./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.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_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/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_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/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_27fc1acc-a050-48cd-83e0-e1fdbecf3009/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 a5b351dc48b78577594847e2589a2433da4c3422ed74f69290b3f52d3ba2c2d2 --- 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 17:37:24,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:37:24,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:37:24,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:37:24,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:37:24,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:37:24,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:37:24,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:37:24,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:37:24,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:37:24,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:37:24,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:37:24,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:37:24,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:37:24,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:37:24,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:37:24,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:37:24,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:37:24,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:37:24,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:37:24,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:37:24,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:37:24,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:37:24,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:37:24,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:37:24,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:37:24,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:37:24,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:37:24,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:37:24,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:37:24,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:37:24,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:37:24,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:37:24,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:37:24,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:37:24,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:37:24,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:37:24,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:37:24,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:37:24,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:37:24,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:37:24,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:37:25,037 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:37:25,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:37:25,038 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:37:25,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:37:25,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:37:25,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:37:25,040 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:37:25,040 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:37:25,040 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:37:25,040 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:37:25,041 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:37:25,041 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:37:25,042 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:37:25,042 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:37:25,042 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:37:25,042 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:37:25,042 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:37:25,043 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:37:25,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:37:25,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:37:25,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:37:25,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:37:25,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:37:25,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:37:25,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:37:25,046 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:37:25,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:37:25,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:37:25,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:37:25,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:25,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:37:25,047 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:37:25,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:37:25,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:37:25,048 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:37:25,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:37:25,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:37:25,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:37:25,049 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_27fc1acc-a050-48cd-83e0-e1fdbecf3009/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5b351dc48b78577594847e2589a2433da4c3422ed74f69290b3f52d3ba2c2d2 [2022-10-17 17:37:25,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:37:25,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:37:25,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:37:25,365 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:37:25,366 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:37:25,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i [2022-10-17 17:37:25,456 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/data/0059f4231/21ce0de2a7e04945a450c72d5a0b3cbc/FLAG16486a818 [2022-10-17 17:37:26,225 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:37:26,226 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i [2022-10-17 17:37:26,255 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/data/0059f4231/21ce0de2a7e04945a450c72d5a0b3cbc/FLAG16486a818 [2022-10-17 17:37:26,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/data/0059f4231/21ce0de2a7e04945a450c72d5a0b3cbc [2022-10-17 17:37:26,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:37:26,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:37:26,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:26,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:37:26,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:37:26,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:26" (1/1) ... [2022-10-17 17:37:26,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15734d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:26, skipping insertion in model container [2022-10-17 17:37:26,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:26" (1/1) ... [2022-10-17 17:37:26,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:37:26,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:37:27,268 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_27fc1acc-a050-48cd-83e0-e1fdbecf3009/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i[106459,106472] [2022-10-17 17:37:27,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:27,370 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:37:27,548 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckException: Type check failed for C: rom_signature = rom_signature & 255U [2627] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckBinaryExpression(TypeCheckHelper.java:207) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.constructBinaryExpression(ExpressionFactory.java:597) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.newBinaryExpression(ExpressionFactory.java:132) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:483) 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: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 17:37:27,553 INFO L158 Benchmark]: Toolchain (without parser) took 1257.08ms. Allocated memory is still 130.0MB. Free memory was 90.1MB in the beginning and 57.4MB in the end (delta: 32.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-10-17 17:37:27,554 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory was 54.1MB in the beginning and 54.1MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:37:27,555 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1252.39ms. Allocated memory is still 130.0MB. Free memory was 89.7MB in the beginning and 57.4MB in the end (delta: 32.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-10-17 17:37:27,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory was 54.1MB in the beginning and 54.1MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1252.39ms. Allocated memory is still 130.0MB. Free memory was 89.7MB in the beginning and 57.4MB in the end (delta: 32.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: rom_signature = rom_signature & 255U [2627] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: rom_signature = rom_signature & 255U [2627]: de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) 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_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/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_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/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_27fc1acc-a050-48cd-83e0-e1fdbecf3009/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 a5b351dc48b78577594847e2589a2433da4c3422ed74f69290b3f52d3ba2c2d2 --- 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 17:37:30,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:37:30,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:37:30,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:37:30,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:37:30,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:37:30,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:37:30,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:37:30,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:37:30,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:37:30,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:37:30,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:37:30,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:37:30,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:37:30,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:37:30,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:37:30,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:37:30,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:37:30,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:37:30,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:37:30,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:37:30,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:37:30,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:37:30,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:37:30,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:37:30,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:37:30,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:37:30,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:37:30,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:37:30,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:37:30,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:37:30,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:37:30,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:37:30,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:37:30,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:37:30,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:37:30,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:37:30,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:37:30,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:37:30,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:37:30,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:37:30,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-10-17 17:37:30,163 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:37:30,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:37:30,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:37:30,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:37:30,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:37:30,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:37:30,167 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:37:30,167 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:37:30,168 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:37:30,168 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:37:30,168 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:37:30,169 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:37:30,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:37:30,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:37:30,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:37:30,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:37:30,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:37:30,172 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:37:30,172 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:37:30,172 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:37:30,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:37:30,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:37:30,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:37:30,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:37:30,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:37:30,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:37:30,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:30,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:37:30,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:37:30,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:37:30,175 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:37:30,175 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:37:30,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:37:30,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:37:30,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:37:30,176 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_27fc1acc-a050-48cd-83e0-e1fdbecf3009/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5b351dc48b78577594847e2589a2433da4c3422ed74f69290b3f52d3ba2c2d2 [2022-10-17 17:37:30,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:37:30,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:37:30,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:37:30,593 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:37:30,594 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:37:30,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i [2022-10-17 17:37:30,657 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/data/e798c0eed/83a0e4883aa34a08a2d03569ef21a98e/FLAGbca50cadd [2022-10-17 17:37:31,559 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:37:31,560 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i [2022-10-17 17:37:31,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/data/e798c0eed/83a0e4883aa34a08a2d03569ef21a98e/FLAGbca50cadd [2022-10-17 17:37:32,085 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/data/e798c0eed/83a0e4883aa34a08a2d03569ef21a98e [2022-10-17 17:37:32,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:37:32,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:37:32,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:32,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:37:32,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:37:32,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:32" (1/1) ... [2022-10-17 17:37:32,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e261a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:32, skipping insertion in model container [2022-10-17 17:37:32,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:32" (1/1) ... [2022-10-17 17:37:32,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:37:32,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:37:33,308 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_27fc1acc-a050-48cd-83e0-e1fdbecf3009/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i[106459,106472] [2022-10-17 17:37:33,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:33,389 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 17:37:33,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:37:33,608 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_27fc1acc-a050-48cd-83e0-e1fdbecf3009/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i[106459,106472] [2022-10-17 17:37:33,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:33,655 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:37:33,829 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_27fc1acc-a050-48cd-83e0-e1fdbecf3009/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i[106459,106472] [2022-10-17 17:37:33,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:33,923 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:37:33,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33 WrapperNode [2022-10-17 17:37:33,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:33,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:33,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:37:33,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:37:33,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,101 INFO L138 Inliner]: procedures = 137, calls = 740, calls flagged for inlining = 53, calls inlined = 47, statements flattened = 1889 [2022-10-17 17:37:34,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:34,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:37:34,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:37:34,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:37:34,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,246 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:37:34,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:37:34,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:37:34,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:37:34,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (1/1) ... [2022-10-17 17:37:34,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:34,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:34,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:37:34,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:37:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-10-17 17:37:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-10-17 17:37:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-10-17 17:37:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-10-17 17:37:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 17:37:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure pch_phub_remove [2022-10-17 17:37:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_phub_remove [2022-10-17 17:37:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-10-17 17:37:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-10-17 17:37:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_bin_file [2022-10-17 17:37:34,410 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_bin_file [2022-10-17 17:37:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure pch_phub_read_modify_write_reg [2022-10-17 17:37:34,410 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_phub_read_modify_write_reg [2022-10-17 17:37:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pch_phub_mutex [2022-10-17 17:37:34,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pch_phub_mutex [2022-10-17 17:37:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:37:34,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:37:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 17:37:34,411 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 17:37:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 17:37:34,411 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 17:37:34,412 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-10-17 17:37:34,412 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-10-17 17:37:34,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:37:34,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:37:34,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:37:34,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:37:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-10-17 17:37:34,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-10-17 17:37:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:37:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_file [2022-10-17 17:37:34,413 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_file [2022-10-17 17:37:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:37:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-10-17 17:37:34,414 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-10-17 17:37:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_rom [2022-10-17 17:37:34,414 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_rom [2022-10-17 17:37:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:37:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:37:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:37:34,415 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-10-17 17:37:34,415 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-10-17 17:37:34,415 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-10-17 17:37:34,415 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-10-17 17:37:34,415 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-10-17 17:37:34,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-10-17 17:37:34,416 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-10-17 17:37:34,416 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-10-17 17:37:34,416 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-10-17 17:37:34,416 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-10-17 17:37:34,416 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-10-17 17:37:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-10-17 17:37:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:37:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 17:37:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_pch_phub_mutex [2022-10-17 17:37:34,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_pch_phub_mutex [2022-10-17 17:37:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:37:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-10-17 17:37:34,418 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-10-17 17:37:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-10-17 17:37:34,418 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-10-17 17:37:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-10-17 17:37:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:37:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-10-17 17:37:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-10-17 17:37:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure pch_phub_write_serial_rom [2022-10-17 17:37:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_phub_write_serial_rom [2022-10-17 17:37:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:37:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:37:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2022-10-17 17:37:34,420 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2022-10-17 17:37:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure pch_phub_read_serial_rom [2022-10-17 17:37:34,420 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_phub_read_serial_rom [2022-10-17 17:37:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_rom [2022-10-17 17:37:34,420 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_rom [2022-10-17 17:37:34,940 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:37:34,943 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:37:43,800 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:37:43,814 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:37:43,814 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:37:43,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:43 BoogieIcfgContainer [2022-10-17 17:37:43,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:37:43,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:37:43,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:37:43,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:37:43,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:37:32" (1/3) ... [2022-10-17 17:37:43,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474fc0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:43, skipping insertion in model container [2022-10-17 17:37:43,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:33" (2/3) ... [2022-10-17 17:37:43,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474fc0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:43, skipping insertion in model container [2022-10-17 17:37:43,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:43" (3/3) ... [2022-10-17 17:37:43,831 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i [2022-10-17 17:37:43,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:37:43,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:37:43,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:37:43,928 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;@4277a67c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:37:43,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:37:43,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 606 states, 402 states have (on average 1.271144278606965) internal successors, (511), 412 states have internal predecessors, (511), 174 states have call successors, (174), 28 states have call predecessors, (174), 28 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2022-10-17 17:37:43,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:37:43,946 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:43,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:43,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:43,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:43,953 INFO L85 PathProgramCache]: Analyzing trace with hash -838784516, now seen corresponding path program 1 times [2022-10-17 17:37:43,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:37:43,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385724952] [2022-10-17 17:37:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:43,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:37:43,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:37:43,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:37:44,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:37:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:44,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:37:44,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:44,835 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 17:37:44,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:37:44,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:37:44,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385724952] [2022-10-17 17:37:44,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385724952] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:44,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:44,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:37:44,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109445101] [2022-10-17 17:37:44,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:44,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:37:44,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:37:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:37:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:44,895 INFO L87 Difference]: Start difference. First operand has 606 states, 402 states have (on average 1.271144278606965) internal successors, (511), 412 states have internal predecessors, (511), 174 states have call successors, (174), 28 states have call predecessors, (174), 28 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:37:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:45,284 INFO L93 Difference]: Finished difference Result 1792 states and 2597 transitions. [2022-10-17 17:37:45,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:37:45,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-17 17:37:45,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:45,328 INFO L225 Difference]: With dead ends: 1792 [2022-10-17 17:37:45,329 INFO L226 Difference]: Without dead ends: 1185 [2022-10-17 17:37:45,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:45,346 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 823 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:45,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1857 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:37:45,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2022-10-17 17:37:45,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1181. [2022-10-17 17:37:45,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 783 states have (on average 1.2630906768837804) internal successors, (989), 795 states have internal predecessors, (989), 343 states have call successors, (343), 55 states have call predecessors, (343), 54 states have return successors, (338), 338 states have call predecessors, (338), 338 states have call successors, (338) [2022-10-17 17:37:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1670 transitions. [2022-10-17 17:37:45,606 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1670 transitions. Word has length 15 [2022-10-17 17:37:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:45,606 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1670 transitions. [2022-10-17 17:37:45,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:37:45,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1670 transitions. [2022-10-17 17:37:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:37:45,609 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:45,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:45,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:37:45,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:37:45,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:45,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:45,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1677123996, now seen corresponding path program 1 times [2022-10-17 17:37:45,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:37:45,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944901087] [2022-10-17 17:37:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:45,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:37:45,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:37:45,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:37:45,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 17:37:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:46,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:37:46,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:46,595 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 17:37:46,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:37:46,596 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:37:46,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944901087] [2022-10-17 17:37:46,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944901087] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:46,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:46,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:37:46,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225994437] [2022-10-17 17:37:46,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:46,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:37:46,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:37:46,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:37:46,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:46,604 INFO L87 Difference]: Start difference. First operand 1181 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:37:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:46,842 INFO L93 Difference]: Finished difference Result 1199 states and 1690 transitions. [2022-10-17 17:37:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:37:46,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-17 17:37:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:46,854 INFO L225 Difference]: With dead ends: 1199 [2022-10-17 17:37:46,854 INFO L226 Difference]: Without dead ends: 1190 [2022-10-17 17:37:46,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:46,858 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 842 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:46,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 866 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:37:46,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-10-17 17:37:46,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1181. [2022-10-17 17:37:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 783 states have (on average 1.2618135376756066) internal successors, (988), 795 states have internal predecessors, (988), 343 states have call successors, (343), 55 states have call predecessors, (343), 54 states have return successors, (338), 338 states have call predecessors, (338), 338 states have call successors, (338) [2022-10-17 17:37:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1669 transitions. [2022-10-17 17:37:46,996 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1669 transitions. Word has length 18 [2022-10-17 17:37:46,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:46,996 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1669 transitions. [2022-10-17 17:37:46,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:37:46,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1669 transitions. [2022-10-17 17:37:46,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:37:46,999 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:46,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:47,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:37:47,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:37:47,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:47,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:47,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1619865694, now seen corresponding path program 1 times [2022-10-17 17:37:47,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:37:47,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718432541] [2022-10-17 17:37:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:47,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:37:47,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:37:47,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:37:47,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 17:37:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:47,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:37:47,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:47,895 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 17:37:47,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:37:47,895 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:37:47,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718432541] [2022-10-17 17:37:47,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718432541] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:47,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:47,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:37:47,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932664861] [2022-10-17 17:37:47,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:47,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:37:47,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:37:47,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:37:47,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:47,898 INFO L87 Difference]: Start difference. First operand 1181 states and 1669 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:37:48,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:48,129 INFO L93 Difference]: Finished difference Result 1183 states and 1670 transitions. [2022-10-17 17:37:48,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:37:48,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-17 17:37:48,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:48,141 INFO L225 Difference]: With dead ends: 1183 [2022-10-17 17:37:48,141 INFO L226 Difference]: Without dead ends: 1180 [2022-10-17 17:37:48,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:48,144 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 830 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:48,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 844 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:37:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-10-17 17:37:48,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1180. [2022-10-17 17:37:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 783 states have (on average 1.260536398467433) internal successors, (987), 794 states have internal predecessors, (987), 342 states have call successors, (342), 55 states have call predecessors, (342), 54 states have return successors, (338), 338 states have call predecessors, (338), 338 states have call successors, (338) [2022-10-17 17:37:48,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1667 transitions. [2022-10-17 17:37:48,315 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1667 transitions. Word has length 18 [2022-10-17 17:37:48,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:48,315 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1667 transitions. [2022-10-17 17:37:48,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:37:48,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1667 transitions. [2022-10-17 17:37:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:37:48,318 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:48,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:48,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:37:48,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:37:48,539 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:48,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:48,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1323407411, now seen corresponding path program 1 times [2022-10-17 17:37:48,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:37:48,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715524781] [2022-10-17 17:37:48,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:48,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:37:48,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:37:48,543 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:37:48,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 17:37:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:49,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:37:49,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:49,388 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 17:37:49,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:37:49,388 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:37:49,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715524781] [2022-10-17 17:37:49,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715524781] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:49,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:49,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:37:49,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596015583] [2022-10-17 17:37:49,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:49,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:37:49,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:37:49,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:37:49,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:49,391 INFO L87 Difference]: Start difference. First operand 1180 states and 1667 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:37:49,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:49,679 INFO L93 Difference]: Finished difference Result 1182 states and 1668 transitions. [2022-10-17 17:37:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:37:49,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-10-17 17:37:49,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:49,690 INFO L225 Difference]: With dead ends: 1182 [2022-10-17 17:37:49,690 INFO L226 Difference]: Without dead ends: 1179 [2022-10-17 17:37:49,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:49,693 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 827 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:49,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 842 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:37:49,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-10-17 17:37:49,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-10-17 17:37:49,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 783 states have (on average 1.2592592592592593) internal successors, (986), 793 states have internal predecessors, (986), 341 states have call successors, (341), 55 states have call predecessors, (341), 54 states have return successors, (338), 338 states have call predecessors, (338), 338 states have call successors, (338) [2022-10-17 17:37:49,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1665 transitions. [2022-10-17 17:37:49,895 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1665 transitions. Word has length 19 [2022-10-17 17:37:49,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:49,896 INFO L495 AbstractCegarLoop]: Abstraction has 1179 states and 1665 transitions. [2022-10-17 17:37:49,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:37:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1665 transitions. [2022-10-17 17:37:49,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 17:37:49,898 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:49,898 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] [2022-10-17 17:37:49,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:37:50,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:37:50,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:50,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:50,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1924401979, now seen corresponding path program 1 times [2022-10-17 17:37:50,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:37:50,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456770315] [2022-10-17 17:37:50,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:50,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:37:50,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:37:50,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:37:50,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 17:37:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:50,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:37:50,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:50,911 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 17:37:50,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:37:50,912 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:37:50,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456770315] [2022-10-17 17:37:50,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456770315] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:50,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:50,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:37:50,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185686689] [2022-10-17 17:37:50,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:50,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:37:50,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:37:50,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:37:50,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:50,914 INFO L87 Difference]: Start difference. First operand 1179 states and 1665 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:37:51,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:51,408 INFO L93 Difference]: Finished difference Result 3497 states and 4957 transitions. [2022-10-17 17:37:51,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:37:51,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-17 17:37:51,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:51,434 INFO L225 Difference]: With dead ends: 3497 [2022-10-17 17:37:51,434 INFO L226 Difference]: Without dead ends: 2315 [2022-10-17 17:37:51,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:51,445 INFO L413 NwaCegarLoop]: 1074 mSDtfsCounter, 821 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:51,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1888 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:37:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2022-10-17 17:37:51,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2300. [2022-10-17 17:37:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 1528 states have (on average 1.2604712041884816) internal successors, (1926), 1553 states have internal predecessors, (1926), 667 states have call successors, (667), 106 states have call predecessors, (667), 104 states have return successors, (668), 656 states have call predecessors, (668), 660 states have call successors, (668) [2022-10-17 17:37:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3261 transitions. [2022-10-17 17:37:51,820 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3261 transitions. Word has length 20 [2022-10-17 17:37:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:51,820 INFO L495 AbstractCegarLoop]: Abstraction has 2300 states and 3261 transitions. [2022-10-17 17:37:51,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:37:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3261 transitions. [2022-10-17 17:37:51,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-17 17:37:51,829 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:51,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:51,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:37:52,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:37:52,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:52,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:52,045 INFO L85 PathProgramCache]: Analyzing trace with hash 389432597, now seen corresponding path program 1 times [2022-10-17 17:37:52,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:37:52,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884452788] [2022-10-17 17:37:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:52,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:37:52,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:37:52,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:37:52,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 17:37:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:52,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:37:52,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:52,846 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 17:37:52,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:37:52,846 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:37:52,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884452788] [2022-10-17 17:37:52,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884452788] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:52,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:52,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:37:52,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801452806] [2022-10-17 17:37:52,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:52,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:37:52,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:37:52,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:37:52,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:52,849 INFO L87 Difference]: Start difference. First operand 2300 states and 3261 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-17 17:37:53,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:53,591 INFO L93 Difference]: Finished difference Result 6534 states and 9243 transitions. [2022-10-17 17:37:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:37:53,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2022-10-17 17:37:53,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:53,627 INFO L225 Difference]: With dead ends: 6534 [2022-10-17 17:37:53,627 INFO L226 Difference]: Without dead ends: 4237 [2022-10-17 17:37:53,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:53,643 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 686 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:53,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1837 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:37:53,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4237 states. [2022-10-17 17:37:54,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4237 to 4228. [2022-10-17 17:37:54,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4228 states, 2788 states have (on average 1.2503586800573887) internal successors, (3486), 2829 states have internal predecessors, (3486), 1243 states have call successors, (1243), 198 states have call predecessors, (1243), 196 states have return successors, (1244), 1232 states have call predecessors, (1244), 1236 states have call successors, (1244) [2022-10-17 17:37:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4228 states to 4228 states and 5973 transitions. [2022-10-17 17:37:54,427 INFO L78 Accepts]: Start accepts. Automaton has 4228 states and 5973 transitions. Word has length 49 [2022-10-17 17:37:54,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:54,427 INFO L495 AbstractCegarLoop]: Abstraction has 4228 states and 5973 transitions. [2022-10-17 17:37:54,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-17 17:37:54,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4228 states and 5973 transitions. [2022-10-17 17:37:54,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-17 17:37:54,436 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:54,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:54,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-10-17 17:37:54,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:37:54,653 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:54,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:54,654 INFO L85 PathProgramCache]: Analyzing trace with hash 222631348, now seen corresponding path program 1 times [2022-10-17 17:37:54,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:37:54,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091481307] [2022-10-17 17:37:54,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:54,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:37:54,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:37:54,657 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:37:54,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fc1acc-a050-48cd-83e0-e1fdbecf3009/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 17:37:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:55,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:37:55,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:37:55,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:37:55,515 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:37:55,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091481307] [2022-10-17 17:37:55,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091481307] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:55,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:55,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:37:55,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315485801] [2022-10-17 17:37:55,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:55,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:37:55,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:37:55,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:37:55,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:55,519 INFO L87 Difference]: Start difference. First operand 4228 states and 5973 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-17 17:37:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:56,464 INFO L93 Difference]: Finished difference Result 10430 states and 14743 transitions. [2022-10-17 17:37:56,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:37:56,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2022-10-17 17:37:56,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:56,528 INFO L225 Difference]: With dead ends: 10430 [2022-10-17 17:37:56,528 INFO L226 Difference]: Without dead ends: 6205 [2022-10-17 17:37:56,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:56,564 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 697 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:56,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 2351 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:37:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states.