./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs --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 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:19:51,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:19:51,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:19:52,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:19:52,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:19:52,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:19:52,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:19:52,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:19:52,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:19:52,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:19:52,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:19:52,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:19:52,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:19:52,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:19:52,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:19:52,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:19:52,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:19:52,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:19:52,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:19:52,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:19:52,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:19:52,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:19:52,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:19:52,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:19:52,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:19:52,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:19:52,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:19:52,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:19:52,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:19:52,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:19:52,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:19:52,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:19:52,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:19:52,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:19:52,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:19:52,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:19:52,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:19:52,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:19:52,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:19:52,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:19:52,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:19:52,129 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:19:52,180 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:19:52,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:19:52,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:19:52,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:19:52,185 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:19:52,185 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:19:52,185 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:19:52,186 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:19:52,193 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:19:52,193 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:19:52,195 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:19:52,195 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:19:52,195 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:19:52,196 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:19:52,196 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:19:52,196 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:19:52,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:19:52,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:19:52,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:19:52,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:19:52,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:19:52,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:19:52,199 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:19:52,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:19:52,199 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:19:52,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:19:52,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:19:52,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:19:52,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:19:52,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:19:52,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:19:52,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:19:52,201 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:19:52,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:19:52,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:19:52,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:19:52,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:19:52,203 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_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-11-19 13:19:52,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:19:52,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:19:52,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:19:52,546 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:19:52,547 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:19:52,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-19 13:19:52,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/data/5b63f26b5/695dd39285b846728324d0db4b50ea84/FLAGd2e1a9664 [2021-11-19 13:19:53,508 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:19:53,510 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-19 13:19:53,566 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/data/5b63f26b5/695dd39285b846728324d0db4b50ea84/FLAGd2e1a9664 [2021-11-19 13:19:53,990 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/data/5b63f26b5/695dd39285b846728324d0db4b50ea84 [2021-11-19 13:19:53,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:19:53,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:19:53,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:54,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:19:54,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:19:54,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:53" (1/1) ... [2021-11-19 13:19:54,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd3489e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:54, skipping insertion in model container [2021-11-19 13:19:54,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:53" (1/1) ... [2021-11-19 13:19:54,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:19:54,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:19:55,579 WARN L230 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_7306c1c8-26ee-4393-960d-bb80d65aa90f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-19 13:19:55,628 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:55,749 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) [2021-11-19 13:19:55,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@18e676aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:55, skipping insertion in model container [2021-11-19 13:19:55,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:55,750 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:19:55,754 INFO L158 Benchmark]: Toolchain (without parser) took 1755.49ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 82.3MB in the beginning and 113.4MB in the end (delta: -31.1MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2021-11-19 13:19:55,761 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 107.7MB in the beginning and 107.6MB in the end (delta: 93.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:19:55,764 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1750.90ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 82.0MB in the beginning and 113.4MB in the end (delta: -31.4MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2021-11-19 13:19:55,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 107.7MB in the beginning and 107.6MB in the end (delta: 93.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1750.90ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 82.0MB in the beginning and 113.4MB in the end (delta: -31.4MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5135]: 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_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs --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 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:19:58,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:19:58,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:19:58,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:19:58,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:19:58,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:19:58,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:19:58,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:19:58,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:19:58,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:19:58,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:19:58,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:19:58,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:19:58,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:19:58,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:19:58,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:19:58,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:19:58,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:19:58,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:19:58,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:19:58,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:19:58,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:19:58,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:19:58,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:19:58,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:19:58,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:19:58,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:19:58,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:19:58,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:19:58,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:19:58,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:19:58,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:19:58,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:19:58,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:19:58,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:19:58,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:19:58,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:19:58,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:19:58,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:19:58,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:19:58,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:19:58,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:19:58,419 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:19:58,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:19:58,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:19:58,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:19:58,424 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:19:58,424 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:19:58,424 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:19:58,425 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:19:58,425 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:19:58,425 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:19:58,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:19:58,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:19:58,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:19:58,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:19:58,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:19:58,429 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:19:58,429 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:19:58,429 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:19:58,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:19:58,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:19:58,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:19:58,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:19:58,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:19:58,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:19:58,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:19:58,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:19:58,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:19:58,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:19:58,432 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:19:58,432 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:19:58,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:19:58,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:19:58,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:19:58,433 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_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-11-19 13:19:58,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:19:58,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:19:58,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:19:58,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:19:58,907 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:19:58,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-19 13:19:58,991 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/data/978b14d3c/c4549ca2916f43cfb1c87191e176a17c/FLAG8c758de99 [2021-11-19 13:20:00,008 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:20:00,009 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-19 13:20:00,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/data/978b14d3c/c4549ca2916f43cfb1c87191e176a17c/FLAG8c758de99 [2021-11-19 13:20:00,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/data/978b14d3c/c4549ca2916f43cfb1c87191e176a17c [2021-11-19 13:20:00,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:20:00,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:20:00,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:20:00,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:20:00,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:20:00,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:20:00" (1/1) ... [2021-11-19 13:20:00,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9044ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:00, skipping insertion in model container [2021-11-19 13:20:00,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:20:00" (1/1) ... [2021-11-19 13:20:00,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:20:00,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:20:02,240 WARN L230 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_7306c1c8-26ee-4393-960d-bb80d65aa90f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-19 13:20:02,284 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:20:02,353 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:20:02,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:20:02,642 WARN L230 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_7306c1c8-26ee-4393-960d-bb80d65aa90f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-19 13:20:02,652 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:20:02,672 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:20:02,962 WARN L230 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_7306c1c8-26ee-4393-960d-bb80d65aa90f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-19 13:20:02,969 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:20:03,193 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:20:03,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:03 WrapperNode [2021-11-19 13:20:03,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:20:03,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:20:03,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:20:03,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:20:03,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:03" (1/1) ... [2021-11-19 13:20:03,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:03" (1/1) ... [2021-11-19 13:20:03,335 INFO L137 Inliner]: procedures = 148, calls = 733, calls flagged for inlining = 54, calls inlined = 44, statements flattened = 1336 [2021-11-19 13:20:03,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:20:03,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:20:03,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:20:03,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:20:03,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:03" (1/1) ... [2021-11-19 13:20:03,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:03" (1/1) ... [2021-11-19 13:20:03,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:03" (1/1) ... [2021-11-19 13:20:03,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:03" (1/1) ... [2021-11-19 13:20:03,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:03" (1/1) ... [2021-11-19 13:20:03,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:03" (1/1) ... [2021-11-19 13:20:03,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:03" (1/1) ... [2021-11-19 13:20:03,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:20:03,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:20:03,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:20:03,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:20:03,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:03" (1/1) ... [2021-11-19 13:20:03,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:20:03,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:20:03,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:20:03,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:20:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-19 13:20:03,601 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-19 13:20:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:20:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_init [2021-11-19 13:20:03,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_init [2021-11-19 13:20:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-19 13:20:03,603 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-19 13:20:03,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:20:03,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:20:03,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 13:20:03,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 13:20:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 13:20:03,604 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 13:20:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2021-11-19 13:20:03,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2021-11-19 13:20:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-19 13:20:03,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-19 13:20:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 13:20:03,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 13:20:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_exit [2021-11-19 13:20:03,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_exit [2021-11-19 13:20:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2021-11-19 13:20:03,606 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2021-11-19 13:20:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 13:20:03,607 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 13:20:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2021-11-19 13:20:03,607 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2021-11-19 13:20:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-19 13:20:03,608 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-19 13:20:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-11-19 13:20:03,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-11-19 13:20:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 13:20:03,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 13:20:03,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 13:20:03,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 13:20:03,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-19 13:20:03,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-19 13:20:03,610 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 13:20:03,610 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 13:20:03,610 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2021-11-19 13:20:03,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2021-11-19 13:20:03,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:20:03,611 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2021-11-19 13:20:03,611 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2021-11-19 13:20:03,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:20:03,612 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 13:20:03,612 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 13:20:03,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:20:03,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:20:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 13:20:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2021-11-19 13:20:03,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2021-11-19 13:20:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 13:20:03,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 13:20:03,614 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-11-19 13:20:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-11-19 13:20:03,614 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-11-19 13:20:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-11-19 13:20:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:20:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-19 13:20:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-19 13:20:03,616 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-19 13:20:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-19 13:20:03,616 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2021-11-19 13:20:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2021-11-19 13:20:03,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:20:03,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:20:03,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-11-19 13:20:03,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-11-19 13:20:03,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:20:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:20:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:20:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 13:20:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:20:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:20:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 13:20:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-19 13:20:03,619 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-19 13:20:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-19 13:20:03,620 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-19 13:20:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 13:20:03,620 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 13:20:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2021-11-19 13:20:03,620 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2021-11-19 13:20:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-19 13:20:03,621 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-19 13:20:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 13:20:03,621 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 13:20:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-11-19 13:20:03,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-11-19 13:20:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-11-19 13:20:03,622 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-11-19 13:20:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 13:20:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-11-19 13:20:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-11-19 13:20:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-19 13:20:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-19 13:20:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:20:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:20:04,179 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:20:04,183 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:20:06,694 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-11-19 13:20:08,979 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 13:20:19,712 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2021-11-19 13:20:19,712 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2021-11-19 13:20:19,827 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:20:19,842 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:20:19,843 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-19 13:20:19,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:20:19 BoogieIcfgContainer [2021-11-19 13:20:19,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:20:19,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:20:19,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:20:19,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:20:19,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:20:00" (1/3) ... [2021-11-19 13:20:19,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1571d530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:20:19, skipping insertion in model container [2021-11-19 13:20:19,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:03" (2/3) ... [2021-11-19 13:20:19,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1571d530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:20:19, skipping insertion in model container [2021-11-19 13:20:19,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:20:19" (3/3) ... [2021-11-19 13:20:19,866 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-19 13:20:19,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:20:19,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:20:19,965 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:20:19,976 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 [2021-11-19 13:20:19,976 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:20:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 431 states, 304 states have (on average 1.3519736842105263) internal successors, (411), 316 states have internal predecessors, (411), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2021-11-19 13:20:20,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 13:20:20,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:20,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:20:20,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:20,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:20,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1517292025, now seen corresponding path program 1 times [2021-11-19 13:20:20,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:20,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162832253] [2021-11-19 13:20:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:20,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:20,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:20,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:20,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:20:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:20,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:20:20,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:20,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:21,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:21,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162832253] [2021-11-19 13:20:21,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162832253] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:21,048 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:21,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-19 13:20:21,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402981204] [2021-11-19 13:20:21,051 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:21,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:20:21,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:21,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:20:21,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:20:21,095 INFO L87 Difference]: Start difference. First operand has 431 states, 304 states have (on average 1.3519736842105263) internal successors, (411), 316 states have internal predecessors, (411), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:20:21,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:21,313 INFO L93 Difference]: Finished difference Result 1253 states and 1768 transitions. [2021-11-19 13:20:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:20:21,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-19 13:20:21,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:21,340 INFO L225 Difference]: With dead ends: 1253 [2021-11-19 13:20:21,341 INFO L226 Difference]: Without dead ends: 824 [2021-11-19 13:20:21,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:20:21,354 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 539 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:21,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 1229 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:20:21,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2021-11-19 13:20:21,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 820. [2021-11-19 13:20:21,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 581 states have (on average 1.2581755593803787) internal successors, (731), 593 states have internal predecessors, (731), 173 states have call successors, (173), 66 states have call predecessors, (173), 65 states have return successors, (172), 165 states have call predecessors, (172), 169 states have call successors, (172) [2021-11-19 13:20:21,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1076 transitions. [2021-11-19 13:20:21,503 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1076 transitions. Word has length 16 [2021-11-19 13:20:21,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:21,504 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1076 transitions. [2021-11-19 13:20:21,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:20:21,504 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1076 transitions. [2021-11-19 13:20:21,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 13:20:21,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:21,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:20:21,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:21,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:21,725 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:21,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash 208359179, now seen corresponding path program 1 times [2021-11-19 13:20:21,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:21,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134178790] [2021-11-19 13:20:21,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:21,728 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:21,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:21,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:21,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:20:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:22,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:20:22,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:22,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:22,642 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:22,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134178790] [2021-11-19 13:20:22,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134178790] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:22,643 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:22,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-19 13:20:22,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982647072] [2021-11-19 13:20:22,643 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:22,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:20:22,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:22,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:20:22,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:20:22,646 INFO L87 Difference]: Start difference. First operand 820 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:20:22,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:22,840 INFO L93 Difference]: Finished difference Result 2433 states and 3207 transitions. [2021-11-19 13:20:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:20:22,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-19 13:20:22,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:22,868 INFO L225 Difference]: With dead ends: 2433 [2021-11-19 13:20:22,868 INFO L226 Difference]: Without dead ends: 1617 [2021-11-19 13:20:22,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:20:22,880 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 529 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:22,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 1161 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:20:22,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-11-19 13:20:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1610. [2021-11-19 13:20:23,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1141 states have (on average 1.2541630148992111) internal successors, (1431), 1160 states have internal predecessors, (1431), 340 states have call successors, (340), 129 states have call predecessors, (340), 128 states have return successors, (346), 328 states have call predecessors, (346), 336 states have call successors, (346) [2021-11-19 13:20:23,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2117 transitions. [2021-11-19 13:20:23,101 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2117 transitions. Word has length 17 [2021-11-19 13:20:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:23,101 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 2117 transitions. [2021-11-19 13:20:23,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:20:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2117 transitions. [2021-11-19 13:20:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 13:20:23,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:23,115 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:20:23,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:23,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:23,338 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:23,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:23,339 INFO L85 PathProgramCache]: Analyzing trace with hash 26582145, now seen corresponding path program 1 times [2021-11-19 13:20:23,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:23,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503700530] [2021-11-19 13:20:23,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:23,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:23,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:23,343 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:23,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:20:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:23,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:20:23,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:20:24,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:25,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:20:25,067 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:25,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503700530] [2021-11-19 13:20:25,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503700530] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:25,068 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:25,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 13:20:25,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919259784] [2021-11-19 13:20:25,069 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:25,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:20:25,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:25,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:20:25,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:20:25,072 INFO L87 Difference]: Start difference. First operand 1610 states and 2117 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 13:20:25,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:25,227 INFO L93 Difference]: Finished difference Result 3212 states and 4225 transitions. [2021-11-19 13:20:25,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:20:25,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 71 [2021-11-19 13:20:25,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:25,242 INFO L225 Difference]: With dead ends: 3212 [2021-11-19 13:20:25,242 INFO L226 Difference]: Without dead ends: 1610 [2021-11-19 13:20:25,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:20:25,251 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 0 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:25,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2179 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:20:25,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2021-11-19 13:20:25,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1610. [2021-11-19 13:20:25,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1141 states have (on average 1.2532865907099036) internal successors, (1430), 1160 states have internal predecessors, (1430), 340 states have call successors, (340), 129 states have call predecessors, (340), 128 states have return successors, (346), 328 states have call predecessors, (346), 336 states have call successors, (346) [2021-11-19 13:20:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2116 transitions. [2021-11-19 13:20:25,387 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2116 transitions. Word has length 71 [2021-11-19 13:20:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:25,387 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 2116 transitions. [2021-11-19 13:20:25,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 13:20:25,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2116 transitions. [2021-11-19 13:20:25,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 13:20:25,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:25,394 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:20:25,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:25,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:25,615 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:25,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2146869344, now seen corresponding path program 1 times [2021-11-19 13:20:25,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:25,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438375156] [2021-11-19 13:20:25,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:25,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:25,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:25,619 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:25,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:20:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:26,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:20:26,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:20:26,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:20:27,069 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:27,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438375156] [2021-11-19 13:20:27,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438375156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:27,070 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:27,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:20:27,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943139080] [2021-11-19 13:20:27,070 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:27,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:20:27,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:27,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:20:27,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:20:27,072 INFO L87 Difference]: Start difference. First operand 1610 states and 2116 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 13:20:27,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:27,801 INFO L93 Difference]: Finished difference Result 4640 states and 6494 transitions. [2021-11-19 13:20:27,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:20:27,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 71 [2021-11-19 13:20:27,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:27,831 INFO L225 Difference]: With dead ends: 4640 [2021-11-19 13:20:27,832 INFO L226 Difference]: Without dead ends: 3041 [2021-11-19 13:20:27,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:20:27,840 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 374 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:27,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 1810 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:20:27,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2021-11-19 13:20:28,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 3017. [2021-11-19 13:20:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 2140 states have (on average 1.3191588785046728) internal successors, (2823), 2191 states have internal predecessors, (2823), 748 states have call successors, (748), 129 states have call predecessors, (748), 128 states have return successors, (770), 720 states have call predecessors, (770), 744 states have call successors, (770) [2021-11-19 13:20:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 4341 transitions. [2021-11-19 13:20:28,083 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 4341 transitions. Word has length 71 [2021-11-19 13:20:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:28,084 INFO L470 AbstractCegarLoop]: Abstraction has 3017 states and 4341 transitions. [2021-11-19 13:20:28,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 13:20:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 4341 transitions. [2021-11-19 13:20:28,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 13:20:28,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:28,087 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:20:28,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:28,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:28,308 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:28,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:28,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1152569613, now seen corresponding path program 1 times [2021-11-19 13:20:28,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:28,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558184885] [2021-11-19 13:20:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:28,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:28,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:28,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:28,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:20:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:28,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:20:28,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:29,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:29,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:29,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558184885] [2021-11-19 13:20:29,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558184885] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:29,622 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:29,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:20:29,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263098824] [2021-11-19 13:20:29,623 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:29,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:20:29,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:29,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:20:29,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:20:29,625 INFO L87 Difference]: Start difference. First operand 3017 states and 4341 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:20:31,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:31,053 INFO L93 Difference]: Finished difference Result 10672 states and 15980 transitions. [2021-11-19 13:20:31,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:20:31,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 68 [2021-11-19 13:20:31,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:31,119 INFO L225 Difference]: With dead ends: 10672 [2021-11-19 13:20:31,119 INFO L226 Difference]: Without dead ends: 7667 [2021-11-19 13:20:31,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:20:31,133 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 669 mSDsluCounter, 3353 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 4413 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:31,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 4413 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:20:31,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7667 states. [2021-11-19 13:20:31,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7667 to 3041. [2021-11-19 13:20:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 2164 states have (on average 1.3156192236598891) internal successors, (2847), 2215 states have internal predecessors, (2847), 748 states have call successors, (748), 129 states have call predecessors, (748), 128 states have return successors, (770), 720 states have call predecessors, (770), 744 states have call successors, (770) [2021-11-19 13:20:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4365 transitions. [2021-11-19 13:20:31,570 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4365 transitions. Word has length 68 [2021-11-19 13:20:31,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:31,571 INFO L470 AbstractCegarLoop]: Abstraction has 3041 states and 4365 transitions. [2021-11-19 13:20:31,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:20:31,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4365 transitions. [2021-11-19 13:20:31,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 13:20:31,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:31,576 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:20:31,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:31,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:31,791 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:31,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:31,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1776712988, now seen corresponding path program 1 times [2021-11-19 13:20:31,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:31,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14361262] [2021-11-19 13:20:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:31,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:31,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:31,794 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:31,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:20:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:32,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:20:32,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:32,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:33,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:33,062 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:33,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14361262] [2021-11-19 13:20:33,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14361262] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:33,062 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:33,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:20:33,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042713628] [2021-11-19 13:20:33,065 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:33,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:20:33,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:33,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:20:33,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:20:33,068 INFO L87 Difference]: Start difference. First operand 3041 states and 4365 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:20:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:34,269 INFO L93 Difference]: Finished difference Result 9292 states and 13796 transitions. [2021-11-19 13:20:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:20:34,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 69 [2021-11-19 13:20:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:34,330 INFO L225 Difference]: With dead ends: 9292 [2021-11-19 13:20:34,331 INFO L226 Difference]: Without dead ends: 6263 [2021-11-19 13:20:34,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:20:34,346 INFO L933 BasicCegarLoop]: 951 mSDtfsCounter, 616 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 3419 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:34,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 3419 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:20:34,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2021-11-19 13:20:34,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 3065. [2021-11-19 13:20:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3065 states, 2188 states have (on average 1.3121572212065813) internal successors, (2871), 2239 states have internal predecessors, (2871), 748 states have call successors, (748), 129 states have call predecessors, (748), 128 states have return successors, (770), 720 states have call predecessors, (770), 744 states have call successors, (770) [2021-11-19 13:20:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3065 states to 3065 states and 4389 transitions. [2021-11-19 13:20:34,814 INFO L78 Accepts]: Start accepts. Automaton has 3065 states and 4389 transitions. Word has length 69 [2021-11-19 13:20:34,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:34,814 INFO L470 AbstractCegarLoop]: Abstraction has 3065 states and 4389 transitions. [2021-11-19 13:20:34,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:20:34,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3065 states and 4389 transitions. [2021-11-19 13:20:34,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 13:20:34,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:34,819 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:20:34,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:35,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:35,035 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:35,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:35,036 INFO L85 PathProgramCache]: Analyzing trace with hash 676145405, now seen corresponding path program 1 times [2021-11-19 13:20:35,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:35,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366077377] [2021-11-19 13:20:35,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:35,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:35,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:35,039 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:35,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:20:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:35,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 13:20:35,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:36,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:36,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:37,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:37,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366077377] [2021-11-19 13:20:37,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366077377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:37,611 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:37,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-19 13:20:37,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074494308] [2021-11-19 13:20:37,612 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:37,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:20:37,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:37,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:20:37,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:20:37,613 INFO L87 Difference]: Start difference. First operand 3065 states and 4389 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 13:20:37,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:37,989 INFO L93 Difference]: Finished difference Result 4633 states and 6678 transitions. [2021-11-19 13:20:37,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:20:37,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2021-11-19 13:20:37,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:38,030 INFO L225 Difference]: With dead ends: 4633 [2021-11-19 13:20:38,030 INFO L226 Difference]: Without dead ends: 3097 [2021-11-19 13:20:38,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:20:38,039 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 2 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3260 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:38,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3260 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:20:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2021-11-19 13:20:38,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 3097. [2021-11-19 13:20:38,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3097 states, 2210 states have (on average 1.3090497737556561) internal successors, (2893), 2263 states have internal predecessors, (2893), 748 states have call successors, (748), 129 states have call predecessors, (748), 138 states have return successors, (808), 728 states have call predecessors, (808), 744 states have call successors, (808) [2021-11-19 13:20:38,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 4449 transitions. [2021-11-19 13:20:38,324 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 4449 transitions. Word has length 69 [2021-11-19 13:20:38,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:38,326 INFO L470 AbstractCegarLoop]: Abstraction has 3097 states and 4449 transitions. [2021-11-19 13:20:38,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 13:20:38,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 4449 transitions. [2021-11-19 13:20:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 13:20:38,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:38,330 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:20:38,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:38,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:38,552 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:38,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:38,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1333958436, now seen corresponding path program 1 times [2021-11-19 13:20:38,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:38,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456508467] [2021-11-19 13:20:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:38,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:38,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:38,555 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:38,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:20:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:39,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:20:39,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:39,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:40,596 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:40,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456508467] [2021-11-19 13:20:40,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456508467] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:40,596 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:40,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-11-19 13:20:40,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417671965] [2021-11-19 13:20:40,597 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:40,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:20:40,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:40,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:20:40,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:20:40,599 INFO L87 Difference]: Start difference. First operand 3097 states and 4449 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 13:20:41,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:41,584 INFO L93 Difference]: Finished difference Result 7309 states and 10704 transitions. [2021-11-19 13:20:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:20:41,587 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2021-11-19 13:20:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:41,612 INFO L225 Difference]: With dead ends: 7309 [2021-11-19 13:20:41,613 INFO L226 Difference]: Without dead ends: 4224 [2021-11-19 13:20:41,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:20:41,628 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 217 mSDsluCounter, 6972 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 7882 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:41,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 7882 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:20:41,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4224 states. [2021-11-19 13:20:41,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4224 to 3105. [2021-11-19 13:20:41,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 2218 states have (on average 1.306131650135257) internal successors, (2897), 2267 states have internal predecessors, (2897), 748 states have call successors, (748), 129 states have call predecessors, (748), 138 states have return successors, (808), 732 states have call predecessors, (808), 744 states have call successors, (808) [2021-11-19 13:20:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 4453 transitions. [2021-11-19 13:20:41,937 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 4453 transitions. Word has length 69 [2021-11-19 13:20:41,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:41,939 INFO L470 AbstractCegarLoop]: Abstraction has 3105 states and 4453 transitions. [2021-11-19 13:20:41,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 13:20:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 4453 transitions. [2021-11-19 13:20:41,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 13:20:41,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:41,948 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:20:41,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:42,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:42,163 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:42,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1804654053, now seen corresponding path program 1 times [2021-11-19 13:20:42,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:42,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924320789] [2021-11-19 13:20:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:42,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:42,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:42,167 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:42,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:20:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:42,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:20:42,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:43,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:20:43,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:43,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924320789] [2021-11-19 13:20:43,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924320789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:43,693 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:43,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 13:20:43,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650526239] [2021-11-19 13:20:43,693 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:43,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:20:43,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:43,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:20:43,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:20:43,694 INFO L87 Difference]: Start difference. First operand 3105 states and 4453 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 13:20:44,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:44,172 INFO L93 Difference]: Finished difference Result 7485 states and 10950 transitions. [2021-11-19 13:20:44,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:20:44,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 75 [2021-11-19 13:20:44,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:44,204 INFO L225 Difference]: With dead ends: 7485 [2021-11-19 13:20:44,204 INFO L226 Difference]: Without dead ends: 4392 [2021-11-19 13:20:44,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:20:44,222 INFO L933 BasicCegarLoop]: 826 mSDtfsCounter, 168 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:44,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 3069 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:20:44,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2021-11-19 13:20:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 2793. [2021-11-19 13:20:44,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2793 states, 2004 states have (on average 1.2969061876247505) internal successors, (2599), 2029 states have internal predecessors, (2599), 652 states have call successors, (652), 127 states have call predecessors, (652), 136 states have return successors, (709), 648 states have call predecessors, (709), 648 states have call successors, (709) [2021-11-19 13:20:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2793 states to 2793 states and 3960 transitions. [2021-11-19 13:20:44,540 INFO L78 Accepts]: Start accepts. Automaton has 2793 states and 3960 transitions. Word has length 75 [2021-11-19 13:20:44,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:44,540 INFO L470 AbstractCegarLoop]: Abstraction has 2793 states and 3960 transitions. [2021-11-19 13:20:44,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 13:20:44,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2793 states and 3960 transitions. [2021-11-19 13:20:44,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 13:20:44,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:44,546 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:20:44,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:44,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:44,760 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:44,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:44,760 INFO L85 PathProgramCache]: Analyzing trace with hash -506709307, now seen corresponding path program 1 times [2021-11-19 13:20:44,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:44,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581378481] [2021-11-19 13:20:44,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:44,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:44,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:44,762 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:44,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:20:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:45,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:20:45,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:46,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:20:47,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:47,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581378481] [2021-11-19 13:20:47,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581378481] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:47,195 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:47,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-19 13:20:47,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135660148] [2021-11-19 13:20:47,195 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:47,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:20:47,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:47,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:20:47,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:20:47,197 INFO L87 Difference]: Start difference. First operand 2793 states and 3960 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 8 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-19 13:20:49,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:20:51,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:20:53,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:20:55,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:20:57,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:01,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:03,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:06,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:08,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:10,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:12,888 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:17,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:19,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:21,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:24,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:26,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:28,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:30,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:32,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:34,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:38,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:41,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:43,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:46,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:48,485 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:50,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:53,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:55,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:57,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:59,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:22:01,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:22:03,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:22:11,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:11,957 INFO L93 Difference]: Finished difference Result 11531 states and 16542 transitions. [2021-11-19 13:22:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:22:11,958 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 8 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 75 [2021-11-19 13:22:11,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:12,007 INFO L225 Difference]: With dead ends: 11531 [2021-11-19 13:22:12,008 INFO L226 Difference]: Without dead ends: 9957 [2021-11-19 13:22:12,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:22:12,019 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 4963 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 3297 mSolverCounterSat, 2065 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 5391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2065 IncrementalHoareTripleChecker+Valid, 3297 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:12,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5197 Valid, 3109 Invalid, 5391 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2065 Valid, 3297 Invalid, 29 Unknown, 0 Unchecked, 83.4s Time] [2021-11-19 13:22:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9957 states. [2021-11-19 13:22:12,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9957 to 8639. [2021-11-19 13:22:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8639 states, 6194 states have (on average 1.3020665159832097) internal successors, (8065), 6273 states have internal predecessors, (8065), 2036 states have call successors, (2036), 373 states have call predecessors, (2036), 408 states have return successors, (2346), 2052 states have call predecessors, (2346), 2032 states have call successors, (2346) [2021-11-19 13:22:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8639 states to 8639 states and 12447 transitions. [2021-11-19 13:22:12,893 INFO L78 Accepts]: Start accepts. Automaton has 8639 states and 12447 transitions. Word has length 75 [2021-11-19 13:22:12,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:12,895 INFO L470 AbstractCegarLoop]: Abstraction has 8639 states and 12447 transitions. [2021-11-19 13:22:12,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 8 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-19 13:22:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 8639 states and 12447 transitions. [2021-11-19 13:22:12,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 13:22:12,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:12,900 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:12,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:13,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:13,115 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:13,115 INFO L85 PathProgramCache]: Analyzing trace with hash -9266808, now seen corresponding path program 1 times [2021-11-19 13:22:13,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:13,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711069470] [2021-11-19 13:22:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:13,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:13,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:13,118 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:13,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:22:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:13,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:22:13,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:22:14,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:22:14,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:14,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711069470] [2021-11-19 13:22:14,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711069470] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:14,561 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:14,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:22:14,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714310456] [2021-11-19 13:22:14,562 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:14,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:22:14,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:14,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:22:14,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:14,563 INFO L87 Difference]: Start difference. First operand 8639 states and 12447 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 13:22:15,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:15,281 INFO L93 Difference]: Finished difference Result 17290 states and 25182 transitions. [2021-11-19 13:22:15,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:22:15,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 94 [2021-11-19 13:22:15,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:15,331 INFO L225 Difference]: With dead ends: 17290 [2021-11-19 13:22:15,332 INFO L226 Difference]: Without dead ends: 8663 [2021-11-19 13:22:15,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:15,371 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 0 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:15,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1088 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:22:15,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8663 states. [2021-11-19 13:22:16,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8663 to 8663. [2021-11-19 13:22:16,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8663 states, 6218 states have (on average 1.3009006111289805) internal successors, (8089), 6297 states have internal predecessors, (8089), 2036 states have call successors, (2036), 373 states have call predecessors, (2036), 408 states have return successors, (2346), 2052 states have call predecessors, (2346), 2032 states have call successors, (2346) [2021-11-19 13:22:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8663 states to 8663 states and 12471 transitions. [2021-11-19 13:22:16,157 INFO L78 Accepts]: Start accepts. Automaton has 8663 states and 12471 transitions. Word has length 94 [2021-11-19 13:22:16,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:16,157 INFO L470 AbstractCegarLoop]: Abstraction has 8663 states and 12471 transitions. [2021-11-19 13:22:16,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 13:22:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 8663 states and 12471 transitions. [2021-11-19 13:22:16,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 13:22:16,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:16,162 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:16,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:16,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:16,383 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:16,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:16,384 INFO L85 PathProgramCache]: Analyzing trace with hash -360508632, now seen corresponding path program 1 times [2021-11-19 13:22:16,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:16,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809644174] [2021-11-19 13:22:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:16,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:16,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:16,386 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:16,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:22:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:17,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:22:17,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:22:17,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:18,434 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:22:18,434 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:18,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809644174] [2021-11-19 13:22:18,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809644174] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:18,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1466380845] [2021-11-19 13:22:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:18,435 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:18,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:22:18,436 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:22:18,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 13:22:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:18,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 13:22:18,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 13:22:19,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 13:22:21,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1466380845] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:21,000 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:22:21,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 18 [2021-11-19 13:22:21,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510489284] [2021-11-19 13:22:21,001 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:21,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:22:21,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:21,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:22:21,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:22:21,003 INFO L87 Difference]: Start difference. First operand 8663 states and 12471 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 13:22:23,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:23,737 INFO L93 Difference]: Finished difference Result 21533 states and 31535 transitions. [2021-11-19 13:22:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:22:23,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 96 [2021-11-19 13:22:23,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:23,799 INFO L225 Difference]: With dead ends: 21533 [2021-11-19 13:22:23,799 INFO L226 Difference]: Without dead ends: 12882 [2021-11-19 13:22:23,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:22:23,825 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 174 mSDsluCounter, 6444 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 7203 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:23,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 7203 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 13:22:23,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12882 states. [2021-11-19 13:22:24,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12882 to 8379. [2021-11-19 13:22:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8379 states, 6078 states have (on average 1.2982889108259297) internal successors, (7891), 6109 states have internal predecessors, (7891), 1912 states have call successors, (1912), 353 states have call predecessors, (1912), 388 states have return successors, (2200), 1976 states have call predecessors, (2200), 1908 states have call successors, (2200) [2021-11-19 13:22:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 12003 transitions. [2021-11-19 13:22:24,840 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 12003 transitions. Word has length 96 [2021-11-19 13:22:24,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:24,841 INFO L470 AbstractCegarLoop]: Abstraction has 8379 states and 12003 transitions. [2021-11-19 13:22:24,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 13:22:24,842 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 12003 transitions. [2021-11-19 13:22:24,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 13:22:24,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:24,855 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:24,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:25,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:25,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:25,279 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:25,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:25,280 INFO L85 PathProgramCache]: Analyzing trace with hash 197854953, now seen corresponding path program 1 times [2021-11-19 13:22:25,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:25,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133579849] [2021-11-19 13:22:25,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:25,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:25,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:25,283 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:25,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:22:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:25,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:22:25,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:26,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:27,253 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:27,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133579849] [2021-11-19 13:22:27,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133579849] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:27,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [256362513] [2021-11-19 13:22:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:27,254 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:27,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:22:27,255 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:22:27,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-19 13:22:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:27,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:22:27,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:22:28,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:22:29,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [256362513] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:29,715 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:22:29,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [5, 5] total 16 [2021-11-19 13:22:29,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234052300] [2021-11-19 13:22:29,716 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:29,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:22:29,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:22:29,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:22:29,717 INFO L87 Difference]: Start difference. First operand 8379 states and 12003 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:22:31,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:31,917 INFO L93 Difference]: Finished difference Result 22509 states and 33011 transitions. [2021-11-19 13:22:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:22:31,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2021-11-19 13:22:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:31,981 INFO L225 Difference]: With dead ends: 22509 [2021-11-19 13:22:31,981 INFO L226 Difference]: Without dead ends: 14142 [2021-11-19 13:22:32,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:22:32,004 INFO L933 BasicCegarLoop]: 819 mSDtfsCounter, 228 mSDsluCounter, 6285 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 7104 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:32,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 7104 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:22:32,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14142 states. [2021-11-19 13:22:32,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14142 to 8379. [2021-11-19 13:22:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8379 states, 6078 states have (on average 1.2943402435011517) internal successors, (7867), 6109 states have internal predecessors, (7867), 1912 states have call successors, (1912), 353 states have call predecessors, (1912), 388 states have return successors, (2200), 1976 states have call predecessors, (2200), 1908 states have call successors, (2200) [2021-11-19 13:22:32,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 11979 transitions. [2021-11-19 13:22:32,903 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 11979 transitions. Word has length 94 [2021-11-19 13:22:32,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:32,904 INFO L470 AbstractCegarLoop]: Abstraction has 8379 states and 11979 transitions. [2021-11-19 13:22:32,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:22:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 11979 transitions. [2021-11-19 13:22:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 13:22:32,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:32,910 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:32,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 13:22:33,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:33,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:33,323 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:33,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1871827029, now seen corresponding path program 1 times [2021-11-19 13:22:33,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:33,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328862680] [2021-11-19 13:22:33,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:33,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:33,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:33,328 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:33,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 13:22:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:34,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:22:34,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:22:34,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:22:34,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:34,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328862680] [2021-11-19 13:22:34,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328862680] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:34,918 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:34,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 13:22:34,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077295181] [2021-11-19 13:22:34,918 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:34,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:22:34,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:34,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:22:34,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:22:34,920 INFO L87 Difference]: Start difference. First operand 8379 states and 11979 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 13:22:35,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:35,914 INFO L93 Difference]: Finished difference Result 20807 states and 30457 transitions. [2021-11-19 13:22:35,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:22:35,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2021-11-19 13:22:35,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:35,968 INFO L225 Difference]: With dead ends: 20807 [2021-11-19 13:22:35,968 INFO L226 Difference]: Without dead ends: 12440 [2021-11-19 13:22:35,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:22:35,993 INFO L933 BasicCegarLoop]: 824 mSDtfsCounter, 168 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:35,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 3066 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:22:36,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12440 states. [2021-11-19 13:22:36,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12440 to 7829. [2021-11-19 13:22:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7829 states, 5696 states have (on average 1.2887991573033708) internal successors, (7341), 5689 states have internal predecessors, (7341), 1744 states have call successors, (1744), 349 states have call predecessors, (1744), 388 states have return successors, (2044), 1838 states have call predecessors, (2044), 1740 states have call successors, (2044) [2021-11-19 13:22:36,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7829 states to 7829 states and 11129 transitions. [2021-11-19 13:22:36,876 INFO L78 Accepts]: Start accepts. Automaton has 7829 states and 11129 transitions. Word has length 87 [2021-11-19 13:22:36,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:36,876 INFO L470 AbstractCegarLoop]: Abstraction has 7829 states and 11129 transitions. [2021-11-19 13:22:36,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 13:22:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 7829 states and 11129 transitions. [2021-11-19 13:22:36,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 13:22:36,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:36,882 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:36,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:37,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:37,106 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:37,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:37,106 INFO L85 PathProgramCache]: Analyzing trace with hash -205382314, now seen corresponding path program 1 times [2021-11-19 13:22:37,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:37,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399068562] [2021-11-19 13:22:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:37,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:37,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:37,109 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:37,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 13:22:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:37,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 13:22:37,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:22:38,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:39,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:22:39,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:39,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399068562] [2021-11-19 13:22:39,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399068562] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:39,623 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:39,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-19 13:22:39,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083626708] [2021-11-19 13:22:39,623 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:39,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:22:39,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:39,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:22:39,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:22:39,625 INFO L87 Difference]: Start difference. First operand 7829 states and 11129 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 13:22:40,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:40,587 INFO L93 Difference]: Finished difference Result 12080 states and 17251 transitions. [2021-11-19 13:22:40,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:22:40,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2021-11-19 13:22:40,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:40,624 INFO L225 Difference]: With dead ends: 12080 [2021-11-19 13:22:40,625 INFO L226 Difference]: Without dead ends: 7845 [2021-11-19 13:22:40,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:22:40,645 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 2 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:40,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3254 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:22:40,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7845 states. [2021-11-19 13:22:41,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7845 to 7845. [2021-11-19 13:22:41,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7845 states, 5712 states have (on average 1.2879901960784315) internal successors, (7357), 5697 states have internal predecessors, (7357), 1744 states have call successors, (1744), 349 states have call predecessors, (1744), 388 states have return successors, (2044), 1846 states have call predecessors, (2044), 1740 states have call successors, (2044) [2021-11-19 13:22:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7845 states to 7845 states and 11145 transitions. [2021-11-19 13:22:41,808 INFO L78 Accepts]: Start accepts. Automaton has 7845 states and 11145 transitions. Word has length 87 [2021-11-19 13:22:41,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:41,809 INFO L470 AbstractCegarLoop]: Abstraction has 7845 states and 11145 transitions. [2021-11-19 13:22:41,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 13:22:41,809 INFO L276 IsEmpty]: Start isEmpty. Operand 7845 states and 11145 transitions. [2021-11-19 13:22:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 13:22:41,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:41,815 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:41,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:42,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:42,043 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:42,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:42,043 INFO L85 PathProgramCache]: Analyzing trace with hash 2079481141, now seen corresponding path program 1 times [2021-11-19 13:22:42,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:42,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866219227] [2021-11-19 13:22:42,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:42,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:42,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:42,045 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:42,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 13:22:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:42,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:22:42,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:22:42,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:22:43,155 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:43,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866219227] [2021-11-19 13:22:43,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866219227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:43,155 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:43,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:22:43,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470390361] [2021-11-19 13:22:43,159 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:43,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:22:43,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:43,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:22:43,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:43,160 INFO L87 Difference]: Start difference. First operand 7845 states and 11145 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 13:22:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:44,908 INFO L93 Difference]: Finished difference Result 17638 states and 25997 transitions. [2021-11-19 13:22:44,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:22:44,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2021-11-19 13:22:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:44,960 INFO L225 Difference]: With dead ends: 17638 [2021-11-19 13:22:44,960 INFO L226 Difference]: Without dead ends: 13395 [2021-11-19 13:22:44,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:44,974 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 394 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:44,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 2300 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:22:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13395 states. [2021-11-19 13:22:45,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13395 to 7917. [2021-11-19 13:22:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7917 states, 5784 states have (on average 1.2864799446749655) internal successors, (7441), 5769 states have internal predecessors, (7441), 1744 states have call successors, (1744), 349 states have call predecessors, (1744), 388 states have return successors, (2044), 1846 states have call predecessors, (2044), 1740 states have call successors, (2044) [2021-11-19 13:22:45,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7917 states to 7917 states and 11229 transitions. [2021-11-19 13:22:45,972 INFO L78 Accepts]: Start accepts. Automaton has 7917 states and 11229 transitions. Word has length 87 [2021-11-19 13:22:45,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:45,973 INFO L470 AbstractCegarLoop]: Abstraction has 7917 states and 11229 transitions. [2021-11-19 13:22:45,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 13:22:45,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7917 states and 11229 transitions. [2021-11-19 13:22:45,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 13:22:45,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:45,978 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:46,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:46,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:46,184 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:46,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:46,185 INFO L85 PathProgramCache]: Analyzing trace with hash 390816807, now seen corresponding path program 1 times [2021-11-19 13:22:46,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:46,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679784637] [2021-11-19 13:22:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:46,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:46,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:46,186 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:46,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 13:22:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:46,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:22:46,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:22:47,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 13:22:47,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:47,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679784637] [2021-11-19 13:22:47,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679784637] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:47,594 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:47,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:22:47,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337960081] [2021-11-19 13:22:47,594 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:47,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:22:47,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:22:47,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:22:47,596 INFO L87 Difference]: Start difference. First operand 7917 states and 11229 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 13:22:49,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:22:50,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:50,385 INFO L93 Difference]: Finished difference Result 15946 states and 22581 transitions. [2021-11-19 13:22:50,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:22:50,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 94 [2021-11-19 13:22:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:50,413 INFO L225 Difference]: With dead ends: 15946 [2021-11-19 13:22:50,413 INFO L226 Difference]: Without dead ends: 8035 [2021-11-19 13:22:50,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:22:50,434 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 39 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:50,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2212 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 13:22:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8035 states. [2021-11-19 13:22:51,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8035 to 7935. [2021-11-19 13:22:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7935 states, 5796 states have (on average 1.2857142857142858) internal successors, (7452), 5781 states have internal predecessors, (7452), 1747 states have call successors, (1747), 352 states have call predecessors, (1747), 391 states have return successors, (2047), 1849 states have call predecessors, (2047), 1743 states have call successors, (2047) [2021-11-19 13:22:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7935 states to 7935 states and 11246 transitions. [2021-11-19 13:22:51,272 INFO L78 Accepts]: Start accepts. Automaton has 7935 states and 11246 transitions. Word has length 94 [2021-11-19 13:22:51,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:51,273 INFO L470 AbstractCegarLoop]: Abstraction has 7935 states and 11246 transitions. [2021-11-19 13:22:51,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 13:22:51,274 INFO L276 IsEmpty]: Start isEmpty. Operand 7935 states and 11246 transitions. [2021-11-19 13:22:51,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 13:22:51,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:51,277 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:51,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:51,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:51,483 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:51,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:51,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1118734186, now seen corresponding path program 1 times [2021-11-19 13:22:51,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:51,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353514841] [2021-11-19 13:22:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:51,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:51,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:51,487 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:51,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 13:22:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:52,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:22:52,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:52,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:22:54,101 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:54,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353514841] [2021-11-19 13:22:54,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353514841] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:22:54,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:22:54,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-11-19 13:22:54,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557153541] [2021-11-19 13:22:54,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:54,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:22:54,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:54,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:22:54,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:22:54,104 INFO L87 Difference]: Start difference. First operand 7935 states and 11246 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 13:22:56,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:22:58,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:23:01,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:23:03,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:23:06,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:23:10,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:23:12,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:23:17,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:17,107 INFO L93 Difference]: Finished difference Result 16029 states and 22804 transitions. [2021-11-19 13:23:17,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:23:17,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 89 [2021-11-19 13:23:17,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:17,162 INFO L225 Difference]: With dead ends: 16029 [2021-11-19 13:23:17,162 INFO L226 Difference]: Without dead ends: 16026 [2021-11-19 13:23:17,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:23:17,171 INFO L933 BasicCegarLoop]: 1038 mSDtfsCounter, 1471 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 366 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:17,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1548 Valid, 1941 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 1132 Invalid, 7 Unknown, 0 Unchecked, 21.4s Time] [2021-11-19 13:23:17,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16026 states. [2021-11-19 13:23:18,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16026 to 15917. [2021-11-19 13:23:18,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15917 states, 11606 states have (on average 1.2869205583318972) internal successors, (14936), 11555 states have internal predecessors, (14936), 3531 states have call successors, (3531), 700 states have call predecessors, (3531), 779 states have return successors, (4219), 3769 states have call predecessors, (4219), 3527 states have call successors, (4219) [2021-11-19 13:23:18,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15917 states to 15917 states and 22686 transitions. [2021-11-19 13:23:18,459 INFO L78 Accepts]: Start accepts. Automaton has 15917 states and 22686 transitions. Word has length 89 [2021-11-19 13:23:18,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:18,459 INFO L470 AbstractCegarLoop]: Abstraction has 15917 states and 22686 transitions. [2021-11-19 13:23:18,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 13:23:18,460 INFO L276 IsEmpty]: Start isEmpty. Operand 15917 states and 22686 transitions. [2021-11-19 13:23:18,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 13:23:18,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:18,463 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:18,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:18,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:23:18,679 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:23:18,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1748979270, now seen corresponding path program 1 times [2021-11-19 13:23:18,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:18,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255545644] [2021-11-19 13:23:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:18,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:18,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:18,681 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:18,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 13:23:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:19,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 13:23:19,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:23:20,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:23:21,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:21,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255545644] [2021-11-19 13:23:21,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255545644] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:23:21,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1012328651] [2021-11-19 13:23:21,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:21,454 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:21,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:23:21,455 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:23:21,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 13:23:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:21,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 13:23:21,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:23:22,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:23:23,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1012328651] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:23:23,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750125904] [2021-11-19 13:23:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:23,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:23:23,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:23:23,446 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:23:23,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-19 13:23:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:23,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 13:23:23,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:24,184 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:23:24,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:23:25,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750125904] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:23:25,355 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:23:25,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12, 12] total 13 [2021-11-19 13:23:25,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312053498] [2021-11-19 13:23:25,356 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:23:25,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:23:25,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:23:25,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:23:25,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:23:25,358 INFO L87 Difference]: Start difference. First operand 15917 states and 22686 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 10 states have internal predecessors, (79), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 13:23:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:28,683 INFO L93 Difference]: Finished difference Result 40894 states and 59868 transitions. [2021-11-19 13:23:28,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:23:28,684 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 10 states have internal predecessors, (79), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) Word has length 94 [2021-11-19 13:23:28,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:28,821 INFO L225 Difference]: With dead ends: 40894 [2021-11-19 13:23:28,821 INFO L226 Difference]: Without dead ends: 24989 [2021-11-19 13:23:28,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:23:28,872 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 221 mSDsluCounter, 7874 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 8694 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:28,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 8694 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 13:23:28,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24989 states. [2021-11-19 13:23:30,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24989 to 15881. [2021-11-19 13:23:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15881 states, 11570 states have (on average 1.2878133102852205) internal successors, (14900), 11555 states have internal predecessors, (14900), 3531 states have call successors, (3531), 700 states have call predecessors, (3531), 779 states have return successors, (4135), 3685 states have call predecessors, (4135), 3527 states have call successors, (4135) [2021-11-19 13:23:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15881 states to 15881 states and 22566 transitions. [2021-11-19 13:23:30,988 INFO L78 Accepts]: Start accepts. Automaton has 15881 states and 22566 transitions. Word has length 94 [2021-11-19 13:23:30,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:30,988 INFO L470 AbstractCegarLoop]: Abstraction has 15881 states and 22566 transitions. [2021-11-19 13:23:30,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 10 states have internal predecessors, (79), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 13:23:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 15881 states and 22566 transitions. [2021-11-19 13:23:30,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 13:23:30,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:30,992 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:31,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:31,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:31,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:31,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:23:31,610 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:23:31,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:31,610 INFO L85 PathProgramCache]: Analyzing trace with hash 832679025, now seen corresponding path program 1 times [2021-11-19 13:23:31,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:31,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402549663] [2021-11-19 13:23:31,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:31,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:31,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:31,612 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:31,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 13:23:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:32,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 13:23:32,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:23:32,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:33,809 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:23:33,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:33,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402549663] [2021-11-19 13:23:33,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402549663] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:33,810 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:33,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-11-19 13:23:33,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881253653] [2021-11-19 13:23:33,810 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:33,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:23:33,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:23:33,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:23:33,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:23:33,812 INFO L87 Difference]: Start difference. First operand 15881 states and 22566 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:23:36,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:36,060 INFO L93 Difference]: Finished difference Result 38560 states and 56137 transitions. [2021-11-19 13:23:36,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:23:36,061 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2021-11-19 13:23:36,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:36,148 INFO L225 Difference]: With dead ends: 38560 [2021-11-19 13:23:36,148 INFO L226 Difference]: Without dead ends: 22691 [2021-11-19 13:23:36,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:23:36,189 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 213 mSDsluCounter, 6376 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 7211 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:36,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 7211 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:23:36,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22691 states. [2021-11-19 13:23:37,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22691 to 15865. [2021-11-19 13:23:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15865 states, 11554 states have (on average 1.2847498701748312) internal successors, (14844), 11547 states have internal predecessors, (14844), 3531 states have call successors, (3531), 700 states have call predecessors, (3531), 779 states have return successors, (4135), 3677 states have call predecessors, (4135), 3527 states have call successors, (4135) [2021-11-19 13:23:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15865 states to 15865 states and 22510 transitions. [2021-11-19 13:23:37,836 INFO L78 Accepts]: Start accepts. Automaton has 15865 states and 22510 transitions. Word has length 97 [2021-11-19 13:23:37,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:37,836 INFO L470 AbstractCegarLoop]: Abstraction has 15865 states and 22510 transitions. [2021-11-19 13:23:37,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:23:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 15865 states and 22510 transitions. [2021-11-19 13:23:37,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 13:23:37,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:37,840 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:37,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:38,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:23:38,061 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:23:38,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:38,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1118058599, now seen corresponding path program 1 times [2021-11-19 13:23:38,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:38,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554537773] [2021-11-19 13:23:38,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:38,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:38,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:38,064 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:38,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 13:23:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:38,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:23:38,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-19 13:23:39,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:23:39,803 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:39,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554537773] [2021-11-19 13:23:39,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554537773] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:23:39,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:23:39,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-19 13:23:39,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477205256] [2021-11-19 13:23:39,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:39,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:23:39,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:23:39,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:23:39,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:23:39,805 INFO L87 Difference]: Start difference. First operand 15865 states and 22510 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:23:41,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:23:44,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:23:45,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:45,401 INFO L93 Difference]: Finished difference Result 31823 states and 45147 transitions. [2021-11-19 13:23:45,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:23:45,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2021-11-19 13:23:45,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:45,471 INFO L225 Difference]: With dead ends: 31823 [2021-11-19 13:23:45,471 INFO L226 Difference]: Without dead ends: 15967 [2021-11-19 13:23:45,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:23:45,515 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 20 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:45,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2760 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2021-11-19 13:23:45,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15967 states. [2021-11-19 13:23:46,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15967 to 15874. [2021-11-19 13:23:46,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15874 states, 11563 states have (on average 1.284528236616795) internal successors, (14853), 11553 states have internal predecessors, (14853), 3531 states have call successors, (3531), 700 states have call predecessors, (3531), 779 states have return successors, (4134), 3680 states have call predecessors, (4134), 3527 states have call successors, (4134) [2021-11-19 13:23:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15874 states to 15874 states and 22518 transitions. [2021-11-19 13:23:46,789 INFO L78 Accepts]: Start accepts. Automaton has 15874 states and 22518 transitions. Word has length 108 [2021-11-19 13:23:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:46,789 INFO L470 AbstractCegarLoop]: Abstraction has 15874 states and 22518 transitions. [2021-11-19 13:23:46,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:23:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 15874 states and 22518 transitions. [2021-11-19 13:23:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 13:23:46,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:46,792 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:46,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:47,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:23:47,007 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:23:47,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:47,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1967666458, now seen corresponding path program 1 times [2021-11-19 13:23:47,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:47,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414259467] [2021-11-19 13:23:47,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:47,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:47,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:47,010 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:47,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-19 13:23:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:47,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:23:47,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-19 13:23:48,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-19 13:23:48,268 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:48,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414259467] [2021-11-19 13:23:48,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414259467] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:48,268 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:48,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:23:48,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510137407] [2021-11-19 13:23:48,269 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:48,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:23:48,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:23:48,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:23:48,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:23:48,270 INFO L87 Difference]: Start difference. First operand 15874 states and 22518 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 13:23:49,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:49,423 INFO L93 Difference]: Finished difference Result 31856 states and 45192 transitions. [2021-11-19 13:23:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:23:49,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 108 [2021-11-19 13:23:49,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:49,504 INFO L225 Difference]: With dead ends: 31856 [2021-11-19 13:23:49,505 INFO L226 Difference]: Without dead ends: 15994 [2021-11-19 13:23:49,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:23:49,553 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 2 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:49,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1626 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:23:49,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15994 states. [2021-11-19 13:23:50,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15994 to 15994. [2021-11-19 13:23:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15994 states, 11683 states have (on average 1.2816057519472739) internal successors, (14973), 11673 states have internal predecessors, (14973), 3531 states have call successors, (3531), 700 states have call predecessors, (3531), 779 states have return successors, (4134), 3680 states have call predecessors, (4134), 3527 states have call successors, (4134) [2021-11-19 13:23:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15994 states to 15994 states and 22638 transitions. [2021-11-19 13:23:50,989 INFO L78 Accepts]: Start accepts. Automaton has 15994 states and 22638 transitions. Word has length 108 [2021-11-19 13:23:50,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:50,990 INFO L470 AbstractCegarLoop]: Abstraction has 15994 states and 22638 transitions. [2021-11-19 13:23:50,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 13:23:50,990 INFO L276 IsEmpty]: Start isEmpty. Operand 15994 states and 22638 transitions. [2021-11-19 13:23:50,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 13:23:50,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:50,994 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:51,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:51,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:23:51,207 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:23:51,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:51,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2017394365, now seen corresponding path program 1 times [2021-11-19 13:23:51,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:51,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012677395] [2021-11-19 13:23:51,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:51,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:51,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:51,209 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:51,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 13:23:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:51,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:23:51,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:23:52,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:53,114 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:23:53,115 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:53,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012677395] [2021-11-19 13:23:53,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012677395] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:23:53,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [195728800] [2021-11-19 13:23:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:53,116 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:53,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:23:53,120 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:23:53,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-19 13:23:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:53,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 13:23:53,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:23:54,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:23:55,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [195728800] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:55,793 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:23:55,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [5, 5] total 16 [2021-11-19 13:23:55,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736194082] [2021-11-19 13:23:55,794 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:55,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:23:55,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:23:55,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:23:55,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:23:55,795 INFO L87 Difference]: Start difference. First operand 15994 states and 22638 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 13:23:58,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:58,357 INFO L93 Difference]: Finished difference Result 36959 states and 53563 transitions. [2021-11-19 13:23:58,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:23:58,366 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 2 states have call successors, (19) Word has length 120 [2021-11-19 13:23:58,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:58,465 INFO L225 Difference]: With dead ends: 36959 [2021-11-19 13:23:58,465 INFO L226 Difference]: Without dead ends: 24589 [2021-11-19 13:23:58,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:23:58,501 INFO L933 BasicCegarLoop]: 867 mSDtfsCounter, 224 mSDsluCounter, 6657 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 7524 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:58,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 7524 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:23:58,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24589 states. [2021-11-19 13:23:59,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24589 to 16042. [2021-11-19 13:24:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16042 states, 11731 states have (on average 1.2804534992754242) internal successors, (15021), 11697 states have internal predecessors, (15021), 3531 states have call successors, (3531), 700 states have call predecessors, (3531), 779 states have return successors, (4134), 3704 states have call predecessors, (4134), 3527 states have call successors, (4134) [2021-11-19 13:24:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16042 states to 16042 states and 22686 transitions. [2021-11-19 13:24:00,057 INFO L78 Accepts]: Start accepts. Automaton has 16042 states and 22686 transitions. Word has length 120 [2021-11-19 13:24:00,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:24:00,057 INFO L470 AbstractCegarLoop]: Abstraction has 16042 states and 22686 transitions. [2021-11-19 13:24:00,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 13:24:00,057 INFO L276 IsEmpty]: Start isEmpty. Operand 16042 states and 22686 transitions. [2021-11-19 13:24:00,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-19 13:24:00,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:00,059 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:24:00,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:00,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:00,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:24:00,460 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:24:00,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:00,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1853876661, now seen corresponding path program 1 times [2021-11-19 13:24:00,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:24:00,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51106293] [2021-11-19 13:24:00,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:00,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:24:00,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:24:00,462 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:24:00,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 13:24:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:01,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:24:01,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 13:24:01,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 13:24:02,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:24:02,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51106293] [2021-11-19 13:24:02,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51106293] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:24:02,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1854266793] [2021-11-19 13:24:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:02,613 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:24:02,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:24:02,614 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:24:02,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-19 13:24:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:03,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 13:24:03,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-19 13:24:04,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-19 13:24:05,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1854266793] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:24:05,390 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:24:05,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 18 [2021-11-19 13:24:05,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503825418] [2021-11-19 13:24:05,390 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:24:05,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:24:05,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:24:05,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:24:05,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:24:05,391 INFO L87 Difference]: Start difference. First operand 16042 states and 22686 transitions. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-19 13:24:08,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:24:08,630 INFO L93 Difference]: Finished difference Result 39798 states and 57329 transitions. [2021-11-19 13:24:08,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:24:08,631 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) Word has length 122 [2021-11-19 13:24:08,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:24:08,692 INFO L225 Difference]: With dead ends: 39798 [2021-11-19 13:24:08,692 INFO L226 Difference]: Without dead ends: 23768 [2021-11-19 13:24:08,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:24:08,723 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 178 mSDsluCounter, 6670 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 7459 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:24:08,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 7459 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 13:24:08,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23768 states. [2021-11-19 13:24:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23768 to 15521. [2021-11-19 13:24:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15521 states, 11430 states have (on average 1.278740157480315) internal successors, (14616), 11400 states have internal predecessors, (14616), 3339 states have call successors, (3339), 668 states have call predecessors, (3339), 751 states have return successors, (3918), 3512 states have call predecessors, (3918), 3335 states have call successors, (3918) [2021-11-19 13:24:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15521 states to 15521 states and 21873 transitions. [2021-11-19 13:24:10,213 INFO L78 Accepts]: Start accepts. Automaton has 15521 states and 21873 transitions. Word has length 122 [2021-11-19 13:24:10,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:24:10,214 INFO L470 AbstractCegarLoop]: Abstraction has 15521 states and 21873 transitions. [2021-11-19 13:24:10,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-19 13:24:10,214 INFO L276 IsEmpty]: Start isEmpty. Operand 15521 states and 21873 transitions. [2021-11-19 13:24:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 13:24:10,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:10,219 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:24:10,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:10,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:10,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:24:10,625 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:24:10,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1582644771, now seen corresponding path program 1 times [2021-11-19 13:24:10,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:24:10,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931012579] [2021-11-19 13:24:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:10,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:24:10,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:24:10,627 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:24:10,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-19 13:24:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:11,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:24:11,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:11,810 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:24:11,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:24:12,739 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:24:12,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931012579] [2021-11-19 13:24:12,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931012579] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:24:12,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [461260406] [2021-11-19 13:24:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:12,739 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:24:12,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:24:12,743 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:24:12,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-19 13:24:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:13,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 13:24:13,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:24:14,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:24:15,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [461260406] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:24:15,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074833534] [2021-11-19 13:24:15,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:15,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:24:15,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:24:15,908 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:24:15,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-19 13:24:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:16,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 13:24:16,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:24:16,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:24:17,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074833534] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:24:17,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:24:17,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 12, 12, 12, 12] total 19 [2021-11-19 13:24:17,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117557151] [2021-11-19 13:24:17,821 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:24:17,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 13:24:17,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:24:17,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 13:24:17,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:24:17,823 INFO L87 Difference]: Start difference. First operand 15521 states and 21873 transitions. Second operand has 19 states, 19 states have (on average 8.157894736842104) internal successors, (155), 16 states have internal predecessors, (155), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (32), 6 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-19 13:24:22,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:24:22,239 INFO L93 Difference]: Finished difference Result 40681 states and 59636 transitions. [2021-11-19 13:24:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:24:22,240 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.157894736842104) internal successors, (155), 16 states have internal predecessors, (155), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (32), 6 states have call predecessors, (32), 3 states have call successors, (32) Word has length 120 [2021-11-19 13:24:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:24:22,338 INFO L225 Difference]: With dead ends: 40681 [2021-11-19 13:24:22,339 INFO L226 Difference]: Without dead ends: 25172 [2021-11-19 13:24:22,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:24:22,373 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 232 mSDsluCounter, 10622 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 11401 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:24:22,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 11401 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 13:24:22,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25172 states. [2021-11-19 13:24:23,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25172 to 15497. [2021-11-19 13:24:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15497 states, 11406 states have (on average 1.2793266701735928) internal successors, (14592), 11448 states have internal predecessors, (14592), 3339 states have call successors, (3339), 668 states have call predecessors, (3339), 751 states have return successors, (3846), 3440 states have call predecessors, (3846), 3335 states have call successors, (3846) [2021-11-19 13:24:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15497 states to 15497 states and 21777 transitions. [2021-11-19 13:24:23,870 INFO L78 Accepts]: Start accepts. Automaton has 15497 states and 21777 transitions. Word has length 120 [2021-11-19 13:24:23,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:24:23,870 INFO L470 AbstractCegarLoop]: Abstraction has 15497 states and 21777 transitions. [2021-11-19 13:24:23,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.157894736842104) internal successors, (155), 16 states have internal predecessors, (155), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (32), 6 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-19 13:24:23,871 INFO L276 IsEmpty]: Start isEmpty. Operand 15497 states and 21777 transitions. [2021-11-19 13:24:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-19 13:24:23,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:23,872 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:24:23,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:24,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:24,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:24,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:24:24,476 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:24:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2053204873, now seen corresponding path program 1 times [2021-11-19 13:24:24,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:24:24,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919919817] [2021-11-19 13:24:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:24,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:24:24,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:24:24,479 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:24:24,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-19 13:24:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:25,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 13:24:25,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:24:25,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:24:27,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:24:27,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919919817] [2021-11-19 13:24:27,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919919817] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:24:27,158 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:24:27,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 13 [2021-11-19 13:24:27,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041400060] [2021-11-19 13:24:27,158 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:24:27,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:24:27,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:24:27,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:24:27,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:24:27,160 INFO L87 Difference]: Start difference. First operand 15497 states and 21777 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 10 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 13:24:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:24:30,929 INFO L93 Difference]: Finished difference Result 34148 states and 49144 transitions. [2021-11-19 13:24:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:24:30,930 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 10 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2021-11-19 13:24:30,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:24:30,989 INFO L225 Difference]: With dead ends: 34148 [2021-11-19 13:24:30,990 INFO L226 Difference]: Without dead ends: 22004 [2021-11-19 13:24:31,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:24:31,017 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 216 mSDsluCounter, 7954 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 8781 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:24:31,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 8781 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 13:24:31,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22004 states. [2021-11-19 13:24:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22004 to 15329. [2021-11-19 13:24:32,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15329 states, 11318 states have (on average 1.2793779819756141) internal successors, (14480), 11384 states have internal predecessors, (14480), 3267 states have call successors, (3267), 660 states have call predecessors, (3267), 743 states have return successors, (3726), 3344 states have call predecessors, (3726), 3263 states have call successors, (3726) [2021-11-19 13:24:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15329 states to 15329 states and 21473 transitions. [2021-11-19 13:24:32,512 INFO L78 Accepts]: Start accepts. Automaton has 15329 states and 21473 transitions. Word has length 104 [2021-11-19 13:24:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:24:32,512 INFO L470 AbstractCegarLoop]: Abstraction has 15329 states and 21473 transitions. [2021-11-19 13:24:32,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 10 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 13:24:32,512 INFO L276 IsEmpty]: Start isEmpty. Operand 15329 states and 21473 transitions. [2021-11-19 13:24:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-19 13:24:32,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:32,514 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:24:32,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:32,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:24:32,715 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:24:32,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:32,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1117139730, now seen corresponding path program 1 times [2021-11-19 13:24:32,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:24:32,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29663863] [2021-11-19 13:24:32,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:32,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:24:32,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:24:32,717 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:24:32,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-19 13:24:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:24:41,745 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 13:24:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:24:48,338 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-19 13:24:48,339 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 13:24:48,340 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 13:24:48,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:48,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:24:48,566 INFO L732 BasicCegarLoop]: Path program 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] [2021-11-19 13:24:48,569 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 13:24:48,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:24:48 BoogieIcfgContainer [2021-11-19 13:24:48,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 13:24:48,797 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 13:24:48,797 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 13:24:48,798 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 13:24:48,798 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:20:19" (3/4) ... [2021-11-19 13:24:48,802 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 13:24:48,803 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 13:24:48,809 INFO L158 Benchmark]: Toolchain (without parser) took 288397.64ms. Allocated memory was 62.9MB in the beginning and 3.1GB in the end (delta: 3.0GB). Free memory was 34.0MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2021-11-19 13:24:48,810 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 62.9MB. Free memory is still 43.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:24:48,810 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2787.02ms. Allocated memory was 62.9MB in the beginning and 205.5MB in the end (delta: 142.6MB). Free memory was 33.8MB in the beginning and 141.5MB in the end (delta: -107.7MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. [2021-11-19 13:24:48,811 INFO L158 Benchmark]: Boogie Procedure Inliner took 141.24ms. Allocated memory is still 205.5MB. Free memory was 141.5MB in the beginning and 132.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 13:24:48,816 INFO L158 Benchmark]: Boogie Preprocessor took 157.97ms. Allocated memory is still 205.5MB. Free memory was 132.0MB in the beginning and 121.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:24:48,817 INFO L158 Benchmark]: RCFGBuilder took 16356.37ms. Allocated memory is still 205.5MB. Free memory was 121.6MB in the beginning and 91.4MB in the end (delta: 30.1MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. [2021-11-19 13:24:48,817 INFO L158 Benchmark]: TraceAbstraction took 268942.53ms. Allocated memory was 205.5MB in the beginning and 3.1GB in the end (delta: 2.8GB). Free memory was 90.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2021-11-19 13:24:48,817 INFO L158 Benchmark]: Witness Printer took 5.43ms. Allocated memory is still 3.1GB. Free memory is still 1.8GB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:24:48,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 62.9MB. Free memory is still 43.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2787.02ms. Allocated memory was 62.9MB in the beginning and 205.5MB in the end (delta: 142.6MB). Free memory was 33.8MB in the beginning and 141.5MB in the end (delta: -107.7MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 141.24ms. Allocated memory is still 205.5MB. Free memory was 141.5MB in the beginning and 132.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 157.97ms. Allocated memory is still 205.5MB. Free memory was 132.0MB in the beginning and 121.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 16356.37ms. Allocated memory is still 205.5MB. Free memory was 121.6MB in the beginning and 91.4MB in the end (delta: 30.1MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. * TraceAbstraction took 268942.53ms. Allocated memory was 205.5MB in the beginning and 3.1GB in the end (delta: 2.8GB). Free memory was 90.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 5.43ms. Allocated memory is still 3.1GB. Free memory is still 1.8GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 5143. Possible FailurePath: [L5149] static struct lock_class_key __key___7 ; [L5150] static struct lock_class_key __key___8 ; [L5290-L5303] static char const __mod_author31[46] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'a', (char const )'u', (char const )'t', (char const )'h', (char const )'o', (char const )'r', (char const )'=', (char const )'S', (char const )'e', (char const )'b', (char const )'a', (char const )'s', (char const )'t', (char const )'i', (char const )'a', (char const )'n', (char const )' ', (char const )'H', (char const )'a', (char const )'a', (char const )'s', (char const )' ', (char const )'<', (char const )'h', (char const )'a', (char const )'a', (char const )'s', (char const )'@', (char const )'e', (char const )'m', (char const )'s', (char const )'-', (char const )'w', (char const )'u', (char const )'e', (char const )'n', (char const )'s', (char const )'c', (char const )'h', (char const )'e', (char const )'.', (char const )'c', (char const )'o', (char const )'m', (char const )'>', (char const )'\000'}; [L5304-L5323] static char const __mod_description32[70] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'d', (char const )'e', (char const )'s', (char const )'c', (char const )'r', (char const )'i', (char const )'p', (char const )'t', (char const )'i', (char const )'o', (char const )'n', (char const )'=', (char const )'C', (char const )'A', (char const )'N', (char const )' ', (char const )'d', (char const )'r', (char const )'i', (char const )'v', (char const )'e', (char const )'r', (char const )' ', (char const )'f', (char const )'o', (char const )'r', (char const )' ', (char const )'E', (char const )'M', (char const )'S', (char const )' ', (char const )'D', (char const )'r', (char const )'.', (char const )' ', (char const )'T', (char const )'h', (char const )'o', (char const )'m', (char const )'a', (char const )'s', (char const )' ', (char const )'W', (char const )'u', (char const )'e', (char const )'n', (char const )'s', (char const )'c', (char const )'h', (char const )'e', (char const )' ', (char const )'C', (char const )'A', (char const )'N', (char const )'/', (char const )'U', (char const )'S', (char const )'B', (char const )' ', (char const )'i', (char const )'n', (char const )'t', (char const )'e', (char const )'r', (char const )'f', (char const )'a', (char const )'c', (char const )'e', (char const )'s', (char const )'\000'}; [L5324-L5329] static char const __mod_license33[15] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'l', (char const )'i', (char const )'c', (char const )'e', (char const )'n', (char const )'s', (char const )'e', (char const )'=', (char const )'G', (char const )'P', (char const )'L', (char const )' ', (char const )'v', (char const )'2', (char const )'\000'}; [L5330-L5332] static struct usb_device_id ems_usb_table[1] = { {(__u16 )3, (__u16 )4822, (__u16 )1092, (unsigned short)0, (unsigned short)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, 0UL}}; [L6247-L6287] static struct net_device_ops const ems_usb_netdev_ops = {(int (*)(struct net_device *dev ))0, (void (*)(struct net_device *dev ))0, & ems_usb_open, & ems_usb_close, & ems_usb_start_xmit, (u16 (*)(struct net_device *dev , struct sk_buff *skb ))0, (void (*)(struct net_device *dev , int flags ))0, (void (*)(struct net_device *dev ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , void *addr ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , struct ifreq *ifr , int cmd ))0, (int (*)(struct net_device *dev , struct ifmap *map ))0, (int (*)(struct net_device *dev , int new_mtu ))0, (int (*)(struct net_device *dev , struct neigh_parms * ))0, (void (*)(struct net_device *dev ))0, (struct rtnl_link_stats64 *(*)(struct net_device *dev , struct rtnl_link_stats64 *storage ))0, (struct net_device_stats *(*)(struct net_device *dev ))0, (void (*)(struct net_device *dev , struct vlan_group *grp ))0, (void (*)(struct net_device *dev , unsigned short vid ))0, (void (*)(struct net_device *dev , unsigned short vid ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , struct netpoll_info *info ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , int queue , u8 *mac ))0, (int (*)(struct net_device *dev , int queue , u16 vlan , u8 qos ))0, (int (*)(struct net_device *dev , int vf , int rate ))0, (int (*)(struct net_device *dev , int vf , struct ifla_vf_info *ivf ))0, (int (*)(struct net_device *dev , int vf , struct nlattr **port ))0, (int (*)(struct net_device *dev , int vf , struct sk_buff *skb ))0, (int (*)(struct net_device *dev , u8 tc ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , u16 xid , struct scatterlist *sgl , unsigned int sgc ))0, (int (*)(struct net_device *dev , u16 xid ))0, (int (*)(struct net_device *dev , u16 xid , struct scatterlist *sgl , unsigned int sgc ))0, (int (*)(struct net_device *dev , u64 *wwn , int type ))0, (int (*)(struct net_device *dev , struct sk_buff const *skb , u16 rxq_index , u32 flow_id ))0, (int (*)(struct net_device *dev , struct net_device *slave_dev ))0, (int (*)(struct net_device *dev , struct net_device *slave_dev ))0, (u32 (*)(struct net_device *dev , u32 features ))0, (int (*)(struct net_device *dev , u32 features ))0}; [L6288-L6292] static struct can_bittiming_const ems_usb_bittiming_const = {{(char )'e', (char )'m', (char )'s', (char )'_', (char )'u', (char )'s', (char )'b', (char )'\000', (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0}, (__u32 )1, (__u32 )16, (__u32 )1, (__u32 )8, (__u32 )4, (__u32 )1, (__u32 )64, (__u32 )1}; [L6543-L6561] static struct usb_driver ems_usb_driver = {"ems_usb", & ems_usb_probe, & ems_usb_disconnect, (int (*)(struct usb_interface *intf , unsigned int code , void *buf ))0, (int (*)(struct usb_interface *intf , pm_message_t message ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (struct usb_device_id const *)(ems_usb_table), {{{{{0U}, 0U, 0U, (void *)0, {(struct lock_class_key *)0, {(struct lock_class *)0, (struct lock_class *)0}, (char const *)0, 0, 0UL}}}}, {(struct list_head *)0, (struct list_head *)0}}, {{(char const *)0, (struct bus_type *)0, (struct module *)0, (char const *)0, (_Bool)0, (struct of_device_id const *)0, (int (*)(struct device *dev ))0, (int (*)(struct device *dev ))0, (void (*)(struct device *dev ))0, (int (*)(struct device *dev , pm_message_t state ))0, (int (*)(struct device *dev ))0, (struct attribute_group const **)0, (struct dev_pm_ops const *)0, (struct driver_private *)0}, 0}, 0U, 0U, 0U}; [L6614] int LDV_IN_INTERRUPT ; [L6615] static int res_ems_usb_open_10 ; [L6616] static int res_ems_usb_close_12 ; [L6617] static int res_ems_usb_probe_16 ; [L6767] int ldv_urb_state = 0; [L6768] int ldv_coherent_state = 0; VAL [__key___7={295:0}, __key___8={163:0}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6619] struct net_device *var_group1 ; [L6620] struct sk_buff *var_group2 ; [L6621] struct usb_interface *var_group3 ; [L6622] struct usb_device_id const *var_ems_usb_probe_16_p1 ; [L6623] int tmp___7 ; [L6624] int ldv_s_ems_usb_netdev_ops_net_device_ops ; [L6625] int ldv_s_ems_usb_driver_usb_driver ; [L6626] int tmp___8 ; [L6627] int tmp___9 ; [L6630] LDV_IN_INTERRUPT = 1 [L6631] FCALL ldv_initialize() [L6632] CALL, EXPR ems_usb_init() VAL [__key___7={295:0}, __key___8={163:0}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6565] int err ; [L6569] CALL, EXPR usb_register(& ems_usb_driver) [L5140] int tmp___7 ; [L5143] CALL, EXPR usb_register_driver(driver, & __this_module, "ems_usb") [L7025] return __VERIFIER_nondet_int(); [L5143] RET, EXPR usb_register_driver(driver, & __this_module, "ems_usb") [L5143] tmp___7 = usb_register_driver(driver, & __this_module, "ems_usb") [L5145] return (tmp___7); VAL [\result=0, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, driver={123:0}, driver={123:0}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0] [L6569] RET, EXPR usb_register(& ems_usb_driver) [L6569] err = usb_register(& ems_usb_driver) [L6571] COND FALSE !(\read(err)) [L6578] return (0); VAL [\result=0, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, err=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6632] RET, EXPR ems_usb_init() VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_init()=0, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6632] tmp___7 = ems_usb_init() [L6634] COND FALSE !(\read(tmp___7)) [L6638] ldv_s_ems_usb_netdev_ops_net_device_ops = 0 [L6639] ldv_s_ems_usb_driver_usb_driver = 0 VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0] [L6641] COND TRUE 1 VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0] [L6644] tmp___9 = __VERIFIER_nondet_int() [L6646] COND TRUE \read(tmp___9) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___9=2147483648] [L6655] tmp___8 = __VERIFIER_nondet_int() [L6657] COND FALSE !(tmp___8 == 0) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=2147483648] [L6660] COND FALSE !(tmp___8 == 1) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=2147483648] [L6663] COND TRUE tmp___8 == 2 VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=2147483648] [L6704] CALL ems_usb_start_xmit(var_group2, var_group1) [L6048] struct ems_usb *dev ; [L6049] void *tmp___7 ; [L6050] struct ems_tx_urb_context *context ; [L6051] struct net_device_stats *stats ; [L6052] struct can_frame *cf ; [L6053] struct ems_cpc_msg *msg ; [L6054] struct urb *urb ; [L6055] u8 *buf ; [L6056] int i ; [L6057] int err ; [L6058] size_t size ; [L6059] int tmp___8 ; [L6060] void *tmp___9 ; [L6061] unsigned int tmp___10 ; [L6062] int tmp___11 ; [L6063] long tmp___12 ; VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:0}, skb={0:0}] [L6066] CALL, EXPR netdev_priv((struct net_device const *)netdev) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, dev={0:-2952}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L4976] return ((void *)((char *)dev + ((sizeof(struct net_device ) + 31UL) & 0x0fffffffffffffe0UL))); VAL [\result={0:-520}, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, dev={0:-2952}, dev={0:-2952}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6066] RET, EXPR netdev_priv((struct net_device const *)netdev) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, netdev={0:-2952}, netdev={0:-2952}, netdev_priv((struct net_device const *)netdev)={0:-520}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:0}, skb={0:0}] [L6066] tmp___7 = netdev_priv((struct net_device const *)netdev) [L6067] dev = (struct ems_usb *)tmp___7 [L6068] context = (struct ems_tx_urb_context *)((void *)0) [L6069] stats = & netdev->stats [L6070] EXPR skb->data [L6070] cf = (struct can_frame *)skb->data [L6071] size = 15UL + sizeof(struct cpc_can_msg ) [L6072] CALL, EXPR can_dropped_invalid_skb(netdev, skb) [L5252] struct can_frame const *cf ; [L5253] int tmp___7 ; [L5254] long tmp___8 ; [L5256] EXPR skb->data [L5256] cf = (struct can_frame const *)((struct can_frame *)skb->data) [L5257] EXPR skb->len VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, cf={0:36028797018963976}, dev={0:-2952}, dev={0:-2952}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:0}, skb={0:0}, skb->len=13] [L5257] COND FALSE !((unsigned long )skb->len != sizeof(*cf)) [L5260] EXPR cf->can_dlc VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, cf={0:36028797018963976}, cf->can_dlc=0, dev={0:-2952}, dev={0:-2952}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:0}, skb={0:0}] [L5260] COND FALSE !((int const )cf->can_dlc > 8) [L5263] tmp___7 = 0 VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, cf={0:36028797018963976}, dev={0:-2952}, dev={0:-2952}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:0}, skb={0:0}, tmp___7=0] [L5266] tmp___8 = __builtin_expect((long )tmp___7, 0L) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, cf={0:36028797018963976}, dev={0:-2952}, dev={0:-2952}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:0}, skb={0:0}, tmp___7=0, tmp___8=0] [L5268] COND FALSE !(\read(tmp___8)) [L5276] return (0); VAL [\result=0, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, cf={0:36028797018963976}, dev={0:-2952}, dev={0:-2952}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:0}, skb={0:0}, tmp___7=0, tmp___8=0] [L6072] RET, EXPR can_dropped_invalid_skb(netdev, skb) [L6072] tmp___8 = can_dropped_invalid_skb(netdev, skb) [L6074] COND FALSE !(\read(tmp___8)) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0] [L6079] CALL, EXPR usb_alloc_urb(0, 32U) VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6830] void *arbitrary_memory ; [L6831] void *tmp___7 ; VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6834] COND TRUE 1 VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6837] CALL, EXPR ldv_undefined_pointer() VAL [\old(ldv_urb_state)=0, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6982] CALL, EXPR ldv_malloc(0UL) VAL [\old(ldv_urb_state)=0, \old(size)=0, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6911] COND FALSE !(__VERIFIER_nondet_bool()) [L6912] return malloc(size); [L6982] RET, EXPR ldv_malloc(0UL) VAL [\old(ldv_urb_state)=0, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_malloc(0UL)={51:0}, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6982] return ldv_malloc(0UL); [L6837] RET, EXPR ldv_undefined_pointer() VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_undefined_pointer()={51:0}, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6837] tmp___7 = ldv_undefined_pointer() [L6838] arbitrary_memory = tmp___7 VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, arbitrary_memory={51:0}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7={51:0}] [L6840] COND FALSE !(! arbitrary_memory) [L6844] ldv_urb_state = ldv_urb_state + 1 [L6845] return ((struct urb *)arbitrary_memory); VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, \result={51:0}, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, arbitrary_memory={51:0}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7={51:0}] [L6079] RET, EXPR usb_alloc_urb(0, 32U) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, usb_alloc_urb(0, 32U)={51:0}] [L6079] urb = usb_alloc_urb(0, 32U) [L6081] COND FALSE !(! urb) [L6089] EXPR dev->udev VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, dev->udev={0:144115188075855872}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, urb={51:0}] [L6089] CALL, EXPR usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma) VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, dev={0:144115188075855872}, dma={51:104}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6773] void *arbitrary_memory ; [L6774] void *tmp___7 ; VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, dev={0:144115188075855872}, dev={0:144115188075855872}, dma={51:104}, dma={51:104}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6777] COND TRUE 1 VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, dev={0:144115188075855872}, dev={0:144115188075855872}, dma={51:104}, dma={51:104}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6780] CALL, EXPR ldv_undefined_pointer() VAL [\old(ldv_coherent_state)=0, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6982] CALL, EXPR ldv_malloc(0UL) VAL [\old(ldv_coherent_state)=0, \old(size)=0, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6911] COND FALSE !(__VERIFIER_nondet_bool()) [L6912] return malloc(size); [L6982] RET, EXPR ldv_malloc(0UL) VAL [\old(ldv_coherent_state)=0, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_malloc(0UL)={58:0}, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6982] return ldv_malloc(0UL); [L6780] RET, EXPR ldv_undefined_pointer() VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, dev={0:144115188075855872}, dev={0:144115188075855872}, dma={51:104}, dma={51:104}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_undefined_pointer()={58:0}, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6780] tmp___7 = ldv_undefined_pointer() [L6781] arbitrary_memory = tmp___7 VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, arbitrary_memory={58:0}, dev={0:144115188075855872}, dev={0:144115188075855872}, dma={51:104}, dma={51:104}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, tmp___7={58:0}] [L6783] COND FALSE !(! arbitrary_memory) [L6787] ldv_coherent_state = ldv_coherent_state + 1 [L6788] return (arbitrary_memory); VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, \result={58:0}, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, arbitrary_memory={58:0}, dev={0:144115188075855872}, dev={0:144115188075855872}, dma={51:104}, dma={51:104}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, tmp___7={58:0}] [L6089] RET, EXPR usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, dev->udev={0:144115188075855872}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, urb={51:0}, usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma)={58:0}] [L6089] tmp___9 = usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma) [L6090] buf = (u8 *)tmp___9 VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}] [L6092] COND FALSE !(! buf) [L6100] msg = (struct ems_cpc_msg *)(buf + 4) [L6101] EXPR cf->can_id [L6101] msg->msg.can_msg.id = cf->can_id & 536870911U [L6102] EXPR cf->can_dlc [L6102] msg->msg.can_msg.length = cf->can_dlc [L6103] EXPR cf->can_id VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, cf->can_id=-1073741824, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}] [L6103] COND TRUE cf->can_id & 1073741824U [L6104] EXPR cf->can_id VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, cf->can_id=-1073741824, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}] [L6104] COND TRUE cf->can_id & 2147483648U [L6105] msg->type = (u8 )16 VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}] [L6109] msg->length = (u8 )5 VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}] [L6132] EXPR msg->msg.can_msg.id [L6132] msg->msg.can_msg.id = msg->msg.can_msg.id [L6133] i = 0 VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}] [L6135] COND TRUE 1 VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}] [L6137] COND TRUE i < 10 VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}] [L6141] EXPR dev->tx_contexts[i].echo_index VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, dev->tx_contexts[i].echo_index=10, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}] [L6141] COND TRUE dev->tx_contexts[i].echo_index == 10U [L6142] context = & dev->tx_contexts[i] VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}] [L6151] COND TRUE ! context VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}] [L6153] FCALL usb_unanchor_urb(urb) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}] [L6154] EXPR dev->udev [L6154] EXPR urb->transfer_dma VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, dev->udev={0:144115188075855872}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}, urb->transfer_dma=0] [L6154] CALL usb_free_coherent(dev->udev, size, (void *)buf, urb->transfer_dma) VAL [\old(dma)=0, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, addr={58:0}, dev={0:144115188075855872}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6802] COND TRUE 1 VAL [\old(dma)=0, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, addr={58:0}, addr={58:0}, dev={0:144115188075855872}, dev={0:144115188075855872}, dma=0, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6804] COND FALSE !(! ((unsigned long )addr != (unsigned long )((void *)0))) VAL [\old(dma)=0, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, addr={58:0}, addr={58:0}, dev={0:144115188075855872}, dev={0:144115188075855872}, dma=0, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6810] COND TRUE \read(*addr) VAL [\old(dma)=0, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, addr={58:0}, addr={58:0}, dev={0:144115188075855872}, dev={0:144115188075855872}, dma=0, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6811] COND TRUE ldv_coherent_state >= 1 VAL [\old(dma)=0, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, addr={58:0}, addr={58:0}, dev={0:144115188075855872}, dev={0:144115188075855872}, dma=0, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6817] ldv_coherent_state = ldv_coherent_state - 1 VAL [\old(dma)=0, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, addr={58:0}, addr={58:0}, dev={0:144115188075855872}, dev={0:144115188075855872}, dma=0, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6154] RET usb_free_coherent(dev->udev, size, (void *)buf, urb->transfer_dma) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, dev->udev={0:144115188075855872}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, i=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}, urb->transfer_dma=0] [L6155] netdev->dev.parent [L6157] return ((netdev_tx_t )16); VAL [\result=16, __key___7={295:0}, __key___8={163:0}, __this_module={71:70}, buf={58:0}, cf={0:36028797018963976}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, i=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={58:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:0}, skb={0:0}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={58:0}, urb={51:0}] [L6704] RET ems_usb_start_xmit(var_group2, var_group1) [L6641] COND TRUE 1 VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=2147483648, var_group1={0:-2952}, var_group2={0:0}] [L6644] tmp___9 = __VERIFIER_nondet_int() [L6646] COND FALSE !(\read(tmp___9)) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-2952}, var_group2={0:0}] [L6648] COND FALSE !(! (ldv_s_ems_usb_netdev_ops_net_device_ops == 0)) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-2952}, var_group2={0:0}] [L6650] COND FALSE !(! (ldv_s_ems_usb_driver_usb_driver == 0)) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-2952}, var_group2={0:0}] [L6742] CALL ems_usb_exit() VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6587] FCALL usb_deregister(& ems_usb_driver) [L6742] RET ems_usb_exit() VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-2952}, var_group2={0:0}] [L6746] CALL ldv_check_final_state() [L6889] COND FALSE !(ldv_urb_state == 0) VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6892] CALL ldv_blast_assert() VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6754] reach_error() VAL [__key___7={295:0}, __key___8={163:0}, __this_module={71:70}, ems_usb_bittiming_const={291:0}, ems_usb_driver={123:0}, ems_usb_netdev_ops={138:0}, ems_usb_table={156:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 432 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 268.6s, OverallIterations: 27, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 154.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 39 mSolverCounterUnknown, 13292 SdHoareTripleChecker+Valid, 125.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11859 mSDsluCounter, 115155 SdHoareTripleChecker+Invalid, 122.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95207 mSDsCounter, 2792 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6014 IncrementalHoareTripleChecker+Invalid, 8845 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2792 mSolverCounterUnsat, 19948 mSDtfsCounter, 6014 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6089 GetRequests, 5886 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16042occurred in iteration=23, InterpolantAutomatonStates: 191, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 23.7s AutomataMinimizationTime, 26 MinimizatonAttempts, 81630 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 20.5s SatisfiabilityAnalysisTime, 49.5s InterpolantComputationTime, 3167 NumberOfCodeBlocks, 3167 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 6054 ConstructedInterpolants, 0 QuantifiedInterpolants, 8803 SizeOfPredicates, 70 NumberOfNonLiveVariables, 22188 ConjunctsInSsa, 256 ConjunctsInUnsatCore, 68 InterpolantComputations, 46 PerfectInterpolantSequences, 488/578 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-19 13:24:48,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7306c1c8-26ee-4393-960d-bb80d65aa90f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample