./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH --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 d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:33:08,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:33:08,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:33:08,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:33:08,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:33:08,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:33:08,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:33:08,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:33:08,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:33:08,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:33:08,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:33:08,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:33:08,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:33:08,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:33:08,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:33:08,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:33:08,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:33:08,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:33:08,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:33:08,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:33:08,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:33:08,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:33:08,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:33:08,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:33:08,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:33:08,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:33:08,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:33:08,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:33:08,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:33:08,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:33:08,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:33:08,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:33:08,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:33:08,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:33:08,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:33:08,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:33:08,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:33:08,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:33:08,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:33:08,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:33:08,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:33:08,469 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:33:08,528 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:33:08,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:33:08,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:33:08,532 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:33:08,532 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:33:08,532 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:33:08,532 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:33:08,533 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:33:08,541 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:33:08,541 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:33:08,543 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:33:08,543 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:33:08,543 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:33:08,544 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:33:08,544 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:33:08,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:33:08,545 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:33:08,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:33:08,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:33:08,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:33:08,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:33:08,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:33:08,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:33:08,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:33:08,547 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:33:08,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:33:08,548 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:33:08,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:33:08,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:33:08,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:33:08,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:33:08,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:33:08,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:33:08,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:33:08,552 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:33:08,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:33:08,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:33:08,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:33:08,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:33:08,553 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_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c [2021-11-03 05:33:08,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:33:08,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:33:08,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:33:08,976 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:33:08,977 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:33:08,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2021-11-03 05:33:09,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/data/e8fc20198/ef46b4f5e65d496688126f944b31f685/FLAGc7165acb8 [2021-11-03 05:33:09,861 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:33:09,872 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2021-11-03 05:33:09,924 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/data/e8fc20198/ef46b4f5e65d496688126f944b31f685/FLAGc7165acb8 [2021-11-03 05:33:09,993 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/data/e8fc20198/ef46b4f5e65d496688126f944b31f685 [2021-11-03 05:33:09,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:33:10,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:33:10,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:33:10,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:33:10,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:33:10,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:33:09" (1/1) ... [2021-11-03 05:33:10,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60555c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:10, skipping insertion in model container [2021-11-03 05:33:10,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:33:09" (1/1) ... [2021-11-03 05:33:10,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:33:10,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:33:10,507 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_d9460efb-f535-452e-8fd2-812b3f9b5c5f/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c[3233,3246] [2021-11-03 05:33:11,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:33:11,048 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) [2021-11-03 05:33:11,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1d1dc7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:11, skipping insertion in model container [2021-11-03 05:33:11,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:33:11,050 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:33:11,054 INFO L168 Benchmark]: Toolchain (without parser) took 1050.44 ms. Allocated memory is still 107.0 MB. Free memory was 71.6 MB in the beginning and 65.4 MB in the end (delta: 6.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:33:11,055 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 107.0 MB. Free memory is still 61.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:33:11,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1043.97 ms. Allocated memory is still 107.0 MB. Free memory was 71.4 MB in the beginning and 65.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:33:11,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 107.0 MB. Free memory is still 61.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1043.97 ms. Allocated memory is still 107.0 MB. Free memory was 71.4 MB in the beginning and 65.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 227]: 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_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH --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 d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:33:14,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:33:14,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:33:14,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:33:14,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:33:14,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:33:14,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:33:14,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:33:14,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:33:14,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:33:14,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:33:14,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:33:14,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:33:14,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:33:14,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:33:14,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:33:14,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:33:14,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:33:14,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:33:14,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:33:14,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:33:14,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:33:14,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:33:14,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:33:14,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:33:14,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:33:14,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:33:14,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:33:14,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:33:14,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:33:14,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:33:14,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:33:14,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:33:14,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:33:14,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:33:14,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:33:14,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:33:14,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:33:14,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:33:14,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:33:14,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:33:14,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:33:14,295 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:33:14,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:33:14,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:33:14,300 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:33:14,301 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:33:14,301 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:33:14,301 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:33:14,301 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:33:14,302 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:33:14,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:33:14,306 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:33:14,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:33:14,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:33:14,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:33:14,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:33:14,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:33:14,307 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:33:14,308 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:33:14,308 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:33:14,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:33:14,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:33:14,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:33:14,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:33:14,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:33:14,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:33:14,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:33:14,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:33:14,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:33:14,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:33:14,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:33:14,312 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:33:14,312 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:33:14,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:33:14,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:33:14,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:33:14,313 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_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c [2021-11-03 05:33:14,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:33:14,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:33:14,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:33:14,886 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:33:14,887 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:33:14,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2021-11-03 05:33:15,003 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/data/d71cc7cbc/8a21e1afba1744148c693f3397463a71/FLAG012dcd18c [2021-11-03 05:33:16,033 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:33:16,034 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2021-11-03 05:33:16,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/data/d71cc7cbc/8a21e1afba1744148c693f3397463a71/FLAG012dcd18c [2021-11-03 05:33:16,133 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/data/d71cc7cbc/8a21e1afba1744148c693f3397463a71 [2021-11-03 05:33:16,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:33:16,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:33:16,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:33:16,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:33:16,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:33:16,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:33:16" (1/1) ... [2021-11-03 05:33:16,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0eeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:16, skipping insertion in model container [2021-11-03 05:33:16,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:33:16" (1/1) ... [2021-11-03 05:33:16,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:33:16,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:33:16,518 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_d9460efb-f535-452e-8fd2-812b3f9b5c5f/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c[3233,3246] [2021-11-03 05:33:17,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:33:17,042 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:33:17,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:33:17,076 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_d9460efb-f535-452e-8fd2-812b3f9b5c5f/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c[3233,3246] [2021-11-03 05:33:17,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:33:17,317 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:33:17,354 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_d9460efb-f535-452e-8fd2-812b3f9b5c5f/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c[3233,3246] [2021-11-03 05:33:17,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:33:17,592 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:33:17,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:17 WrapperNode [2021-11-03 05:33:17,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:33:17,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:33:17,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:33:17,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:33:17,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:17" (1/1) ... [2021-11-03 05:33:17,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:17" (1/1) ... [2021-11-03 05:33:19,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:33:19,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:33:19,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:33:19,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:33:19,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:17" (1/1) ... [2021-11-03 05:33:19,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:17" (1/1) ... [2021-11-03 05:33:19,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:17" (1/1) ... [2021-11-03 05:33:19,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:17" (1/1) ... [2021-11-03 05:33:20,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:17" (1/1) ... [2021-11-03 05:33:21,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:17" (1/1) ... [2021-11-03 05:33:21,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:17" (1/1) ... [2021-11-03 05:33:21,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:33:21,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:33:21,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:33:21,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:33:21,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:17" (1/1) ... [2021-11-03 05:33:21,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:33:21,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:33:21,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:33:21,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:33:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:33:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:33:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:33:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:34:06,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:34:06,474 INFO L299 CfgBuilder]: Removed 4177 assume(true) statements. [2021-11-03 05:34:06,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:34:06 BoogieIcfgContainer [2021-11-03 05:34:06,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:34:06,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:34:06,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:34:06,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:34:06,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:33:16" (1/3) ... [2021-11-03 05:34:06,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b31b4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:34:06, skipping insertion in model container [2021-11-03 05:34:06,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:33:17" (2/3) ... [2021-11-03 05:34:06,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b31b4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:34:06, skipping insertion in model container [2021-11-03 05:34:06,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:34:06" (3/3) ... [2021-11-03 05:34:06,511 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product32.cil.c [2021-11-03 05:34:06,519 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:34:06,519 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 05:34:06,660 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:34:06,668 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 [2021-11-03 05:34:06,668 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 05:34:07,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 17883 states, 17872 states have (on average 1.8861906893464637) internal successors, (33710), 17882 states have internal predecessors, (33710), 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) [2021-11-03 05:34:07,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-03 05:34:07,041 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:34:07,042 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] [2021-11-03 05:34:07,043 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)] === [2021-11-03 05:34:07,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:34:07,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1797476216, now seen corresponding path program 1 times [2021-11-03 05:34:07,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:34:07,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890378065] [2021-11-03 05:34:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:34:07,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:34:07,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:34:07,075 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:34:07,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:34:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:34:07,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:34:07,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:34:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:07,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:34:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:07,928 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:34:07,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890378065] [2021-11-03 05:34:07,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890378065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:34:07,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:34:07,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:34:07,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926538514] [2021-11-03 05:34:07,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:34:07,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:34:07,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:34:07,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:34:08,032 INFO L87 Difference]: Start difference. First operand has 17883 states, 17872 states have (on average 1.8861906893464637) internal successors, (33710), 17882 states have internal predecessors, (33710), 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 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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) [2021-11-03 05:34:16,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:34:16,561 INFO L93 Difference]: Finished difference Result 124803 states and 235251 transitions. [2021-11-03 05:34:16,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:34:16,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 30 [2021-11-03 05:34:16,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:34:17,394 INFO L225 Difference]: With dead ends: 124803 [2021-11-03 05:34:17,394 INFO L226 Difference]: Without dead ends: 106921 [2021-11-03 05:34:17,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:34:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106921 states. [2021-11-03 05:34:19,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106921 to 17895. [2021-11-03 05:34:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17895 states, 17885 states have (on average 1.8846519429689683) internal successors, (33707), 17894 states have internal predecessors, (33707), 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) [2021-11-03 05:34:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17895 states to 17895 states and 33707 transitions. [2021-11-03 05:34:19,604 INFO L78 Accepts]: Start accepts. Automaton has 17895 states and 33707 transitions. Word has length 30 [2021-11-03 05:34:19,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:34:19,605 INFO L470 AbstractCegarLoop]: Abstraction has 17895 states and 33707 transitions. [2021-11-03 05:34:19,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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) [2021-11-03 05:34:19,606 INFO L276 IsEmpty]: Start isEmpty. Operand 17895 states and 33707 transitions. [2021-11-03 05:34:19,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-03 05:34:19,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:34:19,618 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:34:19,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 05:34:19,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:34:19,840 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)] === [2021-11-03 05:34:19,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:34:19,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2118827298, now seen corresponding path program 1 times [2021-11-03 05:34:19,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:34:19,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276766947] [2021-11-03 05:34:19,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:34:19,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:34:19,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:34:19,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:34:19,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:34:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:34:20,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:34:20,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:34:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:20,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:34:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:20,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:34:20,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276766947] [2021-11-03 05:34:20,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276766947] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:34:20,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:34:20,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:34:20,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286031512] [2021-11-03 05:34:20,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:34:20,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:34:20,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:34:20,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:34:20,538 INFO L87 Difference]: Start difference. First operand 17895 states and 33707 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-11-03 05:34:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:34:21,713 INFO L93 Difference]: Finished difference Result 35702 states and 67257 transitions. [2021-11-03 05:34:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:34:21,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-11-03 05:34:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:34:21,825 INFO L225 Difference]: With dead ends: 35702 [2021-11-03 05:34:21,825 INFO L226 Difference]: Without dead ends: 17821 [2021-11-03 05:34:21,858 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:34:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17821 states. [2021-11-03 05:34:22,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17821 to 17821. [2021-11-03 05:34:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17821 states, 17811 states have (on average 1.884397282578182) internal successors, (33563), 17820 states have internal predecessors, (33563), 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) [2021-11-03 05:34:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17821 states to 17821 states and 33563 transitions. [2021-11-03 05:34:22,755 INFO L78 Accepts]: Start accepts. Automaton has 17821 states and 33563 transitions. Word has length 32 [2021-11-03 05:34:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:34:22,755 INFO L470 AbstractCegarLoop]: Abstraction has 17821 states and 33563 transitions. [2021-11-03 05:34:22,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-11-03 05:34:22,756 INFO L276 IsEmpty]: Start isEmpty. Operand 17821 states and 33563 transitions. [2021-11-03 05:34:22,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 05:34:22,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:34:22,757 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] [2021-11-03 05:34:22,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:34:22,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:34:22,966 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)] === [2021-11-03 05:34:22,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:34:22,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1349152512, now seen corresponding path program 1 times [2021-11-03 05:34:22,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:34:22,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256503259] [2021-11-03 05:34:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:34:22,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:34:22,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:34:22,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:34:22,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:34:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:34:23,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:34:23,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:34:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:23,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:34:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:23,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:34:23,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256503259] [2021-11-03 05:34:23,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256503259] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:34:23,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:34:23,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:34:23,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880467912] [2021-11-03 05:34:23,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:34:23,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:34:23,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:34:23,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:34:23,804 INFO L87 Difference]: Start difference. First operand 17821 states and 33563 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2021-11-03 05:34:25,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:34:25,405 INFO L93 Difference]: Finished difference Result 35616 states and 67089 transitions. [2021-11-03 05:34:25,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:34:25,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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 34 [2021-11-03 05:34:25,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:34:25,478 INFO L225 Difference]: With dead ends: 35616 [2021-11-03 05:34:25,478 INFO L226 Difference]: Without dead ends: 17821 [2021-11-03 05:34:25,508 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:34:25,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17821 states. [2021-11-03 05:34:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17821 to 17821. [2021-11-03 05:34:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17821 states, 17811 states have (on average 1.8838358317893438) internal successors, (33553), 17820 states have internal predecessors, (33553), 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) [2021-11-03 05:34:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17821 states to 17821 states and 33553 transitions. [2021-11-03 05:34:26,465 INFO L78 Accepts]: Start accepts. Automaton has 17821 states and 33553 transitions. Word has length 34 [2021-11-03 05:34:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:34:26,465 INFO L470 AbstractCegarLoop]: Abstraction has 17821 states and 33553 transitions. [2021-11-03 05:34:26,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2021-11-03 05:34:26,468 INFO L276 IsEmpty]: Start isEmpty. Operand 17821 states and 33553 transitions. [2021-11-03 05:34:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 05:34:26,472 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:34:26,473 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] [2021-11-03 05:34:26,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:34:26,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:34:26,689 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)] === [2021-11-03 05:34:26,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:34:26,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1005857014, now seen corresponding path program 1 times [2021-11-03 05:34:26,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:34:26,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094021186] [2021-11-03 05:34:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:34:26,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:34:26,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:34:26,693 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:34:26,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:34:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:34:27,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:34:27,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:34:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:27,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:34:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:27,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:34:27,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094021186] [2021-11-03 05:34:27,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094021186] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:34:27,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:34:27,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:34:27,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366121403] [2021-11-03 05:34:27,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:34:27,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:34:27,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:34:27,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:34:27,596 INFO L87 Difference]: Start difference. First operand 17821 states and 33553 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-11-03 05:34:39,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:34:39,404 INFO L93 Difference]: Finished difference Result 78996 states and 148341 transitions. [2021-11-03 05:34:39,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 05:34:39,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 38 [2021-11-03 05:34:39,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:34:39,795 INFO L225 Difference]: With dead ends: 78996 [2021-11-03 05:34:39,796 INFO L226 Difference]: Without dead ends: 61245 [2021-11-03 05:34:39,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-03 05:34:40,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61245 states. [2021-11-03 05:34:41,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61245 to 31764. [2021-11-03 05:34:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31764 states, 31754 states have (on average 1.8833847704226239) internal successors, (59805), 31763 states have internal predecessors, (59805), 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) [2021-11-03 05:34:42,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31764 states to 31764 states and 59805 transitions. [2021-11-03 05:34:42,179 INFO L78 Accepts]: Start accepts. Automaton has 31764 states and 59805 transitions. Word has length 38 [2021-11-03 05:34:42,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:34:42,179 INFO L470 AbstractCegarLoop]: Abstraction has 31764 states and 59805 transitions. [2021-11-03 05:34:42,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-11-03 05:34:42,180 INFO L276 IsEmpty]: Start isEmpty. Operand 31764 states and 59805 transitions. [2021-11-03 05:34:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 05:34:42,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:34:42,181 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:34:42,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:34:42,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:34:42,387 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)] === [2021-11-03 05:34:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:34:42,388 INFO L85 PathProgramCache]: Analyzing trace with hash 313143057, now seen corresponding path program 1 times [2021-11-03 05:34:42,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:34:42,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956392985] [2021-11-03 05:34:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:34:42,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:34:42,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:34:42,392 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:34:42,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:34:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:34:42,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:34:42,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:34:43,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:43,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:34:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:43,264 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:34:43,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956392985] [2021-11-03 05:34:43,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956392985] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:34:43,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:34:43,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:34:43,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373067741] [2021-11-03 05:34:43,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:34:43,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:34:43,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:34:43,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:34:43,268 INFO L87 Difference]: Start difference. First operand 31764 states and 59805 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2021-11-03 05:34:58,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:34:58,712 INFO L93 Difference]: Finished difference Result 262853 states and 494986 transitions. [2021-11-03 05:34:58,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:34:58,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2021-11-03 05:34:58,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:34:59,786 INFO L225 Difference]: With dead ends: 262853 [2021-11-03 05:34:59,786 INFO L226 Difference]: Without dead ends: 231159 [2021-11-03 05:34:59,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:35:00,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231159 states. [2021-11-03 05:35:03,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231159 to 58595. [2021-11-03 05:35:03,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58595 states, 58585 states have (on average 1.8795766834513954) internal successors, (110115), 58594 states have internal predecessors, (110115), 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) [2021-11-03 05:35:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58595 states to 58595 states and 110115 transitions. [2021-11-03 05:35:04,069 INFO L78 Accepts]: Start accepts. Automaton has 58595 states and 110115 transitions. Word has length 38 [2021-11-03 05:35:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:35:04,069 INFO L470 AbstractCegarLoop]: Abstraction has 58595 states and 110115 transitions. [2021-11-03 05:35:04,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2021-11-03 05:35:04,070 INFO L276 IsEmpty]: Start isEmpty. Operand 58595 states and 110115 transitions. [2021-11-03 05:35:04,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 05:35:04,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:35:04,071 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] [2021-11-03 05:35:04,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:35:04,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:35:04,285 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)] === [2021-11-03 05:35:04,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:35:04,285 INFO L85 PathProgramCache]: Analyzing trace with hash 989545101, now seen corresponding path program 1 times [2021-11-03 05:35:04,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:35:04,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970640898] [2021-11-03 05:35:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:35:04,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:35:04,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:35:04,291 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:35:04,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:35:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:35:04,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:35:04,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:35:05,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:35:05,312 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:35:05,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970640898] [2021-11-03 05:35:05,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970640898] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:35:05,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:35:05,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:35:05,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368561649] [2021-11-03 05:35:05,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:35:05,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:35:05,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:35:05,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:35:05,315 INFO L87 Difference]: Start difference. First operand 58595 states and 110115 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2021-11-03 05:35:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:35:10,679 INFO L93 Difference]: Finished difference Result 174305 states and 327511 transitions. [2021-11-03 05:35:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:35:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-11-03 05:35:10,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:35:11,013 INFO L225 Difference]: With dead ends: 174305 [2021-11-03 05:35:11,014 INFO L226 Difference]: Without dead ends: 115742 [2021-11-03 05:35:11,113 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:35:11,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115742 states. [2021-11-03 05:35:14,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115742 to 58471. [2021-11-03 05:35:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58471 states, 58461 states have (on average 1.8793212569063136) internal successors, (109867), 58470 states have internal predecessors, (109867), 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) [2021-11-03 05:35:14,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58471 states to 58471 states and 109867 transitions. [2021-11-03 05:35:14,549 INFO L78 Accepts]: Start accepts. Automaton has 58471 states and 109867 transitions. Word has length 39 [2021-11-03 05:35:14,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:35:14,550 INFO L470 AbstractCegarLoop]: Abstraction has 58471 states and 109867 transitions. [2021-11-03 05:35:14,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2021-11-03 05:35:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 58471 states and 109867 transitions. [2021-11-03 05:35:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 05:35:14,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:35:14,551 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] [2021-11-03 05:35:14,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:35:14,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:35:14,761 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)] === [2021-11-03 05:35:14,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:35:14,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1252778454, now seen corresponding path program 1 times [2021-11-03 05:35:14,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:35:14,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420078283] [2021-11-03 05:35:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:35:14,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:35:14,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:35:14,765 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:35:14,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9460efb-f535-452e-8fd2-812b3f9b5c5f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:35:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:35:15,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:35:15,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:35:15,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:35:15,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:35:15,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420078283] [2021-11-03 05:35:15,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420078283] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:35:15,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:35:15,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:35:15,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732513202] [2021-11-03 05:35:15,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:35:15,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:35:15,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:35:15,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:35:15,595 INFO L87 Difference]: Start difference. First operand 58471 states and 109867 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)