-07 01:51:50,296 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:51:50,297 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2021-11-07 01:51:50,324 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/data/0be4e079d/b60ae88a175a40a29a92f269899a73ba/FLAG6763c1697 [2021-11-07 01:51:50,520 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/data/0be4e079d/b60ae88a175a40a29a92f269899a73ba [2021-11-07 01:51:50,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:51:50,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:51:50,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:50,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:51:50,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:51:50,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:50" (1/1) ... [2021-11-07 01:51:50,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@751bb634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:50, skipping insertion in model container [2021-11-07 01:51:50,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:50" (1/1) ... [2021-11-07 01:51:50,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:51:50,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:51:51,017 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_20898043-70cf-4438-9624-71f1ef2dcf21/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2021-11-07 01:51:51,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:51,347 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:51:51,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:51:51,441 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_20898043-70cf-4438-9624-71f1ef2dcf21/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2021-11-07 01:51:51,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:51,517 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:51:51,564 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_20898043-70cf-4438-9624-71f1ef2dcf21/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2021-11-07 01:51:51,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:51,693 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:51:51,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:51 WrapperNode [2021-11-07 01:51:51,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:51,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:51:51,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:51:51,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:51:51,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:51" (1/1) ... [2021-11-07 01:51:51,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:51" (1/1) ... [2021-11-07 01:51:52,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:51:52,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:51:52,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:51:52,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:51:52,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:51" (1/1) ... [2021-11-07 01:51:52,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:51" (1/1) ... [2021-11-07 01:51:52,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:51" (1/1) ... [2021-11-07 01:51:52,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:51" (1/1) ... [2021-11-07 01:51:52,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:51" (1/1) ... [2021-11-07 01:51:52,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:51" (1/1) ... [2021-11-07 01:51:52,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:51" (1/1) ... [2021-11-07 01:51:52,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:51:52,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:51:52,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:51:52,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:51:52,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:51" (1/1) ... [2021-11-07 01:51:52,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:52,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:51:53,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:51:53,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:51:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:51:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:51:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:51:53,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:52:09,235 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:52:09,235 INFO L299 CfgBuilder]: Removed 1227 assume(true) statements. [2021-11-07 01:52:09,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:52:09 BoogieIcfgContainer [2021-11-07 01:52:09,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:52:09,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:52:09,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:52:09,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:52:09,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:51:50" (1/3) ... [2021-11-07 01:52:09,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6828654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:52:09, skipping insertion in model container [2021-11-07 01:52:09,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:51" (2/3) ... [2021-11-07 01:52:09,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6828654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:52:09, skipping insertion in model container [2021-11-07 01:52:09,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:52:09" (3/3) ... [2021-11-07 01:52:09,252 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2021-11-07 01:52:09,257 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:52:09,257 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:52:09,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:52:09,350 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 01:52:09,351 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:52:09,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 5863 states, 5852 states have (on average 1.900205058099795) internal successors, (11120), 5862 states have internal predecessors, (11120), 0 states have call successors, (0), 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 01:52:09,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:52:09,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:09,483 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:09,484 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:52:09,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:09,490 INFO L85 PathProgramCache]: Analyzing trace with hash 658093255, now seen corresponding path program 1 times [2021-11-07 01:52:09,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:09,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306004570] [2021-11-07 01:52:09,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:09,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:09,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:09,510 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:09,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:52:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:10,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:52:10,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:10,303 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 01:52:10,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:10,460 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 01:52:10,461 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:10,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306004570] [2021-11-07 01:52:10,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306004570] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:10,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:10,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:52:10,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498436916] [2021-11-07 01:52:10,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:52:10,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:10,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:52:10,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:52:10,516 INFO L87 Difference]: Start difference. First operand has 5863 states, 5852 states have (on average 1.900205058099795) internal successors, (11120), 5862 states have internal predecessors, (11120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:13,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:13,739 INFO L93 Difference]: Finished difference Result 40663 states and 77121 transitions. [2021-11-07 01:52:13,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:52:13,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 01:52:13,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:14,040 INFO L225 Difference]: With dead ends: 40663 [2021-11-07 01:52:14,041 INFO L226 Difference]: Without dead ends: 34801 [2021-11-07 01:52:14,071 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:52:14,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34801 states. [2021-11-07 01:52:14,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34801 to 5875. [2021-11-07 01:52:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5875 states, 5865 states have (on average 1.8954816709292412) internal successors, (11117), 5874 states have internal predecessors, (11117), 0 states have call successors, (0), 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 01:52:14,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5875 states to 5875 states and 11117 transitions. [2021-11-07 01:52:14,610 INFO L78 Accepts]: Start accepts. Automaton has 5875 states and 11117 transitions. Word has length 41 [2021-11-07 01:52:14,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:14,611 INFO L470 AbstractCegarLoop]: Abstraction has 5875 states and 11117 transitions. [2021-11-07 01:52:14,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:14,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5875 states and 11117 transitions. [2021-11-07 01:52:14,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 01:52:14,615 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:14,616 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:14,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:14,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:14,838 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:52:14,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:14,841 INFO L85 PathProgramCache]: Analyzing trace with hash 694120625, now seen corresponding path program 1 times [2021-11-07 01:52:14,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:14,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96333261] [2021-11-07 01:52:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:14,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:14,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:14,846 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:14,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:52:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:15,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:52:15,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:15,454 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 01:52:15,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:15,624 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 01:52:15,625 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:15,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96333261] [2021-11-07 01:52:15,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96333261] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:15,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:15,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:52:15,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891315735] [2021-11-07 01:52:15,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:52:15,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:15,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:52:15,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:52:15,630 INFO L87 Difference]: Start difference. First operand 5875 states and 11117 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:15,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:15,863 INFO L93 Difference]: Finished difference Result 11662 states and 22077 transitions. [2021-11-07 01:52:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:52:15,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 01:52:15,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:15,881 INFO L225 Difference]: With dead ends: 11662 [2021-11-07 01:52:15,881 INFO L226 Difference]: Without dead ends: 5801 [2021-11-07 01:52:15,891 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:52:15,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2021-11-07 01:52:16,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2021-11-07 01:52:16,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5791 states have (on average 1.8948368157485753) internal successors, (10973), 5800 states have internal predecessors, (10973), 0 states have call successors, (0), 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 01:52:16,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10973 transitions. [2021-11-07 01:52:16,191 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10973 transitions. Word has length 43 [2021-11-07 01:52:16,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:16,192 INFO L470 AbstractCegarLoop]: Abstraction has 5801 states and 10973 transitions. [2021-11-07 01:52:16,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:16,193 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10973 transitions. [2021-11-07 01:52:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:52:16,198 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:16,204 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:16,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:16,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:16,422 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:52:16,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:16,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1250272945, now seen corresponding path program 1 times [2021-11-07 01:52:16,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:16,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350521633] [2021-11-07 01:52:16,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:16,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:16,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:16,437 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:16,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:52:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:16,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:52:16,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:16,964 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 01:52:16,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:17,148 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 01:52:17,148 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:17,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350521633] [2021-11-07 01:52:17,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350521633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:17,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:17,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:52:17,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742884110] [2021-11-07 01:52:17,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:52:17,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:17,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:52:17,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:52:17,151 INFO L87 Difference]: Start difference. First operand 5801 states and 10973 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:17,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:17,632 INFO L93 Difference]: Finished difference Result 11576 states and 21909 transitions. [2021-11-07 01:52:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:52:17,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 01:52:17,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:17,649 INFO L225 Difference]: With dead ends: 11576 [2021-11-07 01:52:17,649 INFO L226 Difference]: Without dead ends: 5801 [2021-11-07 01:52:17,659 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:52:17,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2021-11-07 01:52:17,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2021-11-07 01:52:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5791 states have (on average 1.8931099982731825) internal successors, (10963), 5800 states have internal predecessors, (10963), 0 states have call successors, (0), 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 01:52:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10963 transitions. [2021-11-07 01:52:17,898 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10963 transitions. Word has length 45 [2021-11-07 01:52:17,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:17,899 INFO L470 AbstractCegarLoop]: Abstraction has 5801 states and 10963 transitions. [2021-11-07 01:52:17,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:17,901 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10963 transitions. [2021-11-07 01:52:17,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:52:17,903 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:17,903 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 01:52:17,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:18,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:18,119 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:52:18,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1885582439, now seen corresponding path program 1 times [2021-11-07 01:52:18,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:18,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183588909] [2021-11-07 01:52:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:18,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:18,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:18,126 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:18,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:52:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:18,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:52:18,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:18,741 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 01:52:18,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:18,926 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 01:52:18,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:18,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183588909] [2021-11-07 01:52:18,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183588909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:18,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:18,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:52:18,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524130478] [2021-11-07 01:52:18,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:52:18,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:18,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:52:18,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:52:18,929 INFO L87 Difference]: Start difference. First operand 5801 states and 10963 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:24,634 INFO L93 Difference]: Finished difference Result 26060 states and 48831 transitions. [2021-11-07 01:52:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:52:24,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:52:24,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:24,702 INFO L225 Difference]: With dead ends: 26060 [2021-11-07 01:52:24,702 INFO L226 Difference]: Without dead ends: 20329 [2021-11-07 01:52:24,719 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:52:24,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20329 states. [2021-11-07 01:52:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20329 to 10177. [2021-11-07 01:52:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10177 states, 10167 states have (on average 1.8931838300383594) internal successors, (19248), 10176 states have internal predecessors, (19248), 0 states have call successors, (0), 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 01:52:25,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10177 states to 10177 states and 19248 transitions. [2021-11-07 01:52:25,358 INFO L78 Accepts]: Start accepts. Automaton has 10177 states and 19248 transitions. Word has length 49 [2021-11-07 01:52:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:25,358 INFO L470 AbstractCegarLoop]: Abstraction has 10177 states and 19248 transitions. [2021-11-07 01:52:25,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:25,359 INFO L276 IsEmpty]: Start isEmpty. Operand 10177 states and 19248 transitions. [2021-11-07 01:52:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:52:25,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:25,361 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:25,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:25,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:25,576 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:52:25,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:25,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2067597666, now seen corresponding path program 1 times [2021-11-07 01:52:25,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:25,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468032210] [2021-11-07 01:52:25,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:25,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:25,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:25,583 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:25,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:52:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:26,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:52:26,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:26,212 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 01:52:26,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:26,369 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 01:52:26,370 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:26,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468032210] [2021-11-07 01:52:26,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468032210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:26,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:26,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:52:26,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990468552] [2021-11-07 01:52:26,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:52:26,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:26,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:52:26,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:52:26,375 INFO L87 Difference]: Start difference. First operand 10177 states and 19248 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:30,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:30,485 INFO L93 Difference]: Finished difference Result 84402 states and 159809 transitions. [2021-11-07 01:52:30,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:52:30,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:52:30,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:30,768 INFO L225 Difference]: With dead ends: 84402 [2021-11-07 01:52:30,768 INFO L226 Difference]: Without dead ends: 74295 [2021-11-07 01:52:30,813 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:52:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74295 states. [2021-11-07 01:52:32,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74295 to 19099. [2021-11-07 01:52:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19099 states, 19089 states have (on average 1.891979674157892) internal successors, (36116), 19098 states have internal predecessors, (36116), 0 states have call successors, (0), 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 01:52:32,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19099 states to 19099 states and 36116 transitions. [2021-11-07 01:52:32,571 INFO L78 Accepts]: Start accepts. Automaton has 19099 states and 36116 transitions. Word has length 49 [2021-11-07 01:52:32,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:32,572 INFO L470 AbstractCegarLoop]: Abstraction has 19099 states and 36116 transitions. [2021-11-07 01:52:32,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:32,572 INFO L276 IsEmpty]: Start isEmpty. Operand 19099 states and 36116 transitions. [2021-11-07 01:52:32,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:52:32,575 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:32,576 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 01:52:32,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:32,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:32,793 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:52:32,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1725686366, now seen corresponding path program 1 times [2021-11-07 01:52:32,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:32,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523427838] [2021-11-07 01:52:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:32,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:32,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:32,798 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:32,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:52:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:33,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:52:33,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:33,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:33,458 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 01:52:33,458 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:33,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523427838] [2021-11-07 01:52:33,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523427838] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:33,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:33,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:52:33,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104535305] [2021-11-07 01:52:33,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:52:33,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:33,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:52:33,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:52:33,461 INFO L87 Difference]: Start difference. First operand 19099 states and 36116 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:34,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:34,955 INFO L93 Difference]: Finished difference Result 56377 states and 106634 transitions. [2021-11-07 01:52:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:52:34,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 01:52:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:35,038 INFO L225 Difference]: With dead ends: 56377 [2021-11-07 01:52:35,038 INFO L226 Difference]: Without dead ends: 37310 [2021-11-07 01:52:35,066 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:52:35,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37310 states. [2021-11-07 01:52:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37310 to 18975. [2021-11-07 01:52:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18975 states, 18965 states have (on average 1.89127339836541) internal successors, (35868), 18974 states have internal predecessors, (35868), 0 states have call successors, (0), 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 01:52:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18975 states to 18975 states and 35868 transitions. [2021-11-07 01:52:36,014 INFO L78 Accepts]: Start accepts. Automaton has 18975 states and 35868 transitions. Word has length 50 [2021-11-07 01:52:36,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:36,015 INFO L470 AbstractCegarLoop]: Abstraction has 18975 states and 35868 transitions. [2021-11-07 01:52:36,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 18975 states and 35868 transitions. [2021-11-07 01:52:36,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:52:36,017 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:36,017 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 01:52:36,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:36,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:36,239 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:52:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1748422117, now seen corresponding path program 1 times [2021-11-07 01:52:36,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:36,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761866043] [2021-11-07 01:52:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:36,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:36,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:36,242 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:36,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:52:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:36,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:52:36,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:37,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:37,194 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 01:52:37,194 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:37,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761866043] [2021-11-07 01:52:37,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761866043] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:37,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:37,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:52:37,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486373564] [2021-11-07 01:52:37,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:52:37,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:37,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:52:37,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:52:37,197 INFO L87 Difference]: Start difference. First operand 18975 states and 35868 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:49,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:49,423 INFO L93 Difference]: Finished difference Result 71712 states and 135294 transitions. [2021-11-07 01:52:49,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:52:49,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 01:52:49,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:49,592 INFO L225 Difference]: With dead ends: 71712 [2021-11-07 01:52:49,593 INFO L226 Difference]: Without dead ends: 52771 [2021-11-07 01:52:49,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:52:49,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52771 states. [2021-11-07 01:52:51,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52771 to 36741. [2021-11-07 01:52:51,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36741 states, 36731 states have (on average 1.873512836568566) internal successors, (68816), 36740 states have internal predecessors, (68816), 0 states have call successors, (0), 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 01:52:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36741 states to 36741 states and 68816 transitions. [2021-11-07 01:52:51,282 INFO L78 Accepts]: Start accepts. Automaton has 36741 states and 68816 transitions. Word has length 50 [2021-11-07 01:52:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:51,282 INFO L470 AbstractCegarLoop]: Abstraction has 36741 states and 68816 transitions. [2021-11-07 01:52:51,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:51,283 INFO L276 IsEmpty]: Start isEmpty. Operand 36741 states and 68816 transitions. [2021-11-07 01:52:51,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:52:51,284 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:51,285 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:51,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:51,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:51,500 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:52:51,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:51,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1148017788, now seen corresponding path program 1 times [2021-11-07 01:52:51,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:51,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464307007] [2021-11-07 01:52:51,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:51,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:51,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:51,504 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:51,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:52:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:51,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:52:51,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:52,098 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 01:52:52,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:52,241 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 01:52:52,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:52,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464307007] [2021-11-07 01:52:52,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464307007] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:52,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:52,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:52:52,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355677300] [2021-11-07 01:52:52,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:52:52,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:52,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:52:52,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:52:52,244 INFO L87 Difference]: Start difference. First operand 36741 states and 68816 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:56,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:56,165 INFO L93 Difference]: Finished difference Result 144013 states and 269897 transitions. [2021-11-07 01:52:56,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:52:56,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 01:52:56,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:56,378 INFO L225 Difference]: With dead ends: 144013 [2021-11-07 01:52:56,379 INFO L226 Difference]: Without dead ends: 107309 [2021-11-07 01:52:56,440 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:52:56,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107309 states. [2021-11-07 01:52:58,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107309 to 36627. [2021-11-07 01:52:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36627 states, 36617 states have (on average 1.8676024797225332) internal successors, (68386), 36626 states have internal predecessors, (68386), 0 states have call successors, (0), 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 01:52:58,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36627 states to 36627 states and 68386 transitions. [2021-11-07 01:52:58,419 INFO L78 Accepts]: Start accepts. Automaton has 36627 states and 68386 transitions. Word has length 54 [2021-11-07 01:52:58,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:58,419 INFO L470 AbstractCegarLoop]: Abstraction has 36627 states and 68386 transitions. [2021-11-07 01:52:58,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:58,419 INFO L276 IsEmpty]: Start isEmpty. Operand 36627 states and 68386 transitions. [2021-11-07 01:52:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:52:58,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:58,421 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 01:52:58,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:58,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:58,629 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:52:58,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:58,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1847353343, now seen corresponding path program 1 times [2021-11-07 01:52:58,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:58,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021178927] [2021-11-07 01:52:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:58,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:58,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:58,632 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:58,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:52:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:59,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:52:59,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:59,338 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 01:52:59,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:59,550 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 01:52:59,550 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:59,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021178927] [2021-11-07 01:52:59,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021178927] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:59,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:59,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:52:59,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549719613] [2021-11-07 01:52:59,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:52:59,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:59,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:52:59,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:52:59,553 INFO L87 Difference]: Start difference. First operand 36627 states and 68386 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:08,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:53:08,945 INFO L93 Difference]: Finished difference Result 305217 states and 572117 transitions. [2021-11-07 01:53:08,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:53:08,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 01:53:08,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:53:09,481 INFO L225 Difference]: With dead ends: 305217 [2021-11-07 01:53:09,481 INFO L226 Difference]: Without dead ends: 268646 [2021-11-07 01:53:09,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:53:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268646 states. [2021-11-07 01:53:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268646 to 70127. [2021-11-07 01:53:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70127 states, 70117 states have (on average 1.867778142247957) internal successors, (130963), 70126 states have internal predecessors, (130963), 0 states have call successors, (0), 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 01:53:13,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70127 states to 70127 states and 130963 transitions. [2021-11-07 01:53:13,397 INFO L78 Accepts]: Start accepts. Automaton has 70127 states and 130963 transitions. Word has length 55 [2021-11-07 01:53:13,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:53:13,397 INFO L470 AbstractCegarLoop]: Abstraction has 70127 states and 130963 transitions. [2021-11-07 01:53:13,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:13,397 INFO L276 IsEmpty]: Start isEmpty. Operand 70127 states and 130963 transitions. [2021-11-07 01:53:13,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:53:13,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:53:13,400 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:53:13,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:53:13,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:53:13,605 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:53:13,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:53:13,606 INFO L85 PathProgramCache]: Analyzing trace with hash -605025539, now seen corresponding path program 1 times [2021-11-07 01:53:13,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:53:13,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661254650] [2021-11-07 01:53:13,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:53:13,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:53:13,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:53:13,607 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:53:13,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20898043-70cf-4438-9624-71f1ef2dcf21/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:53:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:53:14,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:53:14,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:14,469 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 01:53:14,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:14,621 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 01:53:14,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:53:14,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661254650] [2021-11-07 01:53:14,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661254650] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:53:14,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:53:14,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:53:14,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458454766] [2021-11-07 01:53:14,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:53:14,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:53:14,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:53:14,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:53:14,624 INFO L87 Difference]: Start difference. First operand 70127 states and 130963 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)