./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/main8_sound-oss-sound-ko--32_7a--c4cb1dd-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/main8_sound-oss-sound-ko--32_7a--c4cb1dd-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta --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 dc5bd88db6cb2e7d4a77c9c48c9161e7e0757266bafef5539df42154bcc77181 --- 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-dbf71c6-m [2022-10-17 17:43:28,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:43:28,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:43:28,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:43:28,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:43:28,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:43:28,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:43:28,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:43:28,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:43:28,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:43:28,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:43:28,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:43:28,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:43:28,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:43:28,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:43:28,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:43:28,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:43:28,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:43:28,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:43:28,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:43:28,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:43:28,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:43:28,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:43:28,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:43:28,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:43:28,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:43:28,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:43:28,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:43:28,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:43:28,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:43:28,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:43:28,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:43:28,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:43:28,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:43:28,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:43:28,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:43:28,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:43:28,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:43:28,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:43:28,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:43:28,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:43:28,569 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:43:28,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:43:28,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:43:28,633 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:43:28,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:43:28,634 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:43:28,634 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:43:28,634 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:43:28,635 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:43:28,635 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:43:28,635 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:43:28,636 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:43:28,636 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:43:28,637 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:43:28,637 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:43:28,637 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:43:28,638 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:43:28,638 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:43:28,638 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:43:28,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:43:28,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:43:28,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:43:28,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:43:28,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:43:28,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:43:28,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:43:28,640 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:43:28,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:43:28,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:43:28,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:43:28,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:43:28,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:43:28,642 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:43:28,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:43:28,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:43:28,643 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:43:28,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:43:28,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:43:28,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:43:28,655 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_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc5bd88db6cb2e7d4a77c9c48c9161e7e0757266bafef5539df42154bcc77181 [2022-10-17 17:43:29,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:43:29,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:43:29,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:43:29,053 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:43:29,054 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:43:29,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-commit-tester/main8_sound-oss-sound-ko--32_7a--c4cb1dd-1.i [2022-10-17 17:43:29,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/data/de7e9ab5f/1246def962534202a505c371bbdbe6a9/FLAGb699df42f [2022-10-17 17:43:30,308 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:43:30,309 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/sv-benchmarks/c/ldv-commit-tester/main8_sound-oss-sound-ko--32_7a--c4cb1dd-1.i [2022-10-17 17:43:30,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/data/de7e9ab5f/1246def962534202a505c371bbdbe6a9/FLAGb699df42f [2022-10-17 17:43:30,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/data/de7e9ab5f/1246def962534202a505c371bbdbe6a9 [2022-10-17 17:43:30,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:43:30,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:43:30,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:43:30,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:43:30,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:43:30,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:43:30" (1/1) ... [2022-10-17 17:43:30,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ced6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30, skipping insertion in model container [2022-10-17 17:43:30,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:43:30" (1/1) ... [2022-10-17 17:43:30,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:43:30,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:43:33,633 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_1beb5493-597a-445c-a378-c9e344b6878f/sv-benchmarks/c/ldv-commit-tester/main8_sound-oss-sound-ko--32_7a--c4cb1dd-1.i[376899,376912] [2022-10-17 17:43:33,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:43:33,795 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:43:34,207 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-10-17 17:43:34,218 INFO L158 Benchmark]: Toolchain (without parser) took 3685.42ms. Allocated memory was 96.5MB in the beginning and 144.7MB in the end (delta: 48.2MB). Free memory was 60.8MB in the beginning and 49.4MB in the end (delta: 11.4MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2022-10-17 17:43:34,220 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 96.5MB. Free memory was 69.9MB in the beginning and 69.8MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:43:34,221 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3681.77ms. Allocated memory was 96.5MB in the beginning and 144.7MB in the end (delta: 48.2MB). Free memory was 60.3MB in the beginning and 49.4MB in the end (delta: 10.9MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. [2022-10-17 17:43:34,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 96.5MB. Free memory was 69.9MB in the beginning and 69.8MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3681.77ms. Allocated memory was 96.5MB in the beginning and 144.7MB in the end (delta: 48.2MB). Free memory was 60.3MB in the beginning and 49.4MB in the end (delta: 10.9MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) 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_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/main8_sound-oss-sound-ko--32_7a--c4cb1dd-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta --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 dc5bd88db6cb2e7d4a77c9c48c9161e7e0757266bafef5539df42154bcc77181 --- 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-dbf71c6-m [2022-10-17 17:43:36,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:43:36,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:43:36,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:43:36,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:43:36,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:43:36,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:43:36,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:43:36,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:43:36,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:43:36,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:43:36,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:43:36,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:43:36,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:43:36,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:43:36,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:43:36,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:43:36,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:43:36,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:43:36,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:43:36,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:43:36,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:43:36,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:43:36,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:43:36,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:43:36,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:43:36,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:43:36,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:43:36,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:43:36,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:43:36,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:43:36,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:43:36,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:43:36,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:43:36,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:43:36,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:43:36,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:43:36,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:43:36,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:43:36,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:43:36,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:43:36,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-10-17 17:43:36,610 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:43:36,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:43:36,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:43:36,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:43:36,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:43:36,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:43:36,613 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:43:36,613 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:43:36,613 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:43:36,613 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:43:36,614 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:43:36,614 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:43:36,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:43:36,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:43:36,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:43:36,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:43:36,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:43:36,617 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:43:36,617 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:43:36,617 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:43:36,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:43:36,617 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:43:36,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:43:36,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:43:36,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:43:36,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:43:36,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:43:36,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:43:36,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:43:36,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:43:36,619 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:43:36,619 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:43:36,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:43:36,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:43:36,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:43:36,621 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_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc5bd88db6cb2e7d4a77c9c48c9161e7e0757266bafef5539df42154bcc77181 [2022-10-17 17:43:37,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:43:37,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:43:37,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:43:37,084 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:43:37,085 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:43:37,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-commit-tester/main8_sound-oss-sound-ko--32_7a--c4cb1dd-1.i [2022-10-17 17:43:37,160 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/data/e606af38e/ef153f04b7ba4a5b83a6a11c3273789c/FLAG3ce15737e [2022-10-17 17:43:38,282 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:43:38,283 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/sv-benchmarks/c/ldv-commit-tester/main8_sound-oss-sound-ko--32_7a--c4cb1dd-1.i [2022-10-17 17:43:38,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/data/e606af38e/ef153f04b7ba4a5b83a6a11c3273789c/FLAG3ce15737e [2022-10-17 17:43:38,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/data/e606af38e/ef153f04b7ba4a5b83a6a11c3273789c [2022-10-17 17:43:38,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:43:38,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:43:38,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:43:38,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:43:38,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:43:38,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:43:38" (1/1) ... [2022-10-17 17:43:38,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4751abfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:38, skipping insertion in model container [2022-10-17 17:43:38,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:43:38" (1/1) ... [2022-10-17 17:43:38,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:43:39,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:43:41,932 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_1beb5493-597a-445c-a378-c9e344b6878f/sv-benchmarks/c/ldv-commit-tester/main8_sound-oss-sound-ko--32_7a--c4cb1dd-1.i[376899,376912] [2022-10-17 17:43:42,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:43:42,137 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 17:43:42,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:43:42,714 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_1beb5493-597a-445c-a378-c9e344b6878f/sv-benchmarks/c/ldv-commit-tester/main8_sound-oss-sound-ko--32_7a--c4cb1dd-1.i[376899,376912] [2022-10-17 17:43:42,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:43:42,831 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:43:43,445 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_1beb5493-597a-445c-a378-c9e344b6878f/sv-benchmarks/c/ldv-commit-tester/main8_sound-oss-sound-ko--32_7a--c4cb1dd-1.i[376899,376912] [2022-10-17 17:43:43,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:43:43,698 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:43:43,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:43 WrapperNode [2022-10-17 17:43:43,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:43:43,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:43:43,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:43:43,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:43:43,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:43" (1/1) ... [2022-10-17 17:43:43,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:43" (1/1) ... [2022-10-17 17:43:43,998 INFO L138 Inliner]: procedures = 397, calls = 5011, calls flagged for inlining = 129, calls inlined = 4, statements flattened = 1548 [2022-10-17 17:43:43,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:43:44,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:43:44,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:43:44,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:43:44,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:43" (1/1) ... [2022-10-17 17:43:44,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:43" (1/1) ... [2022-10-17 17:43:44,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:43" (1/1) ... [2022-10-17 17:43:44,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:43" (1/1) ... [2022-10-17 17:43:44,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:43" (1/1) ... [2022-10-17 17:43:44,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:43" (1/1) ... [2022-10-17 17:43:44,198 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:43" (1/1) ... [2022-10-17 17:43:44,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:43" (1/1) ... [2022-10-17 17:43:44,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:43:44,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:43:44,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:43:44,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:43:44,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:43" (1/1) ... [2022-10-17 17:43:44,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:43:44,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:43:44,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:43:44,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:43:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-10-17 17:43:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-10-17 17:43:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-10-17 17:43:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure seq_copy_to_input [2022-10-17 17:43:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_copy_to_input [2022-10-17 17:43:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 17:43:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 17:43:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 17:43:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 17:43:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:43:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-10-17 17:43:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:43:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-10-17 17:43:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-10-17 17:43:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure timer_ioctl [2022-10-17 17:43:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_ioctl [2022-10-17 17:43:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_UINT~X~$Pointer$~TO~C_INT [2022-10-17 17:43:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_UINT~X~$Pointer$~TO~C_INT [2022-10-17 17:43:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-10-17 17:43:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-10-17 17:43:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 17:43:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 17:43:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure default_set_bits [2022-10-17 17:43:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure default_set_bits [2022-10-17 17:43:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_close [2022-10-17 17:43:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_close [2022-10-17 17:43:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-10-17 17:43:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_UINT~TO~C_UINT [2022-10-17 17:43:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_UINT~TO~C_UINT [2022-10-17 17:43:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:43:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-17 17:43:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-10-17 17:43:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-10-17 17:43:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-10-17 17:43:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-10-17 17:43:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:43:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:43:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-10-17 17:43:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-10-17 17:43:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 17:43:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 17:43:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 17:43:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure tmr_reset [2022-10-17 17:43:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr_reset [2022-10-17 17:43:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:43:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:43:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure tmr2ticks___0 [2022-10-17 17:43:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr2ticks___0 [2022-10-17 17:43:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-10-17 17:43:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-10-17 17:43:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure tmr_reset___0 [2022-10-17 17:43:44,338 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr_reset___0 [2022-10-17 17:43:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:43:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:43:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-10-17 17:43:44,339 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-10-17 17:43:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure reprogram_timer [2022-10-17 17:43:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure reprogram_timer [2022-10-17 17:43:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-10-17 17:43:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 17:43:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info___0 [2022-10-17 17:43:44,341 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info___0 [2022-10-17 17:43:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:43:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-17 17:43:44,342 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-17 17:43:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_event [2022-10-17 17:43:44,342 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_event [2022-10-17 17:43:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-17 17:43:44,342 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-17 17:43:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_open [2022-10-17 17:43:44,342 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_open [2022-10-17 17:43:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-10-17 17:43:44,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-10-17 17:43:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_get_time [2022-10-17 17:43:44,343 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_get_time [2022-10-17 17:43:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-10-17 17:43:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-10-17 17:43:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-10-17 17:43:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-10-17 17:43:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure tmr2ticks [2022-10-17 17:43:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr2ticks [2022-10-17 17:43:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-10-17 17:43:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-10-17 17:43:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_ioctl [2022-10-17 17:43:44,346 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_ioctl [2022-10-17 17:43:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-10-17 17:43:44,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-10-17 17:43:44,736 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:43:44,740 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:43:55,396 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:43:55,411 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:43:55,411 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:43:55,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:43:55 BoogieIcfgContainer [2022-10-17 17:43:55,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:43:55,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:43:55,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:43:55,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:43:55,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:43:38" (1/3) ... [2022-10-17 17:43:55,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f96403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:43:55, skipping insertion in model container [2022-10-17 17:43:55,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:43" (2/3) ... [2022-10-17 17:43:55,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f96403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:43:55, skipping insertion in model container [2022-10-17 17:43:55,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:43:55" (3/3) ... [2022-10-17 17:43:55,426 INFO L112 eAbstractionObserver]: Analyzing ICFG main8_sound-oss-sound-ko--32_7a--c4cb1dd-1.i [2022-10-17 17:43:55,448 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:43:55,448 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:43:55,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:43:55,530 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;@4b3ed08f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:43:55,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:43:55,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 367 states, 286 states have (on average 1.5) internal successors, (429), 293 states have internal predecessors, (429), 50 states have call successors, (50), 29 states have call predecessors, (50), 29 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-10-17 17:43:55,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:43:55,553 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:55,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:43:55,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:43:55,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:55,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1479164548, now seen corresponding path program 1 times [2022-10-17 17:43:55,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:43:55,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285182119] [2022-10-17 17:43:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:55,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:43:55,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:43:55,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:43:55,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1beb5493-597a-445c-a378-c9e344b6878f/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:44:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:44:00,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 2290 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:44:00,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:44:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:44:00,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:44:00,634 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:44:00,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285182119] [2022-10-17 17:44:00,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285182119] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:44:00,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:44:00,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:44:00,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508834138] [2022-10-17 17:44:00,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:44:00,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:44:00,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:44:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:44:00,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:44:00,676 INFO L87 Difference]: Start difference. First operand has 367 states, 286 states have (on average 1.5) internal successors, (429), 293 states have internal predecessors, (429), 50 states have call successors, (50), 29 states have call predecessors, (50), 29 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)