./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:55:07,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:55:07,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:55:07,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:55:07,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:55:07,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:55:07,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:55:07,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:55:07,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:55:07,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:55:07,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:55:07,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:55:07,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:55:07,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:55:07,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:55:07,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:55:07,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:55:07,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:55:07,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:55:07,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:55:07,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:55:07,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:55:07,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:55:07,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:55:07,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:55:07,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:55:07,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:55:07,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:55:07,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:55:07,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:55:07,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:55:07,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:55:07,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:55:07,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:55:07,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:55:07,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:55:07,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:55:07,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:55:07,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:55:07,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:55:07,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:55:07,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:55:07,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:55:07,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:55:07,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:55:07,631 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:55:07,631 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:55:07,631 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:55:07,632 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:55:07,632 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:55:07,638 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:55:07,638 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:55:07,639 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:55:07,640 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:55:07,640 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:55:07,640 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:55:07,640 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:55:07,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:55:07,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:55:07,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:55:07,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:55:07,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:55:07,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:55:07,642 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:55:07,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:55:07,643 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:55:07,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:55:07,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:55:07,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:55:07,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:55:07,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:55:07,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:55:07,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:55:07,646 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:55:07,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:55:07,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:55:07,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:55:07,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:55:07,647 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_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2021-11-07 00:55:07,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:55:08,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:55:08,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:55:08,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:55:08,010 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:55:08,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2021-11-07 00:55:08,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/data/f296388d6/26d5f4f738c94b2ab2f36615664ebee8/FLAGfa7fa8139 [2021-11-07 00:55:08,873 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:55:08,873 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2021-11-07 00:55:08,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/data/f296388d6/26d5f4f738c94b2ab2f36615664ebee8/FLAGfa7fa8139 [2021-11-07 00:55:09,404 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/data/f296388d6/26d5f4f738c94b2ab2f36615664ebee8 [2021-11-07 00:55:09,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:55:09,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:55:09,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:55:09,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:55:09,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:55:09,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:09" (1/1) ... [2021-11-07 00:55:09,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2986d62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:09, skipping insertion in model container [2021-11-07 00:55:09,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:09" (1/1) ... [2021-11-07 00:55:09,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:55:09,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:55:10,797 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_e17841da-d6fa-4a73-bce7-70839fb8e57d/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2021-11-07 00:55:10,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:55:10,874 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 00:55:10,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@22d26c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:10, skipping insertion in model container [2021-11-07 00:55:10,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:55:10,876 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:55:10,879 INFO L168 Benchmark]: Toolchain (without parser) took 1467.43 ms. Allocated memory was 117.4 MB in the beginning and 163.6 MB in the end (delta: 46.1 MB). Free memory was 79.0 MB in the beginning and 89.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 38.2 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:10,880 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 117.4 MB. Free memory is still 70.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:55:10,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1463.25 ms. Allocated memory was 117.4 MB in the beginning and 163.6 MB in the end (delta: 46.1 MB). Free memory was 78.7 MB in the beginning and 89.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 38.2 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:10,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 117.4 MB. Free memory is still 70.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1463.25 ms. Allocated memory was 117.4 MB in the beginning and 163.6 MB in the end (delta: 46.1 MB). Free memory was 78.7 MB in the beginning and 89.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 38.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3463]: 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_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:55:13,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:55:13,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:55:13,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:55:13,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:55:13,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:55:13,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:55:13,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:55:13,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:55:13,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:55:13,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:55:13,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:55:13,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:55:13,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:55:13,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:55:13,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:55:13,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:55:13,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:55:13,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:55:13,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:55:13,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:55:13,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:55:13,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:55:13,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:55:13,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:55:13,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:55:13,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:55:13,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:55:13,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:55:13,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:55:13,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:55:13,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:55:13,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:55:13,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:55:13,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:55:13,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:55:13,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:55:13,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:55:13,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:55:13,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:55:13,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:55:13,444 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:55:13,486 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:55:13,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:55:13,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:55:13,488 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:55:13,489 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:55:13,489 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:55:13,489 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:55:13,489 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:55:13,489 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:55:13,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:55:13,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:55:13,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:55:13,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:55:13,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:55:13,494 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:55:13,494 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:55:13,494 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:55:13,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:55:13,494 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:55:13,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:55:13,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:55:13,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:55:13,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:55:13,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:55:13,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:55:13,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:55:13,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:55:13,497 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:55:13,497 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:13,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:55:13,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:55:13,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:55:13,498 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_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2021-11-07 00:55:13,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:55:13,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:55:13,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:55:13,910 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:55:13,911 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:55:13,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2021-11-07 00:55:14,007 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/data/ed2b8ee6a/767c79631cc54afe8762bddea9548b57/FLAGb27597670 [2021-11-07 00:55:15,041 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:55:15,042 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2021-11-07 00:55:15,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/data/ed2b8ee6a/767c79631cc54afe8762bddea9548b57/FLAGb27597670 [2021-11-07 00:55:15,472 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/data/ed2b8ee6a/767c79631cc54afe8762bddea9548b57 [2021-11-07 00:55:15,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:55:15,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:55:15,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:55:15,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:55:15,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:55:15,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:15" (1/1) ... [2021-11-07 00:55:15,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b2ccab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:15, skipping insertion in model container [2021-11-07 00:55:15,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:15" (1/1) ... [2021-11-07 00:55:15,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:55:15,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:55:16,987 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_e17841da-d6fa-4a73-bce7-70839fb8e57d/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2021-11-07 00:55:17,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:55:17,076 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:55:17,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:55:17,489 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_e17841da-d6fa-4a73-bce7-70839fb8e57d/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2021-11-07 00:55:17,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:55:17,544 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:55:17,960 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_e17841da-d6fa-4a73-bce7-70839fb8e57d/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2021-11-07 00:55:17,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:55:18,040 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:55:18,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18 WrapperNode [2021-11-07 00:55:18,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:55:18,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:55:18,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:55:18,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:55:18,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2021-11-07 00:55:18,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2021-11-07 00:55:19,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:55:19,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:55:19,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:55:19,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:55:19,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2021-11-07 00:55:19,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2021-11-07 00:55:19,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2021-11-07 00:55:19,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2021-11-07 00:55:20,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2021-11-07 00:55:20,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2021-11-07 00:55:20,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2021-11-07 00:55:20,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:55:20,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:55:20,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:55:20,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:55:20,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2021-11-07 00:55:20,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:55:20,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:20,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:55:20,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:55:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:55:20,884 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_recsrc2 [2021-11-07 00:55:20,884 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_recsrc2 [2021-11-07 00:55:20,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 00:55:20,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:55:20,884 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 00:55:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:55:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:55:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 00:55:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 00:55:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 00:55:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:55:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:55:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:55:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:55:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 00:55:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 00:55:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 00:55:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:55:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-07 00:55:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:55:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 00:55:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:55:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:59:18,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:59:18,203 INFO L299 CfgBuilder]: Removed 8088 assume(true) statements. [2021-11-07 00:59:18,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:18 BoogieIcfgContainer [2021-11-07 00:59:18,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:59:18,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:59:18,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:59:18,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:59:18,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:55:15" (1/3) ... [2021-11-07 00:59:18,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5d66bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:18, skipping insertion in model container [2021-11-07 00:59:18,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (2/3) ... [2021-11-07 00:59:18,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5d66bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:18, skipping insertion in model container [2021-11-07 00:59:18,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:18" (3/3) ... [2021-11-07 00:59:18,226 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2021-11-07 00:59:18,232 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:59:18,232 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2021-11-07 00:59:18,331 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:59:18,338 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 00:59:18,339 INFO L340 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2021-11-07 00:59:18,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 9717 states, 9418 states have (on average 1.5478870248460395) internal successors, (14578), 9623 states have internal predecessors, (14578), 91 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2021-11-07 00:59:18,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 00:59:18,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:18,506 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:18,507 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr202ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 00:59:18,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:18,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1324306972, now seen corresponding path program 1 times [2021-11-07 00:59:18,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:18,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997704964] [2021-11-07 00:59:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:18,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:18,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:18,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:18,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:59:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:20,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:59:20,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:20,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:20,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:20,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997704964] [2021-11-07 00:59:20,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997704964] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:20,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:20,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:59:20,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867038310] [2021-11-07 00:59:20,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:59:20,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:59:21,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:59:21,036 INFO L87 Difference]: Start difference. First operand has 9717 states, 9418 states have (on average 1.5478870248460395) internal successors, (14578), 9623 states have internal predecessors, (14578), 91 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:22,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:22,287 INFO L93 Difference]: Finished difference Result 14747 states and 21782 transitions. [2021-11-07 00:59:22,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:59:22,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 8 [2021-11-07 00:59:22,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:22,336 INFO L225 Difference]: With dead ends: 14747 [2021-11-07 00:59:22,337 INFO L226 Difference]: Without dead ends: 5029 [2021-11-07 00:59:22,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:59:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2021-11-07 00:59:22,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 4919. [2021-11-07 00:59:22,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4919 states, 4609 states have (on average 1.3178563679756998) internal successors, (6074), 4813 states have internal predecessors, (6074), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-07 00:59:22,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4919 states to 4919 states and 6280 transitions. [2021-11-07 00:59:22,674 INFO L78 Accepts]: Start accepts. Automaton has 4919 states and 6280 transitions. Word has length 8 [2021-11-07 00:59:22,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:22,675 INFO L470 AbstractCegarLoop]: Abstraction has 4919 states and 6280 transitions. [2021-11-07 00:59:22,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:22,675 INFO L276 IsEmpty]: Start isEmpty. Operand 4919 states and 6280 transitions. [2021-11-07 00:59:22,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 00:59:22,676 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:22,677 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:22,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 00:59:22,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:22,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr202ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 00:59:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1799148616, now seen corresponding path program 1 times [2021-11-07 00:59:22,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:22,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544707215] [2021-11-07 00:59:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:22,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:22,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:22,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:22,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:59:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:24,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:59:24,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:25,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:26,586 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:26,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544707215] [2021-11-07 00:59:26,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544707215] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:59:26,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [362245918] [2021-11-07 00:59:26,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:26,587 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:59:26,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:59:26,603 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:59:26,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 00:59:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:27,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:59:27,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:59:29,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:59:30,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [362245918] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:30,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:59:30,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 00:59:30,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096380734] [2021-11-07 00:59:30,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:59:30,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:30,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:59:30,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:59:30,147 INFO L87 Difference]: Start difference. First operand 4919 states and 6280 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:45,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:45,197 INFO L93 Difference]: Finished difference Result 5914 states and 7714 transitions. [2021-11-07 00:59:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:59:45,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 00:59:45,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:45,240 INFO L225 Difference]: With dead ends: 5914 [2021-11-07 00:59:45,240 INFO L226 Difference]: Without dead ends: 5843 [2021-11-07 00:59:45,244 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:59:45,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2021-11-07 00:59:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 5808. [2021-11-07 00:59:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5808 states, 5493 states have (on average 1.3455306754050609) internal successors, (7391), 5697 states have internal predecessors, (7391), 106 states have call successors, (106), 4 states have call predecessors, (106), 4 states have return successors, (109), 106 states have call predecessors, (109), 106 states have call successors, (109) [2021-11-07 00:59:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 7606 transitions. [2021-11-07 00:59:45,495 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 7606 transitions. Word has length 16 [2021-11-07 00:59:45,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:45,496 INFO L470 AbstractCegarLoop]: Abstraction has 5808 states and 7606 transitions. [2021-11-07 00:59:45,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:45,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 7606 transitions. [2021-11-07 00:59:45,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 00:59:45,511 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:45,511 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:45,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:45,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:45,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:59:45,936 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 00:59:45,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:45,937 INFO L85 PathProgramCache]: Analyzing trace with hash -97975189, now seen corresponding path program 1 times [2021-11-07 00:59:45,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:45,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418440413] [2021-11-07 00:59:45,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:45,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:45,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:45,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:45,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:59:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:49,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:59:49,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:50,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:51,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:51,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418440413] [2021-11-07 00:59:51,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418440413] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:51,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:51,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:59:51,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989025209] [2021-11-07 00:59:51,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:59:51,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:51,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:59:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:59:51,976 INFO L87 Difference]: Start difference. First operand 5808 states and 7606 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:52,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:52,959 INFO L93 Difference]: Finished difference Result 14653 states and 19310 transitions. [2021-11-07 00:59:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:59:52,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 00:59:52,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:53,034 INFO L225 Difference]: With dead ends: 14653 [2021-11-07 00:59:53,034 INFO L226 Difference]: Without dead ends: 8885 [2021-11-07 00:59:53,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:59:53,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8885 states. [2021-11-07 00:59:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8885 to 5808. [2021-11-07 00:59:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5808 states, 5493 states have (on average 1.3446204259967232) internal successors, (7386), 5697 states have internal predecessors, (7386), 106 states have call successors, (106), 4 states have call predecessors, (106), 4 states have return successors, (109), 106 states have call predecessors, (109), 106 states have call successors, (109) [2021-11-07 00:59:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 7601 transitions. [2021-11-07 00:59:53,363 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 7601 transitions. Word has length 41 [2021-11-07 00:59:53,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:53,364 INFO L470 AbstractCegarLoop]: Abstraction has 5808 states and 7601 transitions. [2021-11-07 00:59:53,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:53,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 7601 transitions. [2021-11-07 00:59:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 00:59:53,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:53,367 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:53,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:53,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:53,583 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 00:59:53,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:53,584 INFO L85 PathProgramCache]: Analyzing trace with hash -802301968, now seen corresponding path program 1 times [2021-11-07 00:59:53,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:53,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640243591] [2021-11-07 00:59:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:53,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:53,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:53,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:53,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:59:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:55,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:59:55,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:56,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:58,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:58,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640243591] [2021-11-07 00:59:58,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640243591] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:59:58,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1961861909] [2021-11-07 00:59:58,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:58,456 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:59:58,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:59:58,465 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:59:58,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 00:59:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:59,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 00:59:59,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:00:02,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:00:05,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1961861909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:05,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:00:05,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 17 [2021-11-07 01:00:05,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676460975] [2021-11-07 01:00:05,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:00:05,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:00:05,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:00:05,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:00:05,227 INFO L87 Difference]: Start difference. First operand 5808 states and 7601 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:00:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:20,759 INFO L93 Difference]: Finished difference Result 16343 states and 21187 transitions. [2021-11-07 01:00:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:00:20,760 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 01:00:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:20,833 INFO L225 Difference]: With dead ends: 16343 [2021-11-07 01:00:20,833 INFO L226 Difference]: Without dead ends: 12146 [2021-11-07 01:00:20,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:00:20,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12146 states. [2021-11-07 01:00:21,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12146 to 5814. [2021-11-07 01:00:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5814 states, 5499 states have (on average 1.3442444080741953) internal successors, (7392), 5703 states have internal predecessors, (7392), 106 states have call successors, (106), 4 states have call predecessors, (106), 4 states have return successors, (109), 106 states have call predecessors, (109), 106 states have call successors, (109) [2021-11-07 01:00:21,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5814 states to 5814 states and 7607 transitions. [2021-11-07 01:00:21,254 INFO L78 Accepts]: Start accepts. Automaton has 5814 states and 7607 transitions. Word has length 43 [2021-11-07 01:00:21,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:21,255 INFO L470 AbstractCegarLoop]: Abstraction has 5814 states and 7607 transitions. [2021-11-07 01:00:21,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:00:21,256 INFO L276 IsEmpty]: Start isEmpty. Operand 5814 states and 7607 transitions. [2021-11-07 01:00:21,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 01:00:21,260 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:21,262 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:21,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:21,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:00:21,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:00:21,672 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 01:00:21,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:21,673 INFO L85 PathProgramCache]: Analyzing trace with hash -379600142, now seen corresponding path program 1 times [2021-11-07 01:00:21,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:00:21,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349635815] [2021-11-07 01:00:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:21,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:00:21,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:00:21,676 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:00:21,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:00:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:23,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:00:23,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:24,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:24,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:26,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:00:26,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349635815] [2021-11-07 01:00:26,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349635815] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:26,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1647897477] [2021-11-07 01:00:26,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:26,386 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:00:26,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:00:26,388 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:00:26,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:00:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:28,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:00:28,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:29,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:30,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1647897477] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:30,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526958858] [2021-11-07 01:00:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:30,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:30,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:30,296 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:30,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 01:00:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:31,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:00:31,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:00:33,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:00:35,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526958858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:35,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:00:35,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-07 01:00:35,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939719718] [2021-11-07 01:00:35,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:00:35,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:00:35,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:00:35,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:00:35,363 INFO L87 Difference]: Start difference. First operand 5814 states and 7607 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:01:40,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:40,288 INFO L93 Difference]: Finished difference Result 12025 states and 16212 transitions. [2021-11-07 01:01:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:01:40,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 01:01:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:40,331 INFO L225 Difference]: With dead ends: 12025 [2021-11-07 01:01:40,332 INFO L226 Difference]: Without dead ends: 11725 [2021-11-07 01:01:40,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:01:40,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11725 states. [2021-11-07 01:01:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11725 to 11475. [2021-11-07 01:01:40,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11475 states, 11076 states have (on average 1.3314373420007224) internal successors, (14747), 11145 states have internal predecessors, (14747), 252 states have call successors, (252), 14 states have call predecessors, (252), 14 states have return successors, (469), 315 states have call predecessors, (469), 252 states have call successors, (469) [2021-11-07 01:01:40,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11475 states to 11475 states and 15468 transitions. [2021-11-07 01:01:40,973 INFO L78 Accepts]: Start accepts. Automaton has 11475 states and 15468 transitions. Word has length 43 [2021-11-07 01:01:40,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:40,973 INFO L470 AbstractCegarLoop]: Abstraction has 11475 states and 15468 transitions. [2021-11-07 01:01:40,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:01:40,974 INFO L276 IsEmpty]: Start isEmpty. Operand 11475 states and 15468 transitions. [2021-11-07 01:01:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:01:40,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:40,977 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:01:41,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:41,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:41,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-07 01:01:41,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:41,592 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr135ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 01:01:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:41,592 INFO L85 PathProgramCache]: Analyzing trace with hash -308317664, now seen corresponding path program 1 times [2021-11-07 01:01:41,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:01:41,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501677271] [2021-11-07 01:01:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:41,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:01:41,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:01:41,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:01:41,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:01:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:43,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:01:43,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:01:45,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:01:46,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:01:46,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501677271] [2021-11-07 01:01:46,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501677271] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:46,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [545468814] [2021-11-07 01:01:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:46,640 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:46,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:01:46,647 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:01:46,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:01:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:47,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:01:47,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:01:49,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:01:51,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [545468814] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:01:51,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:01:51,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:01:51,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67230725] [2021-11-07 01:01:51,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:01:51,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:01:51,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:01:51,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:01:51,547 INFO L87 Difference]: Start difference. First operand 11475 states and 15468 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:01:55,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:55,172 INFO L93 Difference]: Finished difference Result 11475 states and 15468 transitions. [2021-11-07 01:01:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:01:55,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 01:01:55,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:55,213 INFO L225 Difference]: With dead ends: 11475 [2021-11-07 01:01:55,213 INFO L226 Difference]: Without dead ends: 11367 [2021-11-07 01:01:55,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:01:55,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11367 states. [2021-11-07 01:01:55,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 11320. [2021-11-07 01:01:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11320 states, 10975 states have (on average 1.3219134396355352) internal successors, (14508), 10990 states have internal predecessors, (14508), 252 states have call successors, (252), 14 states have call predecessors, (252), 14 states have return successors, (469), 315 states have call predecessors, (469), 252 states have call successors, (469) [2021-11-07 01:01:55,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11320 states to 11320 states and 15229 transitions. [2021-11-07 01:01:55,875 INFO L78 Accepts]: Start accepts. Automaton has 11320 states and 15229 transitions. Word has length 50 [2021-11-07 01:01:55,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:55,875 INFO L470 AbstractCegarLoop]: Abstraction has 11320 states and 15229 transitions. [2021-11-07 01:01:55,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:01:55,876 INFO L276 IsEmpty]: Start isEmpty. Operand 11320 states and 15229 transitions. [2021-11-07 01:01:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:01:55,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:55,885 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:01:55,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:56,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:56,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:56,307 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr202ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 01:01:56,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:56,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1331038315, now seen corresponding path program 1 times [2021-11-07 01:01:56,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:01:56,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159537838] [2021-11-07 01:01:56,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:56,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:01:56,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:01:56,315 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:01:56,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:01:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:00,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:02:00,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:02:02,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:02:04,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:04,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159537838] [2021-11-07 01:02:04,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159537838] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:04,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:04,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 01:02:04,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129570384] [2021-11-07 01:02:04,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:02:04,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:04,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:02:04,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:02:04,556 INFO L87 Difference]: Start difference. First operand 11320 states and 15229 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:05,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:05,819 INFO L93 Difference]: Finished difference Result 98565 states and 134997 transitions. [2021-11-07 01:05:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 01:05:05,820 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 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 71 [2021-11-07 01:05:05,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:06,199 INFO L225 Difference]: With dead ends: 98565 [2021-11-07 01:05:06,199 INFO L226 Difference]: Without dead ends: 87287 [2021-11-07 01:05:06,265 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2021-11-07 01:05:06,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87287 states. [2021-11-07 01:05:09,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87287 to 11348. [2021-11-07 01:05:09,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11348 states, 11003 states have (on average 1.321094247023539) internal successors, (14536), 11018 states have internal predecessors, (14536), 252 states have call successors, (252), 14 states have call predecessors, (252), 14 states have return successors, (469), 315 states have call predecessors, (469), 252 states have call successors, (469) [2021-11-07 01:05:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11348 states to 11348 states and 15257 transitions. [2021-11-07 01:05:09,195 INFO L78 Accepts]: Start accepts. Automaton has 11348 states and 15257 transitions. Word has length 71 [2021-11-07 01:05:09,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:09,195 INFO L470 AbstractCegarLoop]: Abstraction has 11348 states and 15257 transitions. [2021-11-07 01:05:09,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:09,196 INFO L276 IsEmpty]: Start isEmpty. Operand 11348 states and 15257 transitions. [2021-11-07 01:05:09,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:05:09,204 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:09,205 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:09,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 01:05:09,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:05:09,419 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr202ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 01:05:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:09,420 INFO L85 PathProgramCache]: Analyzing trace with hash 325202295, now seen corresponding path program 1 times [2021-11-07 01:05:09,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:09,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625999014] [2021-11-07 01:05:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:09,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:09,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:09,422 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:09,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:05:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:11,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:05:11,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:14,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:16,985 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:16,985 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:16,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625999014] [2021-11-07 01:05:16,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625999014] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:16,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [564604458] [2021-11-07 01:05:16,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:16,986 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:16,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:05:16,989 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:05:16,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:05:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:18,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:05:18,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:05:19,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:05:20,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [564604458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:20,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:05:20,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:05:20,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337654233] [2021-11-07 01:05:20,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:05:20,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:20,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:05:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:05:20,986 INFO L87 Difference]: Start difference. First operand 11348 states and 15257 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:21,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:21,994 INFO L93 Difference]: Finished difference Result 19664 states and 26724 transitions. [2021-11-07 01:05:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:05:21,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 72 [2021-11-07 01:05:21,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:22,036 INFO L225 Difference]: With dead ends: 19664 [2021-11-07 01:05:22,037 INFO L226 Difference]: Without dead ends: 11348 [2021-11-07 01:05:22,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:05:22,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11348 states. [2021-11-07 01:05:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11348 to 11348. [2021-11-07 01:05:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11348 states, 11003 states have (on average 1.3202762882850132) internal successors, (14527), 11018 states have internal predecessors, (14527), 252 states have call successors, (252), 14 states have call predecessors, (252), 14 states have return successors, (469), 315 states have call predecessors, (469), 252 states have call successors, (469) [2021-11-07 01:05:22,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11348 states to 11348 states and 15248 transitions. [2021-11-07 01:05:22,982 INFO L78 Accepts]: Start accepts. Automaton has 11348 states and 15248 transitions. Word has length 72 [2021-11-07 01:05:22,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:22,982 INFO L470 AbstractCegarLoop]: Abstraction has 11348 states and 15248 transitions. [2021-11-07 01:05:22,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:22,983 INFO L276 IsEmpty]: Start isEmpty. Operand 11348 states and 15248 transitions. [2021-11-07 01:05:22,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:05:22,990 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:22,990 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:23,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:23,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:23,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:23,411 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr202ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 01:05:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:23,412 INFO L85 PathProgramCache]: Analyzing trace with hash -751090847, now seen corresponding path program 1 times [2021-11-07 01:05:23,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:23,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323037264] [2021-11-07 01:05:23,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:23,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:23,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:23,414 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:23,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:05:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:25,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:05:25,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:05:28,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:05:31,069 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:31,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323037264] [2021-11-07 01:05:31,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323037264] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:31,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [723011453] [2021-11-07 01:05:31,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:31,070 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:31,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:05:31,071 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:05:31,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:05:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:32,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:05:32,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:34,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:35,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [723011453] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:35,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:05:35,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:05:35,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808853223] [2021-11-07 01:05:35,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:05:35,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:35,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:05:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:05:35,272 INFO L87 Difference]: Start difference. First operand 11348 states and 15248 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:36,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:36,212 INFO L93 Difference]: Finished difference Result 19664 states and 26706 transitions. [2021-11-07 01:05:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:05:36,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 72 [2021-11-07 01:05:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:36,251 INFO L225 Difference]: With dead ends: 19664 [2021-11-07 01:05:36,251 INFO L226 Difference]: Without dead ends: 11348 [2021-11-07 01:05:36,279 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:05:36,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11348 states. [2021-11-07 01:05:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11348 to 11348. [2021-11-07 01:05:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11348 states, 11003 states have (on average 1.3194583295464872) internal successors, (14518), 11018 states have internal predecessors, (14518), 252 states have call successors, (252), 14 states have call predecessors, (252), 14 states have return successors, (469), 315 states have call predecessors, (469), 252 states have call successors, (469) [2021-11-07 01:05:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11348 states to 11348 states and 15239 transitions. [2021-11-07 01:05:37,266 INFO L78 Accepts]: Start accepts. Automaton has 11348 states and 15239 transitions. Word has length 72 [2021-11-07 01:05:37,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:37,266 INFO L470 AbstractCegarLoop]: Abstraction has 11348 states and 15239 transitions. [2021-11-07 01:05:37,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 11348 states and 15239 transitions. [2021-11-07 01:05:37,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:05:37,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:37,275 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:37,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:37,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-07 01:05:37,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:37,690 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr202ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 01:05:37,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:37,690 INFO L85 PathProgramCache]: Analyzing trace with hash 713358263, now seen corresponding path program 1 times [2021-11-07 01:05:37,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:37,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033682814] [2021-11-07 01:05:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:37,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:37,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:37,692 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:37,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:05:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:40,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:05:40,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:05:42,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:45,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:05:45,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:45,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033682814] [2021-11-07 01:05:45,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033682814] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:45,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1602159790] [2021-11-07 01:05:45,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:45,376 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:45,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:05:45,377 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:05:45,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:05:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:46,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:05:46,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:50,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:53,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1602159790] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:53,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:05:53,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 15 [2021-11-07 01:05:53,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640281241] [2021-11-07 01:05:53,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:05:53,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:53,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:05:53,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:05:53,374 INFO L87 Difference]: Start difference. First operand 11348 states and 15239 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:16,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:16,049 INFO L93 Difference]: Finished difference Result 39527 states and 53385 transitions. [2021-11-07 01:06:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:06:16,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 01:06:16,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:16,157 INFO L225 Difference]: With dead ends: 39527 [2021-11-07 01:06:16,157 INFO L226 Difference]: Without dead ends: 31211 [2021-11-07 01:06:16,191 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 273 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:06:16,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31211 states. [2021-11-07 01:06:17,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31211 to 11357. [2021-11-07 01:06:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11357 states, 11012 states have (on average 1.319197239375227) internal successors, (14527), 11027 states have internal predecessors, (14527), 252 states have call successors, (252), 14 states have call predecessors, (252), 14 states have return successors, (469), 315 states have call predecessors, (469), 252 states have call successors, (469) [2021-11-07 01:06:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11357 states to 11357 states and 15248 transitions. [2021-11-07 01:06:17,638 INFO L78 Accepts]: Start accepts. Automaton has 11357 states and 15248 transitions. Word has length 72 [2021-11-07 01:06:17,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:17,638 INFO L470 AbstractCegarLoop]: Abstraction has 11357 states and 15248 transitions. [2021-11-07 01:06:17,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:17,639 INFO L276 IsEmpty]: Start isEmpty. Operand 11357 states and 15248 transitions. [2021-11-07 01:06:17,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:06:17,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:17,645 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:17,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-07 01:06:17,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-07 01:06:18,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:18,058 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr202ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 01:06:18,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:18,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1724475513, now seen corresponding path program 1 times [2021-11-07 01:06:18,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:18,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122291932] [2021-11-07 01:06:18,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:18,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:18,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:18,061 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:18,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:06:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:20,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:06:20,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:06:22,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:06:25,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:25,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122291932] [2021-11-07 01:06:25,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122291932] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:25,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1537899499] [2021-11-07 01:06:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:25,798 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:25,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:25,798 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:25,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:06:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:27,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:06:27,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:06:35,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:06:42,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1537899499] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:42,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:06:42,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:06:42,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596304874] [2021-11-07 01:06:42,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:42,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:42,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:42,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:06:42,840 INFO L87 Difference]: Start difference. First operand 11357 states and 15248 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:34,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:34,933 INFO L93 Difference]: Finished difference Result 11360 states and 15250 transitions. [2021-11-07 01:07:34,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:07:34,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 72 [2021-11-07 01:07:34,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:34,961 INFO L225 Difference]: With dead ends: 11360 [2021-11-07 01:07:34,961 INFO L226 Difference]: Without dead ends: 11357 [2021-11-07 01:07:34,969 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:07:34,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11357 states. [2021-11-07 01:07:35,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11357 to 10501. [2021-11-07 01:07:35,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10501 states, 10161 states have (on average 1.304497588819998) internal successors, (13255), 10176 states have internal predecessors, (13255), 249 states have call successors, (249), 12 states have call predecessors, (249), 12 states have return successors, (460), 312 states have call predecessors, (460), 249 states have call successors, (460) [2021-11-07 01:07:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10501 states to 10501 states and 13964 transitions. [2021-11-07 01:07:35,884 INFO L78 Accepts]: Start accepts. Automaton has 10501 states and 13964 transitions. Word has length 72 [2021-11-07 01:07:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:35,885 INFO L470 AbstractCegarLoop]: Abstraction has 10501 states and 13964 transitions. [2021-11-07 01:07:35,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:35,885 INFO L276 IsEmpty]: Start isEmpty. Operand 10501 states and 13964 transitions. [2021-11-07 01:07:35,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 01:07:35,902 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:35,902 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:35,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:36,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-07 01:07:36,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:07:36,319 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 01:07:36,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:36,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2045268269, now seen corresponding path program 1 times [2021-11-07 01:07:36,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:36,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906301810] [2021-11-07 01:07:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:36,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:36,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:36,323 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:36,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:07:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:40,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1589 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:07:40,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:43,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:07:43,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:07:44,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:44,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906301810] [2021-11-07 01:07:44,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906301810] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:44,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:44,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:07:44,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91082769] [2021-11-07 01:07:44,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:44,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:44,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:44,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:44,244 INFO L87 Difference]: Start difference. First operand 10501 states and 13964 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 01:07:50,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:50,958 INFO L93 Difference]: Finished difference Result 20960 states and 27878 transitions. [2021-11-07 01:07:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:07:51,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 107 [2021-11-07 01:07:51,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:51,702 INFO L225 Difference]: With dead ends: 20960 [2021-11-07 01:07:51,702 INFO L226 Difference]: Without dead ends: 10516 [2021-11-07 01:07:51,730 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:51,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10516 states. [2021-11-07 01:07:52,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10516 to 10516. [2021-11-07 01:07:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10516 states, 10176 states have (on average 1.3040487421383649) internal successors, (13270), 10191 states have internal predecessors, (13270), 249 states have call successors, (249), 12 states have call predecessors, (249), 12 states have return successors, (460), 312 states have call predecessors, (460), 249 states have call successors, (460) [2021-11-07 01:07:52,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10516 states to 10516 states and 13979 transitions. [2021-11-07 01:07:52,686 INFO L78 Accepts]: Start accepts. Automaton has 10516 states and 13979 transitions. Word has length 107 [2021-11-07 01:07:52,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:52,686 INFO L470 AbstractCegarLoop]: Abstraction has 10516 states and 13979 transitions. [2021-11-07 01:07:52,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 01:07:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 10516 states and 13979 transitions. [2021-11-07 01:07:52,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-07 01:07:52,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:52,699 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:52,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:52,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:52,915 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 01:07:52,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:52,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1740516354, now seen corresponding path program 1 times [2021-11-07 01:07:52,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:52,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967462194] [2021-11-07 01:07:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:52,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:52,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:52,919 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:52,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:07:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:57,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:07:57,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:08:02,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:08:05,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:05,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967462194] [2021-11-07 01:08:05,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967462194] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:08:05,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [875155010] [2021-11-07 01:08:05,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:05,669 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:08:05,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:08:05,670 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:08:05,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 01:08:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:07,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:08:07,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:08:11,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:08:13,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [875155010] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:13,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:08:13,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:08:13,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859888469] [2021-11-07 01:08:13,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:08:13,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:13,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:08:13,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:08:13,171 INFO L87 Difference]: Start difference. First operand 10516 states and 13979 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 01:08:21,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:21,976 INFO L93 Difference]: Finished difference Result 33306 states and 44698 transitions. [2021-11-07 01:08:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:08:21,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 135 [2021-11-07 01:08:21,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:22,052 INFO L225 Difference]: With dead ends: 33306 [2021-11-07 01:08:22,052 INFO L226 Difference]: Without dead ends: 22850 [2021-11-07 01:08:22,079 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:08:22,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22850 states. [2021-11-07 01:08:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22850 to 10636. [2021-11-07 01:08:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10636 states, 10296 states have (on average 1.3005050505050506) internal successors, (13390), 10311 states have internal predecessors, (13390), 249 states have call successors, (249), 12 states have call predecessors, (249), 12 states have return successors, (460), 312 states have call predecessors, (460), 249 states have call successors, (460) [2021-11-07 01:08:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10636 states to 10636 states and 14099 transitions. [2021-11-07 01:08:23,352 INFO L78 Accepts]: Start accepts. Automaton has 10636 states and 14099 transitions. Word has length 135 [2021-11-07 01:08:23,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:23,353 INFO L470 AbstractCegarLoop]: Abstraction has 10636 states and 14099 transitions. [2021-11-07 01:08:23,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 01:08:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 10636 states and 14099 transitions. [2021-11-07 01:08:23,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 01:08:23,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:23,372 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:23,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-07 01:08:23,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:23,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:08:23,792 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 203 more)] === [2021-11-07 01:08:23,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:23,792 INFO L85 PathProgramCache]: Analyzing trace with hash 831735833, now seen corresponding path program 1 times [2021-11-07 01:08:23,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:23,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057346354] [2021-11-07 01:08:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:23,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:23,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:23,796 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:23,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17841da-d6fa-4a73-bce7-70839fb8e57d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 01:08:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:28,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:08:28,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:33,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:33,159 INFO L328 TraceCheckSpWp]: Computing backward predicates...