./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:41:41,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:41:41,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:41:41,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:41:41,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:41:41,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:41:41,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:41:41,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:41:41,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:41:41,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:41:41,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:41:41,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:41:41,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:41:41,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:41:41,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:41:41,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:41:41,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:41:41,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:41:41,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:41:41,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:41:41,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:41:41,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:41:41,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:41:41,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:41:41,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:41:41,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:41:41,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:41:41,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:41:41,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:41:41,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:41:41,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:41:41,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:41:41,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:41:41,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:41:41,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:41:41,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:41:41,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:41:41,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:41:41,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:41:41,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:41:41,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:41:41,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 03:41:41,624 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:41:41,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:41:41,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:41:41,625 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:41:41,626 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:41:41,626 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:41:41,626 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:41:41,626 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:41:41,626 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:41:41,627 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:41:41,627 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:41:41,627 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:41:41,627 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:41:41,628 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:41:41,628 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:41:41,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:41:41,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:41:41,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:41:41,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:41:41,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:41:41,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:41:41,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:41:41,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:41:41,630 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:41:41,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:41:41,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:41:41,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:41:41,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:41:41,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:41:41,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:41:41,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:41:41,632 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:41:41,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:41:41,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:41:41,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:41:41,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:41:41,633 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_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b [2021-11-03 03:41:41,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:41:41,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:41:41,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:41:41,909 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:41:41,910 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:41:41,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-03 03:41:41,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/data/050d06a13/769061f990f64bcdb3fda3b4f0a60b3a/FLAG3d331b750 [2021-11-03 03:41:42,681 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:41:42,681 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-03 03:41:42,719 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/data/050d06a13/769061f990f64bcdb3fda3b4f0a60b3a/FLAG3d331b750 [2021-11-03 03:41:42,994 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/data/050d06a13/769061f990f64bcdb3fda3b4f0a60b3a [2021-11-03 03:41:42,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:41:42,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:41:42,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:41:43,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:41:43,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:41:43,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:42" (1/1) ... [2021-11-03 03:41:43,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7325ec22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43, skipping insertion in model container [2021-11-03 03:41:43,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:42" (1/1) ... [2021-11-03 03:41:43,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:41:43,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:41:43,889 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-03 03:41:43,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:41:43,952 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 03:41:43,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@43068937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43, skipping insertion in model container [2021-11-03 03:41:43,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:41:43,953 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:41:43,955 INFO L168 Benchmark]: Toolchain (without parser) took 956.26 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 46.0 MB in the beginning and 58.8 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:41:43,956 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory was 68.1 MB in the beginning and 68.0 MB in the end (delta: 61.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:41:43,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 953.63 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 45.8 MB in the beginning and 58.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:41:43,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory was 68.1 MB in the beginning and 68.0 MB in the end (delta: 61.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 953.63 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 45.8 MB in the beginning and 58.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3618]: 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_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:41:46,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:41:46,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:41:46,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:41:46,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:41:46,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:41:46,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:41:46,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:41:46,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:41:46,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:41:46,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:41:46,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:41:46,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:41:46,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:41:46,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:41:46,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:41:46,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:41:46,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:41:46,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:41:46,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:41:46,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:41:46,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:41:46,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:41:46,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:41:46,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:41:46,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:41:46,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:41:46,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:41:46,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:41:46,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:41:46,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:41:46,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:41:46,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:41:46,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:41:46,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:41:46,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:41:46,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:41:46,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:41:46,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:41:46,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:41:46,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:41:46,341 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 03:41:46,367 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:41:46,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:41:46,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:41:46,369 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:41:46,369 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:41:46,369 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:41:46,369 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:41:46,369 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:41:46,370 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:41:46,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:41:46,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:41:46,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:41:46,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:41:46,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:41:46,372 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:41:46,372 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:41:46,372 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:41:46,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:41:46,373 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:41:46,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:41:46,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:41:46,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:41:46,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:41:46,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:41:46,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:41:46,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:41:46,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:41:46,375 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:41:46,375 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:41:46,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:41:46,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:41:46,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:41:46,376 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_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b [2021-11-03 03:41:46,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:41:46,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:41:46,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:41:46,753 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:41:46,754 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:41:46,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-03 03:41:46,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/data/316d6a870/5a3805e5cddb45c5a2119e8fd9219932/FLAG594f58f0f [2021-11-03 03:41:47,671 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:41:47,672 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-03 03:41:47,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/data/316d6a870/5a3805e5cddb45c5a2119e8fd9219932/FLAG594f58f0f [2021-11-03 03:41:47,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/data/316d6a870/5a3805e5cddb45c5a2119e8fd9219932 [2021-11-03 03:41:47,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:41:47,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:41:47,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:41:47,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:41:47,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:41:47,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:47" (1/1) ... [2021-11-03 03:41:47,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f491e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:47, skipping insertion in model container [2021-11-03 03:41:47,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:47" (1/1) ... [2021-11-03 03:41:47,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:41:47,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:41:48,686 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-03 03:41:48,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:41:48,836 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:41:48,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:41:49,114 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-03 03:41:49,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:41:49,154 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:41:49,332 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-03 03:41:49,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:41:49,385 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:41:49,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:49 WrapperNode [2021-11-03 03:41:49,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:41:49,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:41:49,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:41:49,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:41:49,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:49" (1/1) ... [2021-11-03 03:41:49,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:49" (1/1) ... [2021-11-03 03:41:49,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:41:49,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:41:49,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:41:49,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:41:49,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:49" (1/1) ... [2021-11-03 03:41:49,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:49" (1/1) ... [2021-11-03 03:41:49,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:49" (1/1) ... [2021-11-03 03:41:49,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:49" (1/1) ... [2021-11-03 03:41:49,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:49" (1/1) ... [2021-11-03 03:41:49,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:49" (1/1) ... [2021-11-03 03:41:49,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:49" (1/1) ... [2021-11-03 03:41:49,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:41:49,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:41:49,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:41:49,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:41:49,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:49" (1/1) ... [2021-11-03 03:41:49,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:41:49,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:41:49,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:41:49,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:41:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:41:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 03:41:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:41:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 03:41:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:41:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:41:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:41:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:41:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 03:41:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 03:41:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:41:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:41:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 03:41:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 03:41:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:41:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 03:41:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 03:41:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:41:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:41:56,731 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:41:56,731 INFO L299 CfgBuilder]: Removed 188 assume(true) statements. [2021-11-03 03:41:56,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:41:56 BoogieIcfgContainer [2021-11-03 03:41:56,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:41:56,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:41:56,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:41:56,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:41:56,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:41:47" (1/3) ... [2021-11-03 03:41:56,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7701890e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:41:56, skipping insertion in model container [2021-11-03 03:41:56,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:49" (2/3) ... [2021-11-03 03:41:56,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7701890e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:41:56, skipping insertion in model container [2021-11-03 03:41:56,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:41:56" (3/3) ... [2021-11-03 03:41:56,742 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-03 03:41:56,747 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:41:56,747 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 03:41:56,796 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:41:56,802 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:41:56,802 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 03:41:56,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 168 states have (on average 1.3988095238095237) internal successors, (235), 173 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:56,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 03:41:56,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:56,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:56,829 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:41:56,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:56,834 INFO L85 PathProgramCache]: Analyzing trace with hash -21777128, now seen corresponding path program 1 times [2021-11-03 03:41:56,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:56,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98249808] [2021-11-03 03:41:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:56,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:56,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:56,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:56,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:41:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:57,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:41:57,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:57,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:57,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:57,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:57,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98249808] [2021-11-03 03:41:57,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98249808] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:57,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:57,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:41:57,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981326007] [2021-11-03 03:41:57,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:41:57,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:57,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:41:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:41:57,455 INFO L87 Difference]: Start difference. First operand has 174 states, 168 states have (on average 1.3988095238095237) internal successors, (235), 173 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:57,513 INFO L93 Difference]: Finished difference Result 344 states and 465 transitions. [2021-11-03 03:41:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:41:57,514 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 03:41:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:57,528 INFO L225 Difference]: With dead ends: 344 [2021-11-03 03:41:57,528 INFO L226 Difference]: Without dead ends: 166 [2021-11-03 03:41:57,533 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:41:57,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-03 03:41:57,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-03 03:41:57,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.31055900621118) internal successors, (211), 165 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:57,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2021-11-03 03:41:57,577 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 17 [2021-11-03 03:41:57,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:57,578 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2021-11-03 03:41:57,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:57,578 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2021-11-03 03:41:57,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 03:41:57,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:57,580 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:57,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:57,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:57,801 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:41:57,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1032894378, now seen corresponding path program 1 times [2021-11-03 03:41:57,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:57,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909637536] [2021-11-03 03:41:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:57,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:57,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:57,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:57,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:41:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:58,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:41:58,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:58,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:58,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:58,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909637536] [2021-11-03 03:41:58,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909637536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:58,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:58,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:41:58,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725123502] [2021-11-03 03:41:58,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:41:58,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:58,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:41:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:41:58,321 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:58,737 INFO L93 Difference]: Finished difference Result 584 states and 761 transitions. [2021-11-03 03:41:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:41:58,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 03:41:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:58,745 INFO L225 Difference]: With dead ends: 584 [2021-11-03 03:41:58,746 INFO L226 Difference]: Without dead ends: 425 [2021-11-03 03:41:58,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:41:58,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-11-03 03:41:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2021-11-03 03:41:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 420 states have (on average 1.3166666666666667) internal successors, (553), 424 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:58,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 553 transitions. [2021-11-03 03:41:58,814 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 553 transitions. Word has length 17 [2021-11-03 03:41:58,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:58,815 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 553 transitions. [2021-11-03 03:41:58,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:58,815 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 553 transitions. [2021-11-03 03:41:58,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 03:41:58,817 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:58,817 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:58,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:59,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:59,032 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:41:59,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:59,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1262223031, now seen corresponding path program 1 times [2021-11-03 03:41:59,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:59,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417351727] [2021-11-03 03:41:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:59,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:59,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:59,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:59,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:41:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:59,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:41:59,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:59,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:59,617 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:59,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417351727] [2021-11-03 03:41:59,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417351727] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:59,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:59,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:41:59,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716595034] [2021-11-03 03:41:59,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:41:59,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:59,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:41:59,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:41:59,623 INFO L87 Difference]: Start difference. First operand 425 states and 553 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:59,815 INFO L93 Difference]: Finished difference Result 1137 states and 1478 transitions. [2021-11-03 03:41:59,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:41:59,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-03 03:41:59,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:59,822 INFO L225 Difference]: With dead ends: 1137 [2021-11-03 03:41:59,822 INFO L226 Difference]: Without dead ends: 719 [2021-11-03 03:41:59,824 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:41:59,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-11-03 03:41:59,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 428. [2021-11-03 03:41:59,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 423 states have (on average 1.3120567375886525) internal successors, (555), 427 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 555 transitions. [2021-11-03 03:41:59,875 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 555 transitions. Word has length 29 [2021-11-03 03:41:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:59,876 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 555 transitions. [2021-11-03 03:41:59,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 555 transitions. [2021-11-03 03:41:59,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 03:41:59,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:59,878 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:59,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:00,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:00,099 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:00,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:00,100 INFO L85 PathProgramCache]: Analyzing trace with hash 512843913, now seen corresponding path program 1 times [2021-11-03 03:42:00,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:00,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529222319] [2021-11-03 03:42:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:00,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:00,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:00,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:00,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:42:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:00,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:42:00,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:00,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:01,120 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:01,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529222319] [2021-11-03 03:42:01,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529222319] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:01,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:01,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 03:42:01,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380365031] [2021-11-03 03:42:01,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:42:01,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:01,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:42:01,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:42:01,122 INFO L87 Difference]: Start difference. First operand 428 states and 555 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:01,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:01,297 INFO L93 Difference]: Finished difference Result 1268 states and 1650 transitions. [2021-11-03 03:42:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:42:01,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-03 03:42:01,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:01,303 INFO L225 Difference]: With dead ends: 1268 [2021-11-03 03:42:01,303 INFO L226 Difference]: Without dead ends: 847 [2021-11-03 03:42:01,304 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:42:01,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-03 03:42:01,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 835. [2021-11-03 03:42:01,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 830 states have (on average 1.3096385542168674) internal successors, (1087), 834 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1087 transitions. [2021-11-03 03:42:01,383 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1087 transitions. Word has length 29 [2021-11-03 03:42:01,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:01,384 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 1087 transitions. [2021-11-03 03:42:01,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:01,384 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1087 transitions. [2021-11-03 03:42:01,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-03 03:42:01,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:01,386 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:01,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-03 03:42:01,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:01,602 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:01,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:01,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1281701350, now seen corresponding path program 1 times [2021-11-03 03:42:01,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:01,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896701344] [2021-11-03 03:42:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:01,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:01,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:01,609 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:01,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:42:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:02,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:42:02,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:02,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:02,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:02,761 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:02,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896701344] [2021-11-03 03:42:02,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896701344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:02,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:02,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 03:42:02,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106484394] [2021-11-03 03:42:02,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:42:02,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:02,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:42:02,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:42:02,763 INFO L87 Difference]: Start difference. First operand 835 states and 1087 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:02,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:02,841 INFO L93 Difference]: Finished difference Result 835 states and 1087 transitions. [2021-11-03 03:42:02,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:42:02,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-03 03:42:02,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:02,847 INFO L225 Difference]: With dead ends: 835 [2021-11-03 03:42:02,847 INFO L226 Difference]: Without dead ends: 833 [2021-11-03 03:42:02,849 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:42:02,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2021-11-03 03:42:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2021-11-03 03:42:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 829 states have (on average 1.3088057901085646) internal successors, (1085), 832 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:02,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1085 transitions. [2021-11-03 03:42:02,926 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1085 transitions. Word has length 30 [2021-11-03 03:42:02,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:02,927 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 1085 transitions. [2021-11-03 03:42:02,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:02,928 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1085 transitions. [2021-11-03 03:42:02,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 03:42:02,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:02,933 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:02,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:03,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:03,150 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:03,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:03,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1078029645, now seen corresponding path program 1 times [2021-11-03 03:42:03,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:03,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976873800] [2021-11-03 03:42:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:03,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:03,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:03,153 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:03,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:42:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:03,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:42:03,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:03,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:03,913 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:03,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976873800] [2021-11-03 03:42:03,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976873800] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:03,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:03,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:42:03,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856867487] [2021-11-03 03:42:03,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:42:03,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:03,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:42:03,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:42:03,915 INFO L87 Difference]: Start difference. First operand 833 states and 1085 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:03,999 INFO L93 Difference]: Finished difference Result 833 states and 1085 transitions. [2021-11-03 03:42:03,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:42:04,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-03 03:42:04,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:04,005 INFO L225 Difference]: With dead ends: 833 [2021-11-03 03:42:04,005 INFO L226 Difference]: Without dead ends: 831 [2021-11-03 03:42:04,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:42:04,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2021-11-03 03:42:04,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 831. [2021-11-03 03:42:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 828 states have (on average 1.3079710144927537) internal successors, (1083), 830 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:04,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1083 transitions. [2021-11-03 03:42:04,080 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1083 transitions. Word has length 31 [2021-11-03 03:42:04,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:04,080 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1083 transitions. [2021-11-03 03:42:04,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1083 transitions. [2021-11-03 03:42:04,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-03 03:42:04,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:04,082 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:04,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:04,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:04,295 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:04,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:04,295 INFO L85 PathProgramCache]: Analyzing trace with hash 940825924, now seen corresponding path program 1 times [2021-11-03 03:42:04,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:04,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248365020] [2021-11-03 03:42:04,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:04,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:04,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:04,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:04,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:42:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:04,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:42:04,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:04,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:05,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:05,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:05,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248365020] [2021-11-03 03:42:05,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248365020] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:05,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:05,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:42:05,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042471251] [2021-11-03 03:42:05,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:42:05,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:05,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:42:05,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:42:05,053 INFO L87 Difference]: Start difference. First operand 831 states and 1083 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:05,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:05,159 INFO L93 Difference]: Finished difference Result 831 states and 1083 transitions. [2021-11-03 03:42:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:42:05,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-03 03:42:05,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:05,165 INFO L225 Difference]: With dead ends: 831 [2021-11-03 03:42:05,166 INFO L226 Difference]: Without dead ends: 829 [2021-11-03 03:42:05,167 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:42:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2021-11-03 03:42:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2021-11-03 03:42:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 827 states have (on average 1.3071342200725513) internal successors, (1081), 828 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1081 transitions. [2021-11-03 03:42:05,244 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1081 transitions. Word has length 32 [2021-11-03 03:42:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:05,245 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1081 transitions. [2021-11-03 03:42:05,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1081 transitions. [2021-11-03 03:42:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 03:42:05,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:05,246 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:05,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:05,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:05,462 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:05,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash -899160867, now seen corresponding path program 1 times [2021-11-03 03:42:05,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:05,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587482424] [2021-11-03 03:42:05,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:05,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:05,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:05,465 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:05,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:42:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:05,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:42:05,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:06,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:06,247 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:06,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587482424] [2021-11-03 03:42:06,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587482424] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:06,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:06,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:42:06,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381452056] [2021-11-03 03:42:06,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:42:06,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:06,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:42:06,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:42:06,249 INFO L87 Difference]: Start difference. First operand 829 states and 1081 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:06,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:06,343 INFO L93 Difference]: Finished difference Result 829 states and 1081 transitions. [2021-11-03 03:42:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:42:06,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-03 03:42:06,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:06,353 INFO L225 Difference]: With dead ends: 829 [2021-11-03 03:42:06,354 INFO L226 Difference]: Without dead ends: 820 [2021-11-03 03:42:06,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:42:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-11-03 03:42:06,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2021-11-03 03:42:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 1.3064713064713065) internal successors, (1070), 819 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1070 transitions. [2021-11-03 03:42:06,428 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1070 transitions. Word has length 33 [2021-11-03 03:42:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:06,429 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1070 transitions. [2021-11-03 03:42:06,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:06,429 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1070 transitions. [2021-11-03 03:42:06,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 03:42:06,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:06,437 INFO L513 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] [2021-11-03 03:42:06,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:06,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:06,652 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:06,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:06,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1288304928, now seen corresponding path program 1 times [2021-11-03 03:42:06,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:06,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995197024] [2021-11-03 03:42:06,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:06,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:06,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:06,656 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:06,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:42:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:07,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:42:07,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:07,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:07,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:07,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995197024] [2021-11-03 03:42:07,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995197024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:07,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:07,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:42:07,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283834907] [2021-11-03 03:42:07,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:42:07,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:07,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:42:07,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:42:07,743 INFO L87 Difference]: Start difference. First operand 820 states and 1070 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:07,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:07,891 INFO L93 Difference]: Finished difference Result 1717 states and 2255 transitions. [2021-11-03 03:42:07,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:42:07,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-03 03:42:07,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:07,897 INFO L225 Difference]: With dead ends: 1717 [2021-11-03 03:42:07,898 INFO L226 Difference]: Without dead ends: 904 [2021-11-03 03:42:07,899 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:42:07,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-11-03 03:42:07,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 883. [2021-11-03 03:42:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.3151927437641724) internal successors, (1160), 882 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:07,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1160 transitions. [2021-11-03 03:42:07,977 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1160 transitions. Word has length 86 [2021-11-03 03:42:07,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:07,977 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1160 transitions. [2021-11-03 03:42:07,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:07,978 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1160 transitions. [2021-11-03 03:42:07,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 03:42:07,980 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:07,980 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-03 03:42:08,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:08,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:08,200 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:08,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:08,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1355240599, now seen corresponding path program 1 times [2021-11-03 03:42:08,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:08,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209605944] [2021-11-03 03:42:08,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:08,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:08,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:08,202 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:08,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:42:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:08,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:42:08,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:09,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:09,521 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:09,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209605944] [2021-11-03 03:42:09,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209605944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:09,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:09,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:42:09,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43732452] [2021-11-03 03:42:09,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:42:09,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:09,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:42:09,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:42:09,523 INFO L87 Difference]: Start difference. First operand 883 states and 1160 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:09,863 INFO L93 Difference]: Finished difference Result 2407 states and 3160 transitions. [2021-11-03 03:42:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:42:09,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-03 03:42:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:09,873 INFO L225 Difference]: With dead ends: 2407 [2021-11-03 03:42:09,874 INFO L226 Difference]: Without dead ends: 1519 [2021-11-03 03:42:09,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:42:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-11-03 03:42:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 883. [2021-11-03 03:42:09,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.308390022675737) internal successors, (1154), 882 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1154 transitions. [2021-11-03 03:42:09,958 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1154 transitions. Word has length 94 [2021-11-03 03:42:09,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:09,958 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1154 transitions. [2021-11-03 03:42:09,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:09,959 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1154 transitions. [2021-11-03 03:42:09,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 03:42:09,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:09,961 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-03 03:42:09,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:10,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:10,182 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:10,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:10,182 INFO L85 PathProgramCache]: Analyzing trace with hash -764148219, now seen corresponding path program 1 times [2021-11-03 03:42:10,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:10,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213262960] [2021-11-03 03:42:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:10,183 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:10,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:10,184 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:10,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:42:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:10,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:42:10,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:11,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:11,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:11,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:11,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213262960] [2021-11-03 03:42:11,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213262960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:11,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:11,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:42:11,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000264646] [2021-11-03 03:42:11,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:42:11,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:11,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:42:11,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:11,359 INFO L87 Difference]: Start difference. First operand 883 states and 1154 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:11,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:11,578 INFO L93 Difference]: Finished difference Result 2659 states and 3522 transitions. [2021-11-03 03:42:11,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:42:11,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-03 03:42:11,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:11,591 INFO L225 Difference]: With dead ends: 2659 [2021-11-03 03:42:11,591 INFO L226 Difference]: Without dead ends: 1783 [2021-11-03 03:42:11,593 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:42:11,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2021-11-03 03:42:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 901. [2021-11-03 03:42:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 900 states have (on average 1.3022222222222222) internal successors, (1172), 900 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:11,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1172 transitions. [2021-11-03 03:42:11,752 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1172 transitions. Word has length 96 [2021-11-03 03:42:11,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:11,752 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1172 transitions. [2021-11-03 03:42:11,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:11,753 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1172 transitions. [2021-11-03 03:42:11,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 03:42:11,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:11,756 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-03 03:42:11,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:11,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:11,972 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:11,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash -369507124, now seen corresponding path program 1 times [2021-11-03 03:42:11,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:11,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580838822] [2021-11-03 03:42:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:11,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:11,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:11,974 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:11,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 03:42:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:12,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:42:12,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:13,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:13,394 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:13,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:13,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580838822] [2021-11-03 03:42:13,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580838822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:13,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:13,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-03 03:42:13,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030786240] [2021-11-03 03:42:13,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:42:13,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:42:13,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:42:13,397 INFO L87 Difference]: Start difference. First operand 901 states and 1172 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:13,741 INFO L93 Difference]: Finished difference Result 2824 states and 3677 transitions. [2021-11-03 03:42:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:42:13,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-03 03:42:13,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:13,753 INFO L225 Difference]: With dead ends: 2824 [2021-11-03 03:42:13,753 INFO L226 Difference]: Without dead ends: 1930 [2021-11-03 03:42:13,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:42:13,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2021-11-03 03:42:13,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 901. [2021-11-03 03:42:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 900 states have (on average 1.2955555555555556) internal successors, (1166), 900 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1166 transitions. [2021-11-03 03:42:13,891 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1166 transitions. Word has length 98 [2021-11-03 03:42:13,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:13,891 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1166 transitions. [2021-11-03 03:42:13,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1166 transitions. [2021-11-03 03:42:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 03:42:13,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:13,894 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-03 03:42:13,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:14,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:14,117 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:14,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:14,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1248343951, now seen corresponding path program 1 times [2021-11-03 03:42:14,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:14,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420740484] [2021-11-03 03:42:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:14,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:14,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:14,120 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:14,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 03:42:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:14,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 03:42:14,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:15,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:15,868 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:15,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420740484] [2021-11-03 03:42:15,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420740484] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:15,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:15,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-03 03:42:15,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522794975] [2021-11-03 03:42:15,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:42:15,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:15,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:42:15,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:42:15,872 INFO L87 Difference]: Start difference. First operand 901 states and 1166 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:26,367 INFO L93 Difference]: Finished difference Result 4483 states and 5876 transitions. [2021-11-03 03:42:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:42:26,369 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-03 03:42:26,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:26,388 INFO L225 Difference]: With dead ends: 4483 [2021-11-03 03:42:26,389 INFO L226 Difference]: Without dead ends: 3589 [2021-11-03 03:42:26,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2021-11-03 03:42:26,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2021-11-03 03:42:26,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 979. [2021-11-03 03:42:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 978 states have (on average 1.278118609406953) internal successors, (1250), 978 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1250 transitions. [2021-11-03 03:42:26,589 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1250 transitions. Word has length 98 [2021-11-03 03:42:26,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:26,590 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1250 transitions. [2021-11-03 03:42:26,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1250 transitions. [2021-11-03 03:42:26,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 03:42:26,592 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:26,592 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-03 03:42:26,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:26,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:26,808 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:26,808 INFO L85 PathProgramCache]: Analyzing trace with hash 471320043, now seen corresponding path program 1 times [2021-11-03 03:42:26,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:26,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668327788] [2021-11-03 03:42:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:26,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:26,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:26,810 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:26,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 03:42:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:27,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 03:42:27,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:28,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:28,486 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:28,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668327788] [2021-11-03 03:42:28,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668327788] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:28,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:28,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-03 03:42:28,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127560525] [2021-11-03 03:42:28,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 03:42:28,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 03:42:28,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-03 03:42:28,489 INFO L87 Difference]: Start difference. First operand 979 states and 1250 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:35,854 INFO L93 Difference]: Finished difference Result 3421 states and 4416 transitions. [2021-11-03 03:42:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 03:42:35,855 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-03 03:42:35,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:35,868 INFO L225 Difference]: With dead ends: 3421 [2021-11-03 03:42:35,868 INFO L226 Difference]: Without dead ends: 2449 [2021-11-03 03:42:35,871 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:42:35,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2021-11-03 03:42:36,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 979. [2021-11-03 03:42:36,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 978 states have (on average 1.278118609406953) internal successors, (1250), 978 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1250 transitions. [2021-11-03 03:42:36,055 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1250 transitions. Word has length 100 [2021-11-03 03:42:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:36,055 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1250 transitions. [2021-11-03 03:42:36,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1250 transitions. [2021-11-03 03:42:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-03 03:42:36,058 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:36,058 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-03 03:42:36,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:36,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:36,272 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:36,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:36,272 INFO L85 PathProgramCache]: Analyzing trace with hash -117528049, now seen corresponding path program 1 times [2021-11-03 03:42:36,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:36,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355731223] [2021-11-03 03:42:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:36,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:36,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:36,274 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:36,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 03:42:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:37,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 03:42:37,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:37,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:37,801 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:37,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355731223] [2021-11-03 03:42:37,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355731223] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:37,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:37,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2021-11-03 03:42:37,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760145396] [2021-11-03 03:42:37,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 03:42:37,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:37,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 03:42:37,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:42:37,803 INFO L87 Difference]: Start difference. First operand 979 states and 1250 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:38,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:38,734 INFO L93 Difference]: Finished difference Result 3547 states and 4554 transitions. [2021-11-03 03:42:38,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:42:38,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-03 03:42:38,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:38,749 INFO L225 Difference]: With dead ends: 3547 [2021-11-03 03:42:38,749 INFO L226 Difference]: Without dead ends: 2575 [2021-11-03 03:42:38,752 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:42:38,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2021-11-03 03:42:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 997. [2021-11-03 03:42:38,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2730923694779117) internal successors, (1268), 996 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1268 transitions. [2021-11-03 03:42:38,943 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1268 transitions. Word has length 102 [2021-11-03 03:42:38,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:38,943 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1268 transitions. [2021-11-03 03:42:38,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:38,944 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1268 transitions. [2021-11-03 03:42:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 03:42:38,946 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:38,946 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-03 03:42:38,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:39,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:39,164 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:39,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:39,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1953912331, now seen corresponding path program 1 times [2021-11-03 03:42:39,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:39,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812715245] [2021-11-03 03:42:39,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:39,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:39,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:39,167 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:39,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 03:42:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:40,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:42:40,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:40,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:40,688 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:40,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812715245] [2021-11-03 03:42:40,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812715245] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:40,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:40,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:42:40,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480585122] [2021-11-03 03:42:40,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:42:40,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:42:40,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:42:40,690 INFO L87 Difference]: Start difference. First operand 997 states and 1268 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:41,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:41,530 INFO L93 Difference]: Finished difference Result 4897 states and 6266 transitions. [2021-11-03 03:42:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:42:41,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-03 03:42:41,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:41,550 INFO L225 Difference]: With dead ends: 4897 [2021-11-03 03:42:41,551 INFO L226 Difference]: Without dead ends: 3907 [2021-11-03 03:42:41,553 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:42:41,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2021-11-03 03:42:41,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 1021. [2021-11-03 03:42:41,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1020 states have (on average 1.272549019607843) internal successors, (1298), 1020 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1298 transitions. [2021-11-03 03:42:41,808 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1298 transitions. Word has length 104 [2021-11-03 03:42:41,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:41,808 INFO L470 AbstractCegarLoop]: Abstraction has 1021 states and 1298 transitions. [2021-11-03 03:42:41,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:41,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1298 transitions. [2021-11-03 03:42:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 03:42:41,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:41,811 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-03 03:42:41,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:42,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:42,028 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:42,028 INFO L85 PathProgramCache]: Analyzing trace with hash 231759783, now seen corresponding path program 1 times [2021-11-03 03:42:42,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:42,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320437712] [2021-11-03 03:42:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:42,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:42,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:42,031 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:42,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 03:42:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:43,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 03:42:43,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:43,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:44,230 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:44,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320437712] [2021-11-03 03:42:44,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320437712] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:44,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:44,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-11-03 03:42:44,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790424384] [2021-11-03 03:42:44,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:42:44,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:44,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:42:44,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:42:44,232 INFO L87 Difference]: Start difference. First operand 1021 states and 1298 transitions. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:52,887 INFO L93 Difference]: Finished difference Result 5329 states and 6870 transitions. [2021-11-03 03:42:52,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-03 03:42:52,889 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-03 03:42:52,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:52,910 INFO L225 Difference]: With dead ends: 5329 [2021-11-03 03:42:52,910 INFO L226 Difference]: Without dead ends: 4315 [2021-11-03 03:42:52,912 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 03:42:52,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2021-11-03 03:42:53,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 1018. [2021-11-03 03:42:53,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 1017 states have (on average 1.264503441494592) internal successors, (1286), 1017 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:53,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1286 transitions. [2021-11-03 03:42:53,222 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1286 transitions. Word has length 106 [2021-11-03 03:42:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:53,223 INFO L470 AbstractCegarLoop]: Abstraction has 1018 states and 1286 transitions. [2021-11-03 03:42:53,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1286 transitions. [2021-11-03 03:42:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 03:42:53,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:53,226 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:53,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:53,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:53,443 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:53,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:53,443 INFO L85 PathProgramCache]: Analyzing trace with hash 724724784, now seen corresponding path program 1 times [2021-11-03 03:42:53,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:53,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302857601] [2021-11-03 03:42:53,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:53,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:53,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:53,445 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:53,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 03:42:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:54,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:42:54,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:55,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:55,557 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:55,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302857601] [2021-11-03 03:42:55,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302857601] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:55,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:55,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:42:55,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435308720] [2021-11-03 03:42:55,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:42:55,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:55,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:42:55,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:42:55,559 INFO L87 Difference]: Start difference. First operand 1018 states and 1286 transitions. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:56,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:56,123 INFO L93 Difference]: Finished difference Result 3598 states and 4602 transitions. [2021-11-03 03:42:56,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:42:56,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-03 03:42:56,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:56,131 INFO L225 Difference]: With dead ends: 3598 [2021-11-03 03:42:56,132 INFO L226 Difference]: Without dead ends: 2587 [2021-11-03 03:42:56,134 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:42:56,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2021-11-03 03:42:56,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 1411. [2021-11-03 03:42:56,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 1.2609929078014184) internal successors, (1778), 1410 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:56,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1778 transitions. [2021-11-03 03:42:56,459 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1778 transitions. Word has length 122 [2021-11-03 03:42:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:56,460 INFO L470 AbstractCegarLoop]: Abstraction has 1411 states and 1778 transitions. [2021-11-03 03:42:56,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:56,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1778 transitions. [2021-11-03 03:42:56,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 03:42:56,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:56,463 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:56,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:56,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:56,688 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:56,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:56,688 INFO L85 PathProgramCache]: Analyzing trace with hash -964218958, now seen corresponding path program 1 times [2021-11-03 03:42:56,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:56,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988568248] [2021-11-03 03:42:56,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:56,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:56,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:56,690 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:56,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 03:42:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:58,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:42:58,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:58,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:42:58,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:58,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988568248] [2021-11-03 03:42:58,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988568248] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:58,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:58,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:42:58,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720980290] [2021-11-03 03:42:58,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:42:58,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:58,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:42:58,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:42:58,509 INFO L87 Difference]: Start difference. First operand 1411 states and 1778 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:59,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:59,142 INFO L93 Difference]: Finished difference Result 4495 states and 5693 transitions. [2021-11-03 03:42:59,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:42:59,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-03 03:42:59,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:59,156 INFO L225 Difference]: With dead ends: 4495 [2021-11-03 03:42:59,156 INFO L226 Difference]: Without dead ends: 3091 [2021-11-03 03:42:59,159 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3091 states. [2021-11-03 03:42:59,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3091 to 1423. [2021-11-03 03:42:59,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 1.258790436005626) internal successors, (1790), 1422 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1790 transitions. [2021-11-03 03:42:59,481 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1790 transitions. Word has length 122 [2021-11-03 03:42:59,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:59,481 INFO L470 AbstractCegarLoop]: Abstraction has 1423 states and 1790 transitions. [2021-11-03 03:42:59,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1790 transitions. [2021-11-03 03:42:59,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 03:42:59,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:59,485 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:59,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:59,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:59,700 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:59,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:59,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1665283536, now seen corresponding path program 1 times [2021-11-03 03:42:59,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:59,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779308] [2021-11-03 03:42:59,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:59,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:59,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:59,702 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:59,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-03 03:43:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:01,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:43:01,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:43:01,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:43:02,162 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:43:02,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779308] [2021-11-03 03:43:02,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779308] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:43:02,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [174643139] [2021-11-03 03:43:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:02,163 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:43:02,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:43:02,165 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:43:02,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-03 03:43:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:03,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:43:03,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:43:03,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:43:04,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [174643139] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:43:04,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933756957] [2021-11-03 03:43:04,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:04,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:43:04,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:43:04,478 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:43:04,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-03 03:43:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:05,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:43:05,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:43:06,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 03:43:06,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933756957] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:43:06,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:43:06,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-11-03 03:43:06,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003861529] [2021-11-03 03:43:06,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:43:06,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:43:06,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:43:06,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:43:06,857 INFO L87 Difference]: Start difference. First operand 1423 states and 1790 transitions. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:09,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:09,559 INFO L93 Difference]: Finished difference Result 8498 states and 10699 transitions. [2021-11-03 03:43:09,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:43:09,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-03 03:43:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:09,574 INFO L225 Difference]: With dead ends: 8498 [2021-11-03 03:43:09,575 INFO L226 Difference]: Without dead ends: 8493 [2021-11-03 03:43:09,577 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:43:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8493 states. [2021-11-03 03:43:11,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8493 to 8307. [2021-11-03 03:43:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8307 states, 8306 states have (on average 1.2622200818685287) internal successors, (10484), 8306 states have internal predecessors, (10484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8307 states to 8307 states and 10484 transitions. [2021-11-03 03:43:11,272 INFO L78 Accepts]: Start accepts. Automaton has 8307 states and 10484 transitions. Word has length 122 [2021-11-03 03:43:11,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:11,272 INFO L470 AbstractCegarLoop]: Abstraction has 8307 states and 10484 transitions. [2021-11-03 03:43:11,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:11,273 INFO L276 IsEmpty]: Start isEmpty. Operand 8307 states and 10484 transitions. [2021-11-03 03:43:11,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 03:43:11,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:11,287 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:11,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:11,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:11,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:11,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:43:11,912 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:43:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:11,912 INFO L85 PathProgramCache]: Analyzing trace with hash -627310470, now seen corresponding path program 1 times [2021-11-03 03:43:11,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:43:11,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713294966] [2021-11-03 03:43:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:11,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:43:11,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:43:11,916 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:43:11,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d68bca-aeec-48d3-ab4a-de872e964609/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-03 03:43:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:15,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-03 03:43:15,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:15,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:43:15,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-03 03:43:15,849 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 03:43:15,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 47 [2021-11-03 03:43:15,882 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-03 03:43:15,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2021-11-03 03:43:16,930 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-03 03:43:16,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 62 [2021-11-03 03:43:18,242 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-03 03:43:18,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 79 [2021-11-03 03:43:20,171 INFO L354 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2021-11-03 03:43:20,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 98 treesize of output 102 [2021-11-03 03:43:44,837 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-03 03:43:44,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 47 [2021-11-03 03:43:44,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-11-03 03:43:45,688 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-03 03:43:45,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 47 [2021-11-03 03:43:45,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-11-03 03:43:45,773 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:43:45,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-03 03:43:45,842 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-03 03:43:45,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 60 [2021-11-03 03:43:45,882 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-03 03:43:45,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2021-11-03 03:43:48,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:43:48,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3779 [2021-11-03 03:43:48,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:43:48,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4139