./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/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_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:39:33,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:39:33,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:39:33,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:39:33,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:39:33,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:39:33,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:39:33,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:39:33,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:39:33,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:39:33,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:39:33,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:39:33,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:39:33,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:39:33,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:39:33,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:39:33,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:39:33,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:39:33,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:39:33,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:39:33,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:39:33,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:39:33,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:39:33,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:39:33,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:39:33,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:39:33,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:39:33,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:39:33,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:39:33,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:39:33,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:39:33,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:39:33,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:39:33,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:39:33,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:39:33,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:39:33,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:39:33,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:39:33,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:39:33,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:39:33,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:39:33,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:39:33,581 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:39:33,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:39:33,582 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:39:33,582 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:39:33,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:39:33,584 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:39:33,584 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:39:33,584 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:39:33,585 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:39:33,585 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:39:33,586 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:39:33,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:39:33,587 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:39:33,587 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:39:33,587 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:39:33,588 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:39:33,588 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:39:33,588 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:39:33,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:39:33,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:39:33,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:39:33,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:39:33,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:39:33,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:39:33,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:39:33,593 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:39:33,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:39:33,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:39:33,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:39:33,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:39:33,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:39:33,595 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:39:33,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:39:33,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:39:33,596 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:39:33,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:39:33,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:39:33,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:39:33,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2022-11-03 02:39:33,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:39:33,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:39:33,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:39:33,991 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:39:33,992 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:39:33,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-11-03 02:39:34,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/data/5ab5b99a6/9496d74d51fc4fb3b97d39eaf4082a87/FLAG2d893ab17 [2022-11-03 02:39:34,967 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:39:34,975 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-11-03 02:39:35,015 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/data/5ab5b99a6/9496d74d51fc4fb3b97d39eaf4082a87/FLAG2d893ab17 [2022-11-03 02:39:35,493 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/data/5ab5b99a6/9496d74d51fc4fb3b97d39eaf4082a87 [2022-11-03 02:39:35,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:39:35,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:39:35,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:39:35,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:39:35,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:39:35,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:39:35" (1/1) ... [2022-11-03 02:39:35,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@511eca69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:35, skipping insertion in model container [2022-11-03 02:39:35,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:39:35" (1/1) ... [2022-11-03 02:39:35,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:39:35,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:39:37,369 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-11-03 02:39:37,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:39:37,461 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:39:37,932 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-11-03 02:39:37,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:39:38,017 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:39:38,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38 WrapperNode [2022-11-03 02:39:38,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:39:38,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:39:38,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:39:38,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:39:38,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38" (1/1) ... [2022-11-03 02:39:38,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38" (1/1) ... [2022-11-03 02:39:38,244 INFO L138 Inliner]: procedures = 186, calls = 1465, calls flagged for inlining = 91, calls inlined = 88, statements flattened = 4139 [2022-11-03 02:39:38,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:39:38,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:39:38,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:39:38,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:39:38,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38" (1/1) ... [2022-11-03 02:39:38,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38" (1/1) ... [2022-11-03 02:39:38,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38" (1/1) ... [2022-11-03 02:39:38,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38" (1/1) ... [2022-11-03 02:39:38,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38" (1/1) ... [2022-11-03 02:39:38,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38" (1/1) ... [2022-11-03 02:39:38,533 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38" (1/1) ... [2022-11-03 02:39:38,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38" (1/1) ... [2022-11-03 02:39:38,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:39:38,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:39:38,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:39:38,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:39:38,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38" (1/1) ... [2022-11-03 02:39:38,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:39:38,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:39:38,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:39:38,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:39:38,675 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_sw [2022-11-03 02:39:38,676 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_sw [2022-11-03 02:39:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_file_remove [2022-11-03 02:39:38,676 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_file_remove [2022-11-03 02:39:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:39:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 02:39:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 02:39:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_recsrc2 [2022-11-03 02:39:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_recsrc2 [2022-11-03 02:39:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_find_numid [2022-11-03 02:39:38,678 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_find_numid [2022-11-03 02:39:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv [2022-11-03 02:39:38,678 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv [2022-11-03 02:39:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:39:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 02:39:38,679 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 02:39:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_input [2022-11-03 02:39:38,679 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_input [2022-11-03 02:39:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:39:38,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:39:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 02:39:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:39:38,680 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:39:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_test_id [2022-11-03 02:39:38,680 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_test_id [2022-11-03 02:39:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:39:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 02:39:38,681 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 02:39:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:39:38,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:39:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:39:38,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:39:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_vol [2022-11-03 02:39:38,682 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_vol [2022-11-03 02:39:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure snd_info_free_entry [2022-11-03 02:39:38,683 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_info_free_entry [2022-11-03 02:39:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:39:38,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:39:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:39:38,684 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:39:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_release [2022-11-03 02:39:38,684 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_release [2022-11-03 02:39:38,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:39:38,685 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv2 [2022-11-03 02:39:38,685 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv2 [2022-11-03 02:39:38,686 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv1 [2022-11-03 02:39:38,686 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv1 [2022-11-03 02:39:38,686 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2022-11-03 02:39:38,688 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-11-03 02:39:38,689 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-11-03 02:39:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:39:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2022-11-03 02:39:38,690 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2022-11-03 02:39:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 02:39:38,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 02:39:38,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:39:38,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:39:38,692 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:39:38,692 INFO L130 BoogieDeclarations]: Found specification of procedure mixer_slot_clear [2022-11-03 02:39:38,693 INFO L138 BoogieDeclarations]: Found implementation of procedure mixer_slot_clear [2022-11-03 02:39:38,693 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_notify [2022-11-03 02:39:38,693 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_notify [2022-11-03 02:39:38,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:39:38,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:39:38,694 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_ioctl1 [2022-11-03 02:39:38,694 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_ioctl1 [2022-11-03 02:39:38,695 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-11-03 02:39:38,695 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-11-03 02:39:38,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-11-03 02:39:38,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-11-03 02:39:38,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:39:38,696 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-11-03 02:39:38,697 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-11-03 02:39:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:39:38,697 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:39:38,698 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_sw [2022-11-03 02:39:38,698 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_sw [2022-11-03 02:39:38,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-11-03 02:39:38,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-11-03 02:39:38,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:39:38,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:39:38,699 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_test [2022-11-03 02:39:38,700 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_test [2022-11-03 02:39:38,700 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2022-11-03 02:39:38,700 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2022-11-03 02:39:38,701 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 02:39:38,701 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 02:39:38,701 INFO L130 BoogieDeclarations]: Found specification of procedure snd_oss_info_register [2022-11-03 02:39:38,702 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_oss_info_register [2022-11-03 02:39:38,703 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_vol [2022-11-03 02:39:38,703 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_vol [2022-11-03 02:39:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_notify_handler [2022-11-03 02:39:38,704 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_notify_handler [2022-11-03 02:39:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:39:38,705 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:39:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:39:38,705 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:39:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:39:38,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:39:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_dereference [2022-11-03 02:39:38,706 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_dereference [2022-11-03 02:39:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_open [2022-11-03 02:39:38,707 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_open [2022-11-03 02:39:38,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:39:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-03 02:39:38,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-03 02:39:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:39:38,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:39:39,398 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:39:39,401 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:39:52,266 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:39:53,925 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:39:53,926 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:39:53,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:39:53 BoogieIcfgContainer [2022-11-03 02:39:53,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:39:53,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:39:53,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:39:53,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:39:53,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:39:35" (1/3) ... [2022-11-03 02:39:53,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3dd348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:39:53, skipping insertion in model container [2022-11-03 02:39:53,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38" (2/3) ... [2022-11-03 02:39:53,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3dd348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:39:53, skipping insertion in model container [2022-11-03 02:39:53,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:39:53" (3/3) ... [2022-11-03 02:39:53,956 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-11-03 02:39:53,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:39:53,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:39:54,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:39:54,124 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@604aef1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:39:54,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:39:54,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 843 states, 540 states have (on average 1.3925925925925926) internal successors, (752), 557 states have internal predecessors, (752), 255 states have call successors, (255), 46 states have call predecessors, (255), 46 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2022-11-03 02:39:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:39:54,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:54,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:54,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:39:54,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2091663014, now seen corresponding path program 1 times [2022-11-03 02:39:54,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:54,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605741887] [2022-11-03 02:39:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:54,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:54,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:54,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605741887] [2022-11-03 02:39:54,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605741887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:54,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:54,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:39:54,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826841555] [2022-11-03 02:39:54,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:54,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:54,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:54,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:54,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:54,890 INFO L87 Difference]: Start difference. First operand has 843 states, 540 states have (on average 1.3925925925925926) internal successors, (752), 557 states have internal predecessors, (752), 255 states have call successors, (255), 46 states have call predecessors, (255), 46 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:39:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:57,073 INFO L93 Difference]: Finished difference Result 1659 states and 2601 transitions. [2022-11-03 02:39:57,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:39:57,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-03 02:39:57,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:57,101 INFO L225 Difference]: With dead ends: 1659 [2022-11-03 02:39:57,101 INFO L226 Difference]: Without dead ends: 817 [2022-11-03 02:39:57,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:57,132 INFO L413 NwaCegarLoop]: 1092 mSDtfsCounter, 4 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:57,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2182 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 02:39:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-03 02:39:57,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 813. [2022-11-03 02:39:57,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 521 states have (on average 1.381957773512476) internal successors, (720), 534 states have internal predecessors, (720), 247 states have call successors, (247), 45 states have call predecessors, (247), 44 states have return successors, (244), 244 states have call predecessors, (244), 244 states have call successors, (244) [2022-11-03 02:39:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1211 transitions. [2022-11-03 02:39:57,358 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1211 transitions. Word has length 11 [2022-11-03 02:39:57,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:57,359 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1211 transitions. [2022-11-03 02:39:57,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:39:57,360 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1211 transitions. [2022-11-03 02:39:57,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:39:57,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:57,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:57,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:39:57,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:39:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:57,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1306889328, now seen corresponding path program 1 times [2022-11-03 02:39:57,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:57,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387160609] [2022-11-03 02:39:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:57,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:57,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:57,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387160609] [2022-11-03 02:39:57,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387160609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:39:57,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403773913] [2022-11-03 02:39:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:57,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:39:57,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:39:57,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:39:57,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:39:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:58,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:39:58,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:39:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:58,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:39:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:58,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403773913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:39:58,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1905713478] [2022-11-03 02:39:58,838 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-03 02:39:58,839 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:39:58,843 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:39:58,850 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:39:58,851 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:40:34,170 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_handler_precall with input of size 1439 for LOIs [2022-11-03 02:40:35,301 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:40:58,434 WARN L234 SmtUtils]: Spent 22.94s on a formula simplification that was a NOOP. DAG size: 1441 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:41:21,702 WARN L234 SmtUtils]: Spent 23.05s on a formula simplification that was a NOOP. DAG size: 1439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:41:23,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1905713478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:23,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:41:23,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 13 [2022-11-03 02:41:23,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249550786] [2022-11-03 02:41:23,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:23,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:41:23,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:41:23,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:41:23,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:41:23,011 INFO L87 Difference]: Start difference. First operand 813 states and 1211 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:42:11,641 WARN L234 SmtUtils]: Spent 48.22s on a formula simplification. DAG size of input: 1444 DAG size of output: 1443 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:43:02,863 WARN L234 SmtUtils]: Spent 51.01s on a formula simplification. DAG size of input: 1457 DAG size of output: 1456 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:44:06,444 WARN L234 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 1457 DAG size of output: 1456 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:45:18,737 WARN L234 SmtUtils]: Spent 1.18m on a formula simplification. DAG size of input: 1448 DAG size of output: 1447 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:45:26,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:45:28,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:45:30,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:45:32,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:45:41,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:45:46,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:46:05,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:46:18,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:46:20,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:46:22,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:46:24,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:46:26,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:46:28,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:46:30,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:46:31,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:46:33,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:33,188 INFO L93 Difference]: Finished difference Result 1960 states and 2955 transitions. [2022-11-03 02:46:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:46:33,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-03 02:46:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:33,199 INFO L225 Difference]: With dead ends: 1960 [2022-11-03 02:46:33,199 INFO L226 Difference]: Without dead ends: 1151 [2022-11-03 02:46:33,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 281.9s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:46:33,205 INFO L413 NwaCegarLoop]: 1099 mSDtfsCounter, 503 mSDsluCounter, 5136 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 53 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 5802 SdHoareTripleChecker+Invalid, 2568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:33,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 5802 Invalid, 2568 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 2506 Invalid, 9 Unknown, 0 Unchecked, 74.6s Time] [2022-11-03 02:46:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-11-03 02:46:34,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1102. [2022-11-03 02:46:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 716 states have (on average 1.405027932960894) internal successors, (1006), 748 states have internal predecessors, (1006), 322 states have call successors, (322), 67 states have call predecessors, (322), 63 states have return successors, (347), 297 states have call predecessors, (347), 319 states have call successors, (347) [2022-11-03 02:46:34,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1675 transitions. [2022-11-03 02:46:34,113 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1675 transitions. Word has length 14 [2022-11-03 02:46:34,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:34,114 INFO L495 AbstractCegarLoop]: Abstraction has 1102 states and 1675 transitions. [2022-11-03 02:46:34,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:46:34,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1675 transitions. [2022-11-03 02:46:34,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 02:46:34,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:34,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:34,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:34,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:46:34,333 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:34,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash 712438822, now seen corresponding path program 1 times [2022-11-03 02:46:34,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:46:34,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705749997] [2022-11-03 02:46:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:34,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:46:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:34,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:46:34,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705749997] [2022-11-03 02:46:34,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705749997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:34,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:34,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:46:34,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774823022] [2022-11-03 02:46:34,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:34,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:46:34,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:46:34,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:46:34,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:46:34,608 INFO L87 Difference]: Start difference. First operand 1102 states and 1675 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:46:38,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:46:39,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:46:40,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:40,426 INFO L93 Difference]: Finished difference Result 1925 states and 2903 transitions. [2022-11-03 02:46:40,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:46:40,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-11-03 02:46:40,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:40,442 INFO L225 Difference]: With dead ends: 1925 [2022-11-03 02:46:40,442 INFO L226 Difference]: Without dead ends: 1108 [2022-11-03 02:46:40,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:46:40,455 INFO L413 NwaCegarLoop]: 1085 mSDtfsCounter, 76 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:40,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 3164 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 02:46:40,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-11-03 02:46:41,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2022-11-03 02:46:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 721 states have (on average 1.4022191400832178) internal successors, (1011), 752 states have internal predecessors, (1011), 322 states have call successors, (322), 69 states have call predecessors, (322), 64 states have return successors, (349), 297 states have call predecessors, (349), 319 states have call successors, (349) [2022-11-03 02:46:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1682 transitions. [2022-11-03 02:46:41,853 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1682 transitions. Word has length 21 [2022-11-03 02:46:41,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:41,854 INFO L495 AbstractCegarLoop]: Abstraction has 1108 states and 1682 transitions. [2022-11-03 02:46:41,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:46:41,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1682 transitions. [2022-11-03 02:46:41,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 02:46:41,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:41,856 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:46:41,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:46:41,856 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:41,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash -531245527, now seen corresponding path program 1 times [2022-11-03 02:46:41,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:46:41,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275229681] [2022-11-03 02:46:41,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:41,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:46:41,901 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:46:41,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831443324] [2022-11-03 02:46:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:41,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:46:41,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:46:41,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:46:41,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4f88aa-a761-4303-972f-94b3cb66c931/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:46:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:42,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:46:42,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:42,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:42,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:46:42,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275229681] [2022-11-03 02:46:42,724 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:46:42,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831443324] [2022-11-03 02:46:42,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831443324] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:46:42,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [337008297] [2022-11-03 02:46:42,727 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-03 02:46:42,727 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:46:42,727 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:46:42,727 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:46:42,728 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:46:54,495 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:46:54,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2022-11-03 02:46:54,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-03 02:46:54,542 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:47:02,585 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_handler_precall with input of size 1439 for LOIs [2022-11-03 02:47:03,578 INFO L197 IcfgInterpreter]: Interpreting procedure snd_mixer_oss_notify_handler with input of size 1474 for LOIs [2022-11-03 02:47:07,543 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:47:51,355 WARN L234 SmtUtils]: Spent 43.62s on a formula simplification that was a NOOP. DAG size: 1441 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:36,637 WARN L234 SmtUtils]: Spent 45.07s on a formula simplification that was a NOOP. DAG size: 1439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:22,220 WARN L234 SmtUtils]: Spent 45.44s on a formula simplification that was a NOOP. DAG size: 1449 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:11,260 WARN L234 SmtUtils]: Spent 48.86s on a formula simplification that was a NOOP. DAG size: 1461 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:03,274 WARN L234 SmtUtils]: Spent 51.77s on a formula simplification that was a NOOP. DAG size: 1466 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:24,970 WARN L234 SmtUtils]: Spent 21.35s on a formula simplification that was a NOOP. DAG size: 1474 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:28,675 WARN L234 SmtUtils]: Spent 1.03m on a formula simplification. DAG size of input: 1500 DAG size of output: 1496 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)