./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/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_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/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 64bit --witnessprinter.graph.data.programhash 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:52:03,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:52:03,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:52:03,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:52:03,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:52:03,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:52:03,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:52:03,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:52:03,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:52:03,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:52:03,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:52:03,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:52:03,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:52:03,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:52:03,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:52:03,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:52:03,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:52:03,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:52:03,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:52:03,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:52:03,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:52:03,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:52:03,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:52:03,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:52:03,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:52:03,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:52:03,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:52:03,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:52:03,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:52:03,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:52:03,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:52:03,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:52:03,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:52:03,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:52:03,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:52:03,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:52:03,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:52:03,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:52:03,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:52:03,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:52:03,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:52:03,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 03:52:03,534 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:52:03,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:52:03,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:52:03,536 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:52:03,537 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:52:03,537 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:52:03,537 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:52:03,538 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:52:03,545 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:52:03,546 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:52:03,547 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:52:03,547 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:52:03,548 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:52:03,548 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:52:03,548 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:52:03,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:52:03,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:52:03,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:52:03,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:52:03,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:52:03,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:52:03,551 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:52:03,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:52:03,552 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:52:03,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:52:03,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:52:03,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:52:03,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:52:03,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:52:03,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:52:03,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:52:03,556 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:52:03,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:52:03,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:52:03,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:52:03,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:52:03,557 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_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c [2021-11-03 03:52:03,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:52:03,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:52:03,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:52:03,974 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:52:03,975 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:52:03,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-11-03 03:52:04,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/data/3e6450df4/3804f31896454c86b3143c8f40897a95/FLAGca97d18ba [2021-11-03 03:52:05,073 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:52:05,075 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-11-03 03:52:05,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/data/3e6450df4/3804f31896454c86b3143c8f40897a95/FLAGca97d18ba [2021-11-03 03:52:05,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/data/3e6450df4/3804f31896454c86b3143c8f40897a95 [2021-11-03 03:52:05,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:52:05,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:52:05,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:05,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:52:05,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:52:05,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:05" (1/1) ... [2021-11-03 03:52:05,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e3f3ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:05, skipping insertion in model container [2021-11-03 03:52:05,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:05" (1/1) ... [2021-11-03 03:52:05,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:52:05,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:52:07,220 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_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2021-11-03 03:52:07,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:52:07,395 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 03:52:07,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@242969ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:07, skipping insertion in model container [2021-11-03 03:52:07,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:07,397 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:52:07,401 INFO L168 Benchmark]: Toolchain (without parser) took 1902.83 ms. Allocated memory was 102.8 MB in the beginning and 136.3 MB in the end (delta: 33.6 MB). Free memory was 64.7 MB in the beginning and 99.3 MB in the end (delta: -34.6 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. [2021-11-03 03:52:07,403 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 56.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:52:07,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1897.46 ms. Allocated memory was 102.8 MB in the beginning and 136.3 MB in the end (delta: 33.6 MB). Free memory was 64.4 MB in the beginning and 99.3 MB in the end (delta: -34.9 MB). Peak memory consumption was 50.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:52:07,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 56.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1897.46 ms. Allocated memory was 102.8 MB in the beginning and 136.3 MB in the end (delta: 33.6 MB). Free memory was 64.4 MB in the beginning and 99.3 MB in the end (delta: -34.9 MB). Peak memory consumption was 50.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5068]: 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_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/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_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/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 64bit --witnessprinter.graph.data.programhash 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:52:10,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:52:10,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:52:10,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:52:10,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:52:10,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:52:10,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:52:10,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:52:10,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:52:10,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:52:10,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:52:10,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:52:10,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:52:10,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:52:10,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:52:10,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:52:10,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:52:10,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:52:10,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:52:10,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:52:10,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:52:10,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:52:10,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:52:10,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:52:10,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:52:10,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:52:10,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:52:10,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:52:10,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:52:10,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:52:10,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:52:10,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:52:10,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:52:10,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:52:10,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:52:10,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:52:10,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:52:10,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:52:10,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:52:10,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:52:10,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:52:10,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 03:52:10,336 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:52:10,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:52:10,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:52:10,338 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:52:10,338 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:52:10,339 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:52:10,339 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:52:10,339 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:52:10,339 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:52:10,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:52:10,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:52:10,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:52:10,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:52:10,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:52:10,344 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:52:10,344 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:52:10,345 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:52:10,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:52:10,345 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:52:10,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:52:10,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:52:10,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:52:10,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:52:10,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:52:10,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:52:10,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:52:10,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:52:10,347 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:52:10,348 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:52:10,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:52:10,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:52:10,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:52:10,349 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_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c [2021-11-03 03:52:10,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:52:10,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:52:10,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:52:10,880 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:52:10,881 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:52:10,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-11-03 03:52:10,972 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/data/e78e5246f/449bf613f9c44ce4b22a80c7dc271054/FLAG1b5eb0c4c [2021-11-03 03:52:12,030 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:52:12,031 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-11-03 03:52:12,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/data/e78e5246f/449bf613f9c44ce4b22a80c7dc271054/FLAG1b5eb0c4c [2021-11-03 03:52:12,446 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/data/e78e5246f/449bf613f9c44ce4b22a80c7dc271054 [2021-11-03 03:52:12,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:52:12,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:52:12,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:12,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:52:12,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:52:12,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:12" (1/1) ... [2021-11-03 03:52:12,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679a4fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:12, skipping insertion in model container [2021-11-03 03:52:12,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:12" (1/1) ... [2021-11-03 03:52:12,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:52:12,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:52:14,445 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_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2021-11-03 03:52:14,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:52:14,606 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:52:14,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:52:14,918 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_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2021-11-03 03:52:14,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:52:14,964 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:52:15,286 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_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2021-11-03 03:52:15,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:52:15,910 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:52:15,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:15 WrapperNode [2021-11-03 03:52:15,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:15,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:52:15,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:52:15,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:52:15,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:15" (1/1) ... [2021-11-03 03:52:16,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:15" (1/1) ... [2021-11-03 03:52:16,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:52:16,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:52:16,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:52:16,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:52:16,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:15" (1/1) ... [2021-11-03 03:52:16,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:15" (1/1) ... [2021-11-03 03:52:16,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:15" (1/1) ... [2021-11-03 03:52:16,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:15" (1/1) ... [2021-11-03 03:52:16,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:15" (1/1) ... [2021-11-03 03:52:16,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:15" (1/1) ... [2021-11-03 03:52:16,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:15" (1/1) ... [2021-11-03 03:52:16,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:52:16,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:52:16,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:52:16,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:52:16,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:15" (1/1) ... [2021-11-03 03:52:16,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:52:16,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:52:16,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:52:16,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:52:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:52:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 03:52:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:52:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 03:52:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 03:52:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 03:52:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 03:52:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 03:52:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 03:52:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 03:52:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:52:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:52:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:52:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 03:52:16,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 03:52:16,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 03:52:16,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:52:16,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 03:52:16,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 03:52:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 03:52:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:52:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:52:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 03:52:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 03:52:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:52:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 03:52:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 03:52:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 03:52:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-03 03:52:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:52:16,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:52:17,322 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 03:52:17,389 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 03:53:18,918 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##522: assume !false; [2021-11-03 03:53:18,919 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##521: assume false; [2021-11-03 03:53:18,919 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume !false; [2021-11-03 03:53:18,919 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume false; [2021-11-03 03:53:18,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:53:18,936 INFO L299 CfgBuilder]: Removed 647 assume(true) statements. [2021-11-03 03:53:18,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:18 BoogieIcfgContainer [2021-11-03 03:53:18,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:53:18,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:53:18,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:53:18,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:53:18,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:52:12" (1/3) ... [2021-11-03 03:53:18,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586faa7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:53:18, skipping insertion in model container [2021-11-03 03:53:18,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:15" (2/3) ... [2021-11-03 03:53:18,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586faa7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:53:18, skipping insertion in model container [2021-11-03 03:53:18,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:18" (3/3) ... [2021-11-03 03:53:18,950 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-11-03 03:53:18,955 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:53:18,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-03 03:53:19,013 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:53:19,021 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 03:53:19,021 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-03 03:53:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 689 states, 674 states have (on average 1.4940652818991098) internal successors, (1007), 688 states have internal predecessors, (1007), 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 03:53:19,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 03:53:19,060 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:19,061 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:53:19,062 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 03:53:19,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:19,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1802578412, now seen corresponding path program 1 times [2021-11-03 03:53:19,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:19,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720931300] [2021-11-03 03:53:19,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:19,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:19,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:19,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:19,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:53:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:19,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:53:19,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:20,151 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 03:53:20,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:20,226 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 03:53:20,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:20,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720931300] [2021-11-03 03:53:20,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720931300] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:20,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:20,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:53:20,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656179818] [2021-11-03 03:53:20,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:53:20,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:20,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:53:20,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:53:20,264 INFO L87 Difference]: Start difference. First operand has 689 states, 674 states have (on average 1.4940652818991098) internal successors, (1007), 688 states have internal predecessors, (1007), 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 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 03:53:20,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:20,629 INFO L93 Difference]: Finished difference Result 2054 states and 3006 transitions. [2021-11-03 03:53:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:53:20,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2021-11-03 03:53:20,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:20,664 INFO L225 Difference]: With dead ends: 2054 [2021-11-03 03:53:20,665 INFO L226 Difference]: Without dead ends: 1338 [2021-11-03 03:53:20,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:53:20,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-03 03:53:20,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 672. [2021-11-03 03:53:20,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 658 states have (on average 1.2917933130699089) internal successors, (850), 671 states have internal predecessors, (850), 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 03:53:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 850 transitions. [2021-11-03 03:53:20,829 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 850 transitions. Word has length 11 [2021-11-03 03:53:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:20,829 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 850 transitions. [2021-11-03 03:53:20,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 03:53:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 850 transitions. [2021-11-03 03:53:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 03:53:20,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:20,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:53:20,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 03:53:21,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:21,046 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 03:53:21,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:21,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1859836714, now seen corresponding path program 1 times [2021-11-03 03:53:21,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:21,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568638948] [2021-11-03 03:53:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:21,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:21,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:21,054 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:21,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:53:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:21,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:53:21,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:21,863 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 03:53:21,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:21,928 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 03:53:21,928 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:21,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568638948] [2021-11-03 03:53:21,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568638948] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:21,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:21,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:53:21,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171943519] [2021-11-03 03:53:21,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:53:21,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:21,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:53:21,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:53:21,932 INFO L87 Difference]: Start difference. First operand 672 states and 850 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 03:53:22,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:22,248 INFO L93 Difference]: Finished difference Result 1975 states and 2507 transitions. [2021-11-03 03:53:22,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:53:22,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-11-03 03:53:22,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:22,260 INFO L225 Difference]: With dead ends: 1975 [2021-11-03 03:53:22,261 INFO L226 Difference]: Without dead ends: 1315 [2021-11-03 03:53:22,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 03:53:22,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-11-03 03:53:22,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1291. [2021-11-03 03:53:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1277 states have (on average 1.2889584964761158) internal successors, (1646), 1290 states have internal predecessors, (1646), 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 03:53:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1646 transitions. [2021-11-03 03:53:22,418 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1646 transitions. Word has length 11 [2021-11-03 03:53:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:22,419 INFO L470 AbstractCegarLoop]: Abstraction has 1291 states and 1646 transitions. [2021-11-03 03:53:22,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 03:53:22,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1646 transitions. [2021-11-03 03:53:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 03:53:22,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:22,421 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:53:22,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:22,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:22,639 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 03:53:22,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:22,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1820364266, now seen corresponding path program 1 times [2021-11-03 03:53:22,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:22,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330535303] [2021-11-03 03:53:22,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:22,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:22,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:22,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:22,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:53:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:23,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:53:23,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:23,484 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 03:53:23,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:23,560 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 03:53:23,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:23,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330535303] [2021-11-03 03:53:23,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330535303] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:23,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:23,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:53:23,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838357670] [2021-11-03 03:53:23,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:53:23,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:23,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:53:23,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:53:23,564 INFO L87 Difference]: Start difference. First operand 1291 states and 1646 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 03:53:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:23,657 INFO L93 Difference]: Finished difference Result 1291 states and 1646 transitions. [2021-11-03 03:53:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:53:23,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-03 03:53:23,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:23,666 INFO L225 Difference]: With dead ends: 1291 [2021-11-03 03:53:23,666 INFO L226 Difference]: Without dead ends: 1286 [2021-11-03 03:53:23,667 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 03:53:23,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-11-03 03:53:23,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1283. [2021-11-03 03:53:23,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1270 states have (on average 1.2858267716535432) internal successors, (1633), 1282 states have internal predecessors, (1633), 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 03:53:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1633 transitions. [2021-11-03 03:53:23,775 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1633 transitions. Word has length 12 [2021-11-03 03:53:23,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:23,775 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1633 transitions. [2021-11-03 03:53:23,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 03:53:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1633 transitions. [2021-11-03 03:53:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-03 03:53:23,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:23,778 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] [2021-11-03 03:53:23,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:23,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:23,994 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 03:53:23,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:23,995 INFO L85 PathProgramCache]: Analyzing trace with hash -965110428, now seen corresponding path program 1 times [2021-11-03 03:53:23,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:23,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571855503] [2021-11-03 03:53:23,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:23,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:23,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:23,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:24,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:53:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:24,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:53:24,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:24,990 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 03:53:24,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:25,172 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 03:53:25,172 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:25,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571855503] [2021-11-03 03:53:25,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571855503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:25,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:25,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:53:25,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558463487] [2021-11-03 03:53:25,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:53:25,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:25,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:53:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:53:25,175 INFO L87 Difference]: Start difference. First operand 1283 states and 1633 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:53:25,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:25,488 INFO L93 Difference]: Finished difference Result 3681 states and 4764 transitions. [2021-11-03 03:53:25,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:53:25,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-03 03:53:25,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:25,503 INFO L225 Difference]: With dead ends: 3681 [2021-11-03 03:53:25,504 INFO L226 Difference]: Without dead ends: 2406 [2021-11-03 03:53:25,507 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:53:25,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2021-11-03 03:53:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 2398. [2021-11-03 03:53:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2385 states have (on average 1.310691823899371) internal successors, (3126), 2397 states have internal predecessors, (3126), 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 03:53:25,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3126 transitions. [2021-11-03 03:53:25,718 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3126 transitions. Word has length 35 [2021-11-03 03:53:25,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:25,719 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 3126 transitions. [2021-11-03 03:53:25,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:53:25,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3126 transitions. [2021-11-03 03:53:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 03:53:25,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:25,736 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 03:53:25,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:25,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:25,950 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 03:53:25,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:25,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2056089327, now seen corresponding path program 1 times [2021-11-03 03:53:25,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:25,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547788509] [2021-11-03 03:53:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:25,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:25,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:25,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:25,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:53:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:26,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:53:26,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:53:27,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:53:27,246 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:27,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547788509] [2021-11-03 03:53:27,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547788509] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:27,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:27,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:53:27,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991198337] [2021-11-03 03:53:27,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:53:27,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:27,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:53:27,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:53:27,249 INFO L87 Difference]: Start difference. First operand 2398 states and 3126 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:53:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:29,774 INFO L93 Difference]: Finished difference Result 4807 states and 6261 transitions. [2021-11-03 03:53:29,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:53:29,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-03 03:53:29,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:29,793 INFO L225 Difference]: With dead ends: 4807 [2021-11-03 03:53:29,793 INFO L226 Difference]: Without dead ends: 2410 [2021-11-03 03:53:29,798 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:53:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2021-11-03 03:53:29,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 2396. [2021-11-03 03:53:29,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 2383 states have (on average 1.3092740243390684) internal successors, (3120), 2395 states have internal predecessors, (3120), 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 03:53:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3120 transitions. [2021-11-03 03:53:29,963 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3120 transitions. Word has length 53 [2021-11-03 03:53:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:29,964 INFO L470 AbstractCegarLoop]: Abstraction has 2396 states and 3120 transitions. [2021-11-03 03:53:29,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:53:29,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3120 transitions. [2021-11-03 03:53:29,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 03:53:29,966 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:29,967 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:53:30,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:30,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:30,190 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 03:53:30,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:30,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1050619864, now seen corresponding path program 1 times [2021-11-03 03:53:30,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:30,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220955408] [2021-11-03 03:53:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:30,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:30,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:30,197 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:30,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:53:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:31,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:53:31,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:31,554 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 03:53:31,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:31,865 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 03:53:31,865 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:31,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220955408] [2021-11-03 03:53:31,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220955408] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:31,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:31,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:53:31,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858295256] [2021-11-03 03:53:31,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:53:31,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:53:31,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:53:31,868 INFO L87 Difference]: Start difference. First operand 2396 states and 3120 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 03:53:32,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:32,853 INFO L93 Difference]: Finished difference Result 7138 states and 9294 transitions. [2021-11-03 03:53:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:53:32,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 78 [2021-11-03 03:53:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:32,882 INFO L225 Difference]: With dead ends: 7138 [2021-11-03 03:53:32,882 INFO L226 Difference]: Without dead ends: 4748 [2021-11-03 03:53:32,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:53:32,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4748 states. [2021-11-03 03:53:33,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4748 to 2399. [2021-11-03 03:53:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2386 states have (on average 1.308466051969824) internal successors, (3122), 2398 states have internal predecessors, (3122), 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 03:53:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3122 transitions. [2021-11-03 03:53:33,151 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3122 transitions. Word has length 78 [2021-11-03 03:53:33,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:33,153 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3122 transitions. [2021-11-03 03:53:33,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 03:53:33,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3122 transitions. [2021-11-03 03:53:33,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 03:53:33,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:33,156 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:53:33,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:33,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:33,370 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 03:53:33,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:33,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1494520538, now seen corresponding path program 1 times [2021-11-03 03:53:33,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:33,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172706699] [2021-11-03 03:53:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:33,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:33,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:33,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:33,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:53:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:34,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:53:34,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:34,649 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 03:53:34,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:34,879 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 03:53:34,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:34,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172706699] [2021-11-03 03:53:34,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172706699] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:34,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:34,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:53:34,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049099590] [2021-11-03 03:53:34,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:53:34,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:34,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:53:34,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:53:34,886 INFO L87 Difference]: Start difference. First operand 2399 states and 3122 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 03:53:35,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:35,962 INFO L93 Difference]: Finished difference Result 6982 states and 9092 transitions. [2021-11-03 03:53:35,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:53:35,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 78 [2021-11-03 03:53:35,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:35,990 INFO L225 Difference]: With dead ends: 6982 [2021-11-03 03:53:35,990 INFO L226 Difference]: Without dead ends: 4592 [2021-11-03 03:53:35,995 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:53:36,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4592 states. [2021-11-03 03:53:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4592 to 2411. [2021-11-03 03:53:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 2398 states have (on average 1.3069224353628024) internal successors, (3134), 2410 states have internal predecessors, (3134), 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 03:53:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3134 transitions. [2021-11-03 03:53:36,263 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3134 transitions. Word has length 78 [2021-11-03 03:53:36,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:36,265 INFO L470 AbstractCegarLoop]: Abstraction has 2411 states and 3134 transitions. [2021-11-03 03:53:36,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 03:53:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3134 transitions. [2021-11-03 03:53:36,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 03:53:36,267 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:36,267 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:53:36,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:36,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:36,481 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 03:53:36,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1517152792, now seen corresponding path program 1 times [2021-11-03 03:53:36,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:36,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231739793] [2021-11-03 03:53:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:36,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:36,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:36,484 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:36,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:53:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:37,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 03:53:37,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:37,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-03 03:53:37,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-03 03:53:37,846 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 03:53:37,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:38,187 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 03:53:38,188 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:38,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231739793] [2021-11-03 03:53:38,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231739793] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:38,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:38,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:53:38,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603620292] [2021-11-03 03:53:38,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:53:38,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:38,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:53:38,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:53:38,192 INFO L87 Difference]: Start difference. First operand 2411 states and 3134 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:25,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:25,340 INFO L93 Difference]: Finished difference Result 4732 states and 6161 transitions. [2021-11-03 03:56:25,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:56:25,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-03 03:56:25,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:25,371 INFO L225 Difference]: With dead ends: 4732 [2021-11-03 03:56:25,372 INFO L226 Difference]: Without dead ends: 4670 [2021-11-03 03:56:25,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:56:25,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2021-11-03 03:56:25,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 2411. [2021-11-03 03:56:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 2398 states have (on average 1.3060884070058383) internal successors, (3132), 2410 states have internal predecessors, (3132), 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 03:56:25,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3132 transitions. [2021-11-03 03:56:25,666 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3132 transitions. Word has length 78 [2021-11-03 03:56:25,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:25,667 INFO L470 AbstractCegarLoop]: Abstraction has 2411 states and 3132 transitions. [2021-11-03 03:56:25,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:25,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3132 transitions. [2021-11-03 03:56:25,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 03:56:25,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:25,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:56:25,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:56:25,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:56:25,886 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 03:56:25,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:25,886 INFO L85 PathProgramCache]: Analyzing trace with hash 948357624, now seen corresponding path program 1 times [2021-11-03 03:56:25,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:56:25,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200343756] [2021-11-03 03:56:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:25,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:56:25,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:56:25,889 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:56:25,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:56:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:26,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:56:26,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:27,419 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 03:56:27,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:27,995 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 03:56:27,995 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:56:27,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200343756] [2021-11-03 03:56:27,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200343756] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:27,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:27,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 03:56:27,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483436698] [2021-11-03 03:56:27,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:56:27,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:56:27,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:56:27,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:56:27,998 INFO L87 Difference]: Start difference. First operand 2411 states and 3132 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 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 03:56:33,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:33,441 INFO L93 Difference]: Finished difference Result 9667 states and 12640 transitions. [2021-11-03 03:56:33,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:56:33,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 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 79 [2021-11-03 03:56:33,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:33,482 INFO L225 Difference]: With dead ends: 9667 [2021-11-03 03:56:33,483 INFO L226 Difference]: Without dead ends: 8419 [2021-11-03 03:56:33,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:56:33,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8419 states. [2021-11-03 03:56:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8419 to 7045. [2021-11-03 03:56:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7045 states, 7032 states have (on average 1.3111490329920363) internal successors, (9220), 7044 states have internal predecessors, (9220), 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 03:56:34,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 9220 transitions. [2021-11-03 03:56:34,372 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 9220 transitions. Word has length 79 [2021-11-03 03:56:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:34,373 INFO L470 AbstractCegarLoop]: Abstraction has 7045 states and 9220 transitions. [2021-11-03 03:56:34,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 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 03:56:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 9220 transitions. [2021-11-03 03:56:34,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 03:56:34,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:34,381 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:56:34,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-03 03:56:34,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:56:34,597 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 03:56:34,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:34,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1167030794, now seen corresponding path program 1 times [2021-11-03 03:56:34,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:56:34,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274579277] [2021-11-03 03:56:34,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:34,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:56:34,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:56:34,600 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:56:34,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:56:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:35,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:56:35,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:35,920 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 03:56:35,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:36,170 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 03:56:36,170 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:56:36,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274579277] [2021-11-03 03:56:36,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274579277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:36,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:36,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:56:36,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768755808] [2021-11-03 03:56:36,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:56:36,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:56:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:56:36,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:56:36,173 INFO L87 Difference]: Start difference. First operand 7045 states and 9220 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 03:56:38,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:38,031 INFO L93 Difference]: Finished difference Result 23094 states and 30270 transitions. [2021-11-03 03:56:38,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:56:38,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 79 [2021-11-03 03:56:38,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:38,075 INFO L225 Difference]: With dead ends: 23094 [2021-11-03 03:56:38,075 INFO L226 Difference]: Without dead ends: 16058 [2021-11-03 03:56:38,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:38,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16058 states. [2021-11-03 03:56:39,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16058 to 7045. [2021-11-03 03:56:39,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7045 states, 7032 states have (on average 1.30773606370876) internal successors, (9196), 7044 states have internal predecessors, (9196), 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 03:56:39,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 9196 transitions. [2021-11-03 03:56:39,101 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 9196 transitions. Word has length 79 [2021-11-03 03:56:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:39,101 INFO L470 AbstractCegarLoop]: Abstraction has 7045 states and 9196 transitions. [2021-11-03 03:56:39,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 03:56:39,101 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 9196 transitions. [2021-11-03 03:56:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 03:56:39,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:39,102 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:56:39,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:56:39,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:56:39,306 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 03:56:39,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:39,306 INFO L85 PathProgramCache]: Analyzing trace with hash -648257224, now seen corresponding path program 1 times [2021-11-03 03:56:39,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:56:39,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873316146] [2021-11-03 03:56:39,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:39,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:56:39,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:56:39,308 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:56:39,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:56:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:40,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:56:40,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:40,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:41,543 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 03:56:41,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:56:41,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873316146] [2021-11-03 03:56:41,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873316146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:41,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:41,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-03 03:56:41,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743535847] [2021-11-03 03:56:41,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:56:41,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:56:41,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:56:41,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:56:41,546 INFO L87 Difference]: Start difference. First operand 7045 states and 9196 transitions. Second operand has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 11 states have internal predecessors, (157), 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 03:56:51,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:51,965 INFO L93 Difference]: Finished difference Result 36777 states and 48158 transitions. [2021-11-03 03:56:51,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 03:56:51,966 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 11 states have internal predecessors, (157), 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 79 [2021-11-03 03:56:51,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:52,047 INFO L225 Difference]: With dead ends: 36777 [2021-11-03 03:56:52,047 INFO L226 Difference]: Without dead ends: 33220 [2021-11-03 03:56:52,061 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2021-11-03 03:56:52,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33220 states. [2021-11-03 03:56:53,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33220 to 17401. [2021-11-03 03:56:53,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17401 states, 17388 states have (on average 1.3103289625028756) internal successors, (22784), 17400 states have internal predecessors, (22784), 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 03:56:54,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17401 states to 17401 states and 22784 transitions. [2021-11-03 03:56:54,011 INFO L78 Accepts]: Start accepts. Automaton has 17401 states and 22784 transitions. Word has length 79 [2021-11-03 03:56:54,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:54,012 INFO L470 AbstractCegarLoop]: Abstraction has 17401 states and 22784 transitions. [2021-11-03 03:56:54,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 11 states have internal predecessors, (157), 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 03:56:54,012 INFO L276 IsEmpty]: Start isEmpty. Operand 17401 states and 22784 transitions. [2021-11-03 03:56:54,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 03:56:54,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:54,014 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:56:54,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:56:54,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:56:54,222 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 03:56:54,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:54,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1804226248, now seen corresponding path program 1 times [2021-11-03 03:56:54,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:56:54,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045816345] [2021-11-03 03:56:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:54,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:56:54,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:56:54,225 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:56:54,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 03:56:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:58,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 03:56:58,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:58,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 03:56:58,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 03:56:59,208 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:56:59,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:56:59,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:59,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:56:59,414 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:56:59,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:56:59,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:59,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:56:59,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-11-03 03:56:59,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-11-03 03:56:59,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 47 [2021-11-03 03:56:59,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2021-11-03 03:56:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:59,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:57:00,371 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 03:57:00,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:57:00,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045816345] [2021-11-03 03:57:00,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045816345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:00,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:00,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:57:00,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286315823] [2021-11-03 03:57:00,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:57:00,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:57:00,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:57:00,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:57:00,373 INFO L87 Difference]: Start difference. First operand 17401 states and 22784 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 03:58:48,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:48,736 INFO L93 Difference]: Finished difference Result 43355 states and 56710 transitions. [2021-11-03 03:58:48,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:58:48,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 79 [2021-11-03 03:58:48,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:48,796 INFO L225 Difference]: With dead ends: 43355 [2021-11-03 03:58:48,796 INFO L226 Difference]: Without dead ends: 25443 [2021-11-03 03:58:48,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:48,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25443 states. [2021-11-03 03:58:50,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25443 to 11503. [2021-11-03 03:58:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11503 states, 11490 states have (on average 1.306875543951262) internal successors, (15016), 11502 states have internal predecessors, (15016), 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 03:58:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11503 states to 11503 states and 15016 transitions. [2021-11-03 03:58:50,570 INFO L78 Accepts]: Start accepts. Automaton has 11503 states and 15016 transitions. Word has length 79 [2021-11-03 03:58:50,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:50,571 INFO L470 AbstractCegarLoop]: Abstraction has 11503 states and 15016 transitions. [2021-11-03 03:58:50,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 03:58:50,572 INFO L276 IsEmpty]: Start isEmpty. Operand 11503 states and 15016 transitions. [2021-11-03 03:58:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 03:58:50,574 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:50,574 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:58:50,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 03:58:50,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:58:50,782 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 03:58:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:50,782 INFO L85 PathProgramCache]: Analyzing trace with hash 559162765, now seen corresponding path program 1 times [2021-11-03 03:58:50,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:58:50,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883652716] [2021-11-03 03:58:50,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:50,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:58:50,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:58:50,785 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:58:50,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 03:58:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:52,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 03:58:52,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:58:52,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-03 03:58:52,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-03 03:58:52,566 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 03:58:52,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:58:53,011 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 03:58:53,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:58:53,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883652716] [2021-11-03 03:58:53,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883652716] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:53,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:53,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:58:53,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314522670] [2021-11-03 03:58:53,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:53,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:58:53,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:53,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:53,015 INFO L87 Difference]: Start difference. First operand 11503 states and 15016 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 04:02:26,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:02:26,912 INFO L93 Difference]: Finished difference Result 22633 states and 29572 transitions. [2021-11-03 04:02:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:02:26,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 85 [2021-11-03 04:02:26,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:02:26,962 INFO L225 Difference]: With dead ends: 22633 [2021-11-03 04:02:26,963 INFO L226 Difference]: Without dead ends: 22486 [2021-11-03 04:02:26,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:02:26,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22486 states. [2021-11-03 04:02:28,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22486 to 11508. [2021-11-03 04:02:28,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11508 states, 11495 states have (on average 1.3059591126576773) internal successors, (15012), 11507 states have internal predecessors, (15012), 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 04:02:28,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11508 states to 11508 states and 15012 transitions. [2021-11-03 04:02:28,440 INFO L78 Accepts]: Start accepts. Automaton has 11508 states and 15012 transitions. Word has length 85 [2021-11-03 04:02:28,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:28,440 INFO L470 AbstractCegarLoop]: Abstraction has 11508 states and 15012 transitions. [2021-11-03 04:02:28,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 04:02:28,440 INFO L276 IsEmpty]: Start isEmpty. Operand 11508 states and 15012 transitions. [2021-11-03 04:02:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 04:02:28,442 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:28,443 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:02:28,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 04:02:28,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:02:28,657 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 04:02:28,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:28,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1810418226, now seen corresponding path program 1 times [2021-11-03 04:02:28,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:28,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300666023] [2021-11-03 04:02:28,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:28,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:28,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:28,660 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:28,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:02:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:32,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:02:32,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:32,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 04:02:32,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 04:02:32,349 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:02:32,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 04:02:32,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:32,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 04:02:32,505 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:02:32,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 04:02:32,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:32,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 04:02:32,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-03 04:02:32,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-03 04:02:32,618 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 04:02:32,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:33,020 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 04:02:33,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:33,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300666023] [2021-11-03 04:02:33,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300666023] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:02:33,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:02:33,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:02:33,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52275787] [2021-11-03 04:02:33,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:02:33,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:02:33,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:02:33,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:02:33,022 INFO L87 Difference]: Start difference. First operand 11508 states and 15012 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 04:04:17,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:04:17,907 INFO L93 Difference]: Finished difference Result 31957 states and 41687 transitions. [2021-11-03 04:04:17,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:04:17,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 86 [2021-11-03 04:04:17,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:04:17,938 INFO L225 Difference]: With dead ends: 31957 [2021-11-03 04:04:17,938 INFO L226 Difference]: Without dead ends: 20223 [2021-11-03 04:04:17,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:04:17,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20223 states. [2021-11-03 04:04:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20223 to 10694. [2021-11-03 04:04:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10694 states, 10681 states have (on average 1.3048403707518024) internal successors, (13937), 10693 states have internal predecessors, (13937), 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 04:04:19,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10694 states to 10694 states and 13937 transitions. [2021-11-03 04:04:19,498 INFO L78 Accepts]: Start accepts. Automaton has 10694 states and 13937 transitions. Word has length 86 [2021-11-03 04:04:19,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:04:19,499 INFO L470 AbstractCegarLoop]: Abstraction has 10694 states and 13937 transitions. [2021-11-03 04:04:19,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 04:04:19,499 INFO L276 IsEmpty]: Start isEmpty. Operand 10694 states and 13937 transitions. [2021-11-03 04:04:19,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 04:04:19,501 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:04:19,501 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:04:19,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:04:19,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:04:19,718 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 04:04:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:04:19,718 INFO L85 PathProgramCache]: Analyzing trace with hash -642776665, now seen corresponding path program 1 times [2021-11-03 04:04:19,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:04:19,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086821033] [2021-11-03 04:04:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:04:19,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:04:19,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:04:19,720 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:04:19,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a602b6fd-2f7f-4e9e-b67e-cb7602f7ef58/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:04:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:04:21,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:04:21,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:04:21,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-03 04:04:21,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-03 04:04:21,558 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 04:04:21,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:04:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:04:22,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:04:22,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086821033] [2021-11-03 04:04:22,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086821033] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:04:22,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:04:22,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:04:22,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066555829] [2021-11-03 04:04:22,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:04:22,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:04:22,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:04:22,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:04:22,028 INFO L87 Difference]: Start difference. First operand 10694 states and 13937 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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)