./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e6823a3e354b35bf05bec5e81d72dc7306859bf56793457624e681693cebdf0b --- 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-6b4ec56 [2022-11-20 12:34:23,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:34:23,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:34:23,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:34:23,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:34:23,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:34:23,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:34:23,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:34:23,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:34:23,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:34:23,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:34:23,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:34:23,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:34:23,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:34:23,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:34:23,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:34:23,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:34:23,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:34:23,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:34:23,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:34:23,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:34:24,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:34:24,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:34:24,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:34:24,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:34:24,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:34:24,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:34:24,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:34:24,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:34:24,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:34:24,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:34:24,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:34:24,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:34:24,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:34:24,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:34:24,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:34:24,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:34:24,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:34:24,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:34:24,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:34:24,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:34:24,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:34:24,063 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:34:24,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:34:24,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:34:24,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:34:24,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:34:24,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:34:24,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:34:24,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:34:24,066 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:34:24,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:34:24,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:34:24,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:34:24,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:34:24,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:34:24,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:34:24,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:34:24,068 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:34:24,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:34:24,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:34:24,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:34:24,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:34:24,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:34:24,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:34:24,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:34:24,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:34:24,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:34:24,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:34:24,072 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:34:24,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:34:24,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:34:24,073 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_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6823a3e354b35bf05bec5e81d72dc7306859bf56793457624e681693cebdf0b [2022-11-20 12:34:24,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:34:24,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:34:24,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:34:24,431 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:34:24,432 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:34:24,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2022-11-20 12:34:27,329 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:34:27,902 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:34:27,902 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2022-11-20 12:34:27,954 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/data/ec85637fe/8545c3dfaccc45c78c906ea1b0ff7f4c/FLAGb0c4ef172 [2022-11-20 12:34:27,974 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/data/ec85637fe/8545c3dfaccc45c78c906ea1b0ff7f4c [2022-11-20 12:34:27,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:34:27,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:34:27,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:34:27,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:34:27,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:34:27,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:34:27" (1/1) ... [2022-11-20 12:34:27,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159249d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:27, skipping insertion in model container [2022-11-20 12:34:27,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:34:27" (1/1) ... [2022-11-20 12:34:27,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:34:28,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:34:28,837 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2061) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) 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:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) 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) [2022-11-20 12:34:28,845 INFO L158 Benchmark]: Toolchain (without parser) took 863.58ms. Allocated memory is still 182.5MB. Free memory was 145.2MB in the beginning and 89.7MB in the end (delta: 55.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-11-20 12:34:28,846 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 123.7MB. Free memory is still 97.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:34:28,847 INFO L158 Benchmark]: CACSL2BoogieTranslator took 859.51ms. Allocated memory is still 182.5MB. Free memory was 144.4MB in the beginning and 89.7MB in the end (delta: 54.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-11-20 12:34:28,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 123.7MB. Free memory is still 97.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 859.51ms. Allocated memory is still 182.5MB. Free memory was 144.4MB in the beginning and 89.7MB in the end (delta: 54.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e6823a3e354b35bf05bec5e81d72dc7306859bf56793457624e681693cebdf0b --- 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-6b4ec56 [2022-11-20 12:34:31,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:34:31,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:34:31,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:34:31,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:34:31,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:34:31,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:34:31,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:34:31,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:34:31,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:34:31,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:34:31,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:34:31,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:34:31,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:34:31,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:34:31,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:34:31,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:34:31,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:34:31,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:34:31,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:34:31,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:34:31,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:34:31,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:34:31,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:34:31,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:34:31,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:34:31,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:34:31,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:34:31,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:34:31,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:34:31,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:34:31,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:34:31,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:34:31,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:34:31,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:34:31,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:34:31,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:34:31,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:34:31,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:34:31,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:34:31,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:34:31,284 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 12:34:31,317 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:34:31,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:34:31,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:34:31,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:34:31,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:34:31,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:34:31,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:34:31,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:34:31,321 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:34:31,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:34:31,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:34:31,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:34:31,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:34:31,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:34:31,323 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:34:31,323 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:34:31,323 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:34:31,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:34:31,324 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:34:31,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:34:31,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:34:31,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:34:31,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:34:31,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:34:31,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:34:31,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:34:31,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:34:31,326 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:34:31,326 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:34:31,327 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:34:31,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:34:31,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:34:31,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:34:31,328 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_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6823a3e354b35bf05bec5e81d72dc7306859bf56793457624e681693cebdf0b [2022-11-20 12:34:31,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:34:31,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:34:31,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:34:31,735 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:34:31,736 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:34:31,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2022-11-20 12:34:34,974 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:34:35,565 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:34:35,565 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2022-11-20 12:34:35,612 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/data/b19d16594/604fae38a7fa4a3491fc6f3e571416f9/FLAGa972f2eb4 [2022-11-20 12:34:35,634 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/data/b19d16594/604fae38a7fa4a3491fc6f3e571416f9 [2022-11-20 12:34:35,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:34:35,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:34:35,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:34:35,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:34:35,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:34:35,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:34:35" (1/1) ... [2022-11-20 12:34:35,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c995da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:35, skipping insertion in model container [2022-11-20 12:34:35,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:34:35" (1/1) ... [2022-11-20 12:34:35,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:34:35,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:34:37,084 WARN L237 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_9ec61977-d7f8-4b10-9400-7fdd987f8350/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2022-11-20 12:34:37,123 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-20 12:34:37,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:34:37,174 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:34:37,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:34:37,542 WARN L237 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_9ec61977-d7f8-4b10-9400-7fdd987f8350/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2022-11-20 12:34:37,553 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-20 12:34:37,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:34:37,607 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:34:37,987 WARN L237 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_9ec61977-d7f8-4b10-9400-7fdd987f8350/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2022-11-20 12:34:37,994 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-20 12:34:37,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:34:38,124 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:34:38,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:38 WrapperNode [2022-11-20 12:34:38,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:34:38,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:34:38,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:34:38,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:34:38,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:38" (1/1) ... [2022-11-20 12:34:38,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:38" (1/1) ... [2022-11-20 12:34:38,419 INFO L138 Inliner]: procedures = 155, calls = 1103, calls flagged for inlining = 57, calls inlined = 55, statements flattened = 2393 [2022-11-20 12:34:38,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:34:38,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:34:38,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:34:38,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:34:38,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:38" (1/1) ... [2022-11-20 12:34:38,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:38" (1/1) ... [2022-11-20 12:34:38,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:38" (1/1) ... [2022-11-20 12:34:38,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:38" (1/1) ... [2022-11-20 12:34:38,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:38" (1/1) ... [2022-11-20 12:34:38,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:38" (1/1) ... [2022-11-20 12:34:38,649 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:38" (1/1) ... [2022-11-20 12:34:38,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:38" (1/1) ... [2022-11-20 12:34:38,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:34:38,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:34:38,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:34:38,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:34:38,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:38" (1/1) ... [2022-11-20 12:34:38,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:34:38,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:38,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:34:38,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:34:38,773 INFO L130 BoogieDeclarations]: Found specification of procedure atm_sk [2022-11-20 12:34:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_sk [2022-11-20 12:34:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 12:34:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-11-20 12:34:38,774 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-11-20 12:34:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure change_bit [2022-11-20 12:34:38,774 INFO L138 BoogieDeclarations]: Found implementation of procedure change_bit [2022-11-20 12:34:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure atm_alloc_charge [2022-11-20 12:34:38,775 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_alloc_charge [2022-11-20 12:34:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 12:34:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-20 12:34:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:34:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 12:34:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 12:34:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:34:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 12:34:38,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 12:34:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 12:34:38,777 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 12:34:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-20 12:34:38,777 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-20 12:34:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 12:34:38,778 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 12:34:38,779 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-20 12:34:38,779 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-20 12:34:38,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:34:38,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:34:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure sk_sleep [2022-11-20 12:34:38,781 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_sleep [2022-11-20 12:34:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-20 12:34:38,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-20 12:34:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_ioctl [2022-11-20 12:34:38,782 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_ioctl [2022-11-20 12:34:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 12:34:38,782 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 12:34:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:34:38,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:34:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 12:34:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 12:34:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 12:34:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 12:34:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:34:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:34:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 12:34:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 12:34:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 12:34:38,785 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 12:34:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_dev_close [2022-11-20 12:34:38,786 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_dev_close [2022-11-20 12:34:38,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 12:34:38,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 12:34:38,786 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:34:38,786 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:34:38,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:34:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 12:34:38,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 12:34:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure sk_atm [2022-11-20 12:34:38,788 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_atm [2022-11-20 12:34:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:34:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-20 12:34:38,788 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-20 12:34:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_send [2022-11-20 12:34:38,788 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_send [2022-11-20 12:34:38,789 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 12:34:38,789 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 12:34:38,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:34:38,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:34:38,789 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 12:34:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 12:34:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 12:34:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 12:34:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:34:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 12:34:38,791 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_create [2022-11-20 12:34:38,791 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_create [2022-11-20 12:34:38,792 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_close [2022-11-20 12:34:38,792 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_close [2022-11-20 12:34:38,792 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_deregister [2022-11-20 12:34:38,792 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_deregister [2022-11-20 12:34:38,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 12:34:38,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 12:34:38,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 12:34:38,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:34:38,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:34:38,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:34:38,794 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_close [2022-11-20 12:34:38,794 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_close [2022-11-20 12:34:38,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:34:38,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 12:34:38,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 12:34:38,795 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-20 12:34:38,795 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-20 12:34:38,796 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_put [2022-11-20 12:34:38,796 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_put [2022-11-20 12:34:38,796 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-20 12:34:38,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-20 12:34:38,796 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_lookup [2022-11-20 12:34:38,797 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_lookup [2022-11-20 12:34:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 12:34:38,797 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 12:34:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 12:34:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_send [2022-11-20 12:34:38,798 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_send [2022-11-20 12:34:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-20 12:34:38,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-20 12:34:38,799 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_send_control [2022-11-20 12:34:38,799 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_send_control [2022-11-20 12:34:38,800 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2022-11-20 12:34:38,801 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2022-11-20 12:34:38,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:34:38,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:34:38,804 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2022-11-20 12:34:38,806 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2022-11-20 12:34:39,385 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:34:39,389 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:34:44,775 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 12:35:07,019 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:35:07,041 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:35:07,046 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:35:07,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:35:07 BoogieIcfgContainer [2022-11-20 12:35:07,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:35:07,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:35:07,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:35:07,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:35:07,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:34:35" (1/3) ... [2022-11-20 12:35:07,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269c1159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:35:07, skipping insertion in model container [2022-11-20 12:35:07,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:38" (2/3) ... [2022-11-20 12:35:07,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269c1159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:35:07, skipping insertion in model container [2022-11-20 12:35:07,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:35:07" (3/3) ... [2022-11-20 12:35:07,063 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2022-11-20 12:35:07,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:35:07,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:35:07,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:35:07,160 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=PETRI_NET, 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;@29baaabf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:35:07,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:35:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 625 states, 447 states have (on average 1.342281879194631) internal successors, (600), 464 states have internal predecessors, (600), 137 states have call successors, (137), 40 states have call predecessors, (137), 39 states have return successors, (132), 129 states have call predecessors, (132), 132 states have call successors, (132) [2022-11-20 12:35:07,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 12:35:07,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:07,181 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:07,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:07,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:07,187 INFO L85 PathProgramCache]: Analyzing trace with hash 653302310, now seen corresponding path program 1 times [2022-11-20 12:35:07,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:07,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546190378] [2022-11-20 12:35:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:07,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:07,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:07,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:07,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 12:35:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:08,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:35:08,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-20 12:35:08,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:08,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:08,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546190378] [2022-11-20 12:35:08,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546190378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:08,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:08,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:35:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160210896] [2022-11-20 12:35:08,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:08,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:35:08,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:08,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:35:08,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:35:08,815 INFO L87 Difference]: Start difference. First operand has 625 states, 447 states have (on average 1.342281879194631) internal successors, (600), 464 states have internal predecessors, (600), 137 states have call successors, (137), 40 states have call predecessors, (137), 39 states have return successors, (132), 129 states have call predecessors, (132), 132 states have call successors, (132) Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 12:35:09,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:09,640 INFO L93 Difference]: Finished difference Result 1251 states and 1782 transitions. [2022-11-20 12:35:09,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:35:09,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 133 [2022-11-20 12:35:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:09,660 INFO L225 Difference]: With dead ends: 1251 [2022-11-20 12:35:09,660 INFO L226 Difference]: Without dead ends: 613 [2022-11-20 12:35:09,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:35:09,672 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 6 mSDsluCounter, 3420 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:09,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4279 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:35:09,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-11-20 12:35:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2022-11-20 12:35:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 442 states have (on average 1.3257918552036199) internal successors, (586), 452 states have internal predecessors, (586), 132 states have call successors, (132), 39 states have call predecessors, (132), 38 states have return successors, (130), 127 states have call predecessors, (130), 130 states have call successors, (130) [2022-11-20 12:35:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 848 transitions. [2022-11-20 12:35:09,782 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 848 transitions. Word has length 133 [2022-11-20 12:35:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:09,784 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 848 transitions. [2022-11-20 12:35:09,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 12:35:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 848 transitions. [2022-11-20 12:35:09,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-20 12:35:09,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:09,788 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:09,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:10,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:10,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:10,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:10,013 INFO L85 PathProgramCache]: Analyzing trace with hash 551984542, now seen corresponding path program 1 times [2022-11-20 12:35:10,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:10,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836775792] [2022-11-20 12:35:10,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:10,016 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:10,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:10,018 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:10,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 12:35:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:10,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:35:10,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-20 12:35:11,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-20 12:35:13,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:13,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836775792] [2022-11-20 12:35:13,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836775792] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:13,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:13,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-20 12:35:13,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513411632] [2022-11-20 12:35:13,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:13,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:35:13,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:13,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:35:13,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:35:13,650 INFO L87 Difference]: Start difference. First operand 613 states and 848 transitions. Second operand has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-20 12:35:15,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:15,346 INFO L93 Difference]: Finished difference Result 1221 states and 1698 transitions. [2022-11-20 12:35:15,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:35:15,348 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 135 [2022-11-20 12:35:15,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:15,358 INFO L225 Difference]: With dead ends: 1221 [2022-11-20 12:35:15,359 INFO L226 Difference]: Without dead ends: 619 [2022-11-20 12:35:15,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:35:15,363 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 8 mSDsluCounter, 7542 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8385 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:15,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 8385 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:35:15,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-11-20 12:35:15,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2022-11-20 12:35:15,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 446 states have (on average 1.3228699551569507) internal successors, (590), 456 states have internal predecessors, (590), 133 states have call successors, (133), 40 states have call predecessors, (133), 39 states have return successors, (131), 128 states have call predecessors, (131), 131 states have call successors, (131) [2022-11-20 12:35:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 854 transitions. [2022-11-20 12:35:15,410 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 854 transitions. Word has length 135 [2022-11-20 12:35:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:15,411 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 854 transitions. [2022-11-20 12:35:15,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-20 12:35:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 854 transitions. [2022-11-20 12:35:15,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-20 12:35:15,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:15,415 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:15,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:15,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:15,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:15,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:15,631 INFO L85 PathProgramCache]: Analyzing trace with hash -784279514, now seen corresponding path program 2 times [2022-11-20 12:35:15,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:15,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787541329] [2022-11-20 12:35:15,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:35:15,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:15,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:15,647 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:15,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 12:35:16,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:35:16,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:16,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:35:16,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2022-11-20 12:35:19,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:19,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:19,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787541329] [2022-11-20 12:35:19,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787541329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:19,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:19,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:35:19,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530674664] [2022-11-20 12:35:19,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:19,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:35:19,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:19,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:35:19,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:19,187 INFO L87 Difference]: Start difference. First operand 619 states and 854 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 12:35:19,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:19,346 INFO L93 Difference]: Finished difference Result 1797 states and 2493 transitions. [2022-11-20 12:35:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:35:19,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 137 [2022-11-20 12:35:19,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:19,355 INFO L225 Difference]: With dead ends: 1797 [2022-11-20 12:35:19,355 INFO L226 Difference]: Without dead ends: 1203 [2022-11-20 12:35:19,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:19,359 INFO L413 NwaCegarLoop]: 1118 mSDtfsCounter, 784 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:19,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1928 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:35:19,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-11-20 12:35:19,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1200. [2022-11-20 12:35:19,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 869 states have (on average 1.327963176064442) internal successors, (1154), 888 states have internal predecessors, (1154), 254 states have call successors, (254), 77 states have call predecessors, (254), 76 states have return successors, (252), 246 states have call predecessors, (252), 252 states have call successors, (252) [2022-11-20 12:35:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1660 transitions. [2022-11-20 12:35:19,420 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1660 transitions. Word has length 137 [2022-11-20 12:35:19,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:19,421 INFO L495 AbstractCegarLoop]: Abstraction has 1200 states and 1660 transitions. [2022-11-20 12:35:19,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 12:35:19,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1660 transitions. [2022-11-20 12:35:19,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-20 12:35:19,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:19,426 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:19,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:19,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:19,640 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:19,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash -122962978, now seen corresponding path program 1 times [2022-11-20 12:35:19,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:19,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659752096] [2022-11-20 12:35:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:19,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:19,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:19,646 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:19,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 12:35:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:20,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:35:20,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-20 12:35:21,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-11-20 12:35:23,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:23,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659752096] [2022-11-20 12:35:23,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659752096] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:23,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:23,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-20 12:35:23,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667320303] [2022-11-20 12:35:23,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:23,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:35:23,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:23,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:35:23,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:35:23,653 INFO L87 Difference]: Start difference. First operand 1200 states and 1660 transitions. Second operand has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:35:25,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:25,191 INFO L93 Difference]: Finished difference Result 2391 states and 3328 transitions. [2022-11-20 12:35:25,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:35:25,192 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 154 [2022-11-20 12:35:25,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:25,199 INFO L225 Difference]: With dead ends: 2391 [2022-11-20 12:35:25,200 INFO L226 Difference]: Without dead ends: 1202 [2022-11-20 12:35:25,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:35:25,205 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 13 mSDsluCounter, 5869 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6712 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:25,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 6712 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:35:25,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-11-20 12:35:25,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1202. [2022-11-20 12:35:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 871 states have (on average 1.3272101033295063) internal successors, (1156), 890 states have internal predecessors, (1156), 254 states have call successors, (254), 77 states have call predecessors, (254), 76 states have return successors, (252), 246 states have call predecessors, (252), 252 states have call successors, (252) [2022-11-20 12:35:25,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1662 transitions. [2022-11-20 12:35:25,255 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1662 transitions. Word has length 154 [2022-11-20 12:35:25,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:25,256 INFO L495 AbstractCegarLoop]: Abstraction has 1202 states and 1662 transitions. [2022-11-20 12:35:25,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:35:25,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1662 transitions. [2022-11-20 12:35:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 12:35:25,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:25,259 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:25,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-20 12:35:25,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:25,478 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:25,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash 865547622, now seen corresponding path program 2 times [2022-11-20 12:35:25,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:25,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483119072] [2022-11-20 12:35:25,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:35:25,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:25,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:25,482 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:25,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 12:35:26,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:35:26,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:26,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:35:26,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-20 12:35:26,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:26,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:26,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483119072] [2022-11-20 12:35:26,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483119072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:26,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:26,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:35:26,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081984344] [2022-11-20 12:35:26,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:26,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:35:26,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:26,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:35:26,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:26,436 INFO L87 Difference]: Start difference. First operand 1202 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:35:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:26,691 INFO L93 Difference]: Finished difference Result 2201 states and 3027 transitions. [2022-11-20 12:35:26,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:35:26,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 156 [2022-11-20 12:35:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:26,698 INFO L225 Difference]: With dead ends: 2201 [2022-11-20 12:35:26,698 INFO L226 Difference]: Without dead ends: 1028 [2022-11-20 12:35:26,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:26,703 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 709 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:26,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 715 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:35:26,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2022-11-20 12:35:26,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1028. [2022-11-20 12:35:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 747 states have (on average 1.319946452476573) internal successors, (986), 760 states have internal predecessors, (986), 208 states have call successors, (208), 73 states have call predecessors, (208), 72 states have return successors, (206), 202 states have call predecessors, (206), 206 states have call successors, (206) [2022-11-20 12:35:26,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1400 transitions. [2022-11-20 12:35:26,758 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1400 transitions. Word has length 156 [2022-11-20 12:35:26,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:26,759 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1400 transitions. [2022-11-20 12:35:26,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:35:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1400 transitions. [2022-11-20 12:35:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-20 12:35:26,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:26,763 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:26,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:26,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:26,986 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:26,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:26,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1850370297, now seen corresponding path program 1 times [2022-11-20 12:35:26,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:26,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525538729] [2022-11-20 12:35:26,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:26,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:26,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:26,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:27,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 12:35:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:28,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:35:28,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-20 12:35:28,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-20 12:35:31,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:31,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525538729] [2022-11-20 12:35:31,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525538729] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:31,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:31,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-20 12:35:31,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680035815] [2022-11-20 12:35:31,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:31,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:35:31,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:31,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:35:31,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:35:31,883 INFO L87 Difference]: Start difference. First operand 1028 states and 1400 transitions. Second operand has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 15 states have internal predecessors, (97), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:35:34,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:34,047 INFO L93 Difference]: Finished difference Result 2047 states and 2808 transitions. [2022-11-20 12:35:34,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:35:34,048 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 15 states have internal predecessors, (97), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 173 [2022-11-20 12:35:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:34,054 INFO L225 Difference]: With dead ends: 2047 [2022-11-20 12:35:34,054 INFO L226 Difference]: Without dead ends: 1030 [2022-11-20 12:35:34,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:35:34,058 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 10 mSDsluCounter, 6366 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 7078 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:34,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 7078 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:35:34,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-20 12:35:34,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1030. [2022-11-20 12:35:34,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 749 states have (on average 1.3190921228304406) internal successors, (988), 762 states have internal predecessors, (988), 208 states have call successors, (208), 73 states have call predecessors, (208), 72 states have return successors, (206), 202 states have call predecessors, (206), 206 states have call successors, (206) [2022-11-20 12:35:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1402 transitions. [2022-11-20 12:35:34,112 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1402 transitions. Word has length 173 [2022-11-20 12:35:34,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:34,112 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1402 transitions. [2022-11-20 12:35:34,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 15 states have internal predecessors, (97), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:35:34,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1402 transitions. [2022-11-20 12:35:34,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-20 12:35:34,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:34,117 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:34,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:34,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:34,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:34,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1083564159, now seen corresponding path program 2 times [2022-11-20 12:35:34,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:34,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952210210] [2022-11-20 12:35:34,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:35:34,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:34,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:34,336 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:34,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 12:35:34,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:35:34,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:34,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:35:34,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-11-20 12:35:35,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:35,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:35,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952210210] [2022-11-20 12:35:35,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952210210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:35,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:35,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:35:35,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066132040] [2022-11-20 12:35:35,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:35,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:35:35,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:35,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:35:35,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:35,760 INFO L87 Difference]: Start difference. First operand 1030 states and 1402 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:35:36,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:36,161 INFO L93 Difference]: Finished difference Result 3021 states and 4119 transitions. [2022-11-20 12:35:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:35:36,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 175 [2022-11-20 12:35:36,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:36,177 INFO L225 Difference]: With dead ends: 3021 [2022-11-20 12:35:36,177 INFO L226 Difference]: Without dead ends: 2020 [2022-11-20 12:35:36,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:36,182 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 636 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:36,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1562 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:35:36,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2022-11-20 12:35:36,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2016. [2022-11-20 12:35:36,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1469 states have (on average 1.3206262763784888) internal successors, (1940), 1494 states have internal predecessors, (1940), 404 states have call successors, (404), 143 states have call predecessors, (404), 142 states have return successors, (402), 394 states have call predecessors, (402), 402 states have call successors, (402) [2022-11-20 12:35:36,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2746 transitions. [2022-11-20 12:35:36,299 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2746 transitions. Word has length 175 [2022-11-20 12:35:36,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:36,300 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 2746 transitions. [2022-11-20 12:35:36,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:35:36,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2746 transitions. [2022-11-20 12:35:36,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-20 12:35:36,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:36,305 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:36,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:36,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:36,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:36,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:36,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1216301736, now seen corresponding path program 1 times [2022-11-20 12:35:36,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:36,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226242208] [2022-11-20 12:35:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:36,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:36,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:36,525 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:36,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 12:35:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:37,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:35:37,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 33 proven. 10 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-20 12:35:38,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:42,248 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-11-20 12:35:42,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:42,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226242208] [2022-11-20 12:35:42,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226242208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:42,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:42,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-20 12:35:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148431803] [2022-11-20 12:35:42,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:42,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:35:42,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:42,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:35:42,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:35:42,252 INFO L87 Difference]: Start difference. First operand 2016 states and 2746 transitions. Second operand has 17 states, 15 states have (on average 6.8) internal successors, (102), 17 states have internal predecessors, (102), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-20 12:35:45,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:45,379 INFO L93 Difference]: Finished difference Result 4032 states and 5533 transitions. [2022-11-20 12:35:45,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:35:45,380 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.8) internal successors, (102), 17 states have internal predecessors, (102), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 182 [2022-11-20 12:35:45,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:45,397 INFO L225 Difference]: With dead ends: 4032 [2022-11-20 12:35:45,398 INFO L226 Difference]: Without dead ends: 2028 [2022-11-20 12:35:45,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:35:45,407 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 20 mSDsluCounter, 6370 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 7083 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:45,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 7083 Invalid, 199 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 12:35:45,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-11-20 12:35:45,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2028. [2022-11-20 12:35:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 1480 states have (on average 1.318918918918919) internal successors, (1952), 1505 states have internal predecessors, (1952), 404 states have call successors, (404), 144 states have call predecessors, (404), 143 states have return successors, (402), 394 states have call predecessors, (402), 402 states have call successors, (402) [2022-11-20 12:35:45,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 2758 transitions. [2022-11-20 12:35:45,519 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 2758 transitions. Word has length 182 [2022-11-20 12:35:45,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:45,520 INFO L495 AbstractCegarLoop]: Abstraction has 2028 states and 2758 transitions. [2022-11-20 12:35:45,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.8) internal successors, (102), 17 states have internal predecessors, (102), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-20 12:35:45,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 2758 transitions. [2022-11-20 12:35:45,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-20 12:35:45,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:45,525 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:45,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:45,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:45,740 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:45,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:45,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1013021780, now seen corresponding path program 2 times [2022-11-20 12:35:45,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:45,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509190164] [2022-11-20 12:35:45,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:35:45,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:45,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:45,743 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:45,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 12:35:46,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:35:46,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:46,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:35:46,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-20 12:35:46,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:46,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:46,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509190164] [2022-11-20 12:35:46,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509190164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:46,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:46,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:35:46,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203020655] [2022-11-20 12:35:46,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:46,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:35:46,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:46,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:35:46,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:46,646 INFO L87 Difference]: Start difference. First operand 2028 states and 2758 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 12:35:47,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:47,031 INFO L93 Difference]: Finished difference Result 5456 states and 7431 transitions. [2022-11-20 12:35:47,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:35:47,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 183 [2022-11-20 12:35:47,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:47,051 INFO L225 Difference]: With dead ends: 5456 [2022-11-20 12:35:47,051 INFO L226 Difference]: Without dead ends: 3461 [2022-11-20 12:35:47,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:47,061 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 527 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:47,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1499 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:35:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2022-11-20 12:35:47,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3454. [2022-11-20 12:35:47,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 2522 states have (on average 1.3251387787470261) internal successors, (3342), 2563 states have internal predecessors, (3342), 682 states have call successors, (682), 250 states have call predecessors, (682), 249 states have return successors, (680), 672 states have call predecessors, (680), 680 states have call successors, (680) [2022-11-20 12:35:47,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 4704 transitions. [2022-11-20 12:35:47,323 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 4704 transitions. Word has length 183 [2022-11-20 12:35:47,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:47,324 INFO L495 AbstractCegarLoop]: Abstraction has 3454 states and 4704 transitions. [2022-11-20 12:35:47,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 12:35:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 4704 transitions. [2022-11-20 12:35:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-20 12:35:47,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:47,331 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:47,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-20 12:35:47,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:47,555 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash 145557291, now seen corresponding path program 1 times [2022-11-20 12:35:47,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:47,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492810713] [2022-11-20 12:35:47,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:47,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:47,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:47,558 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:47,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 12:35:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:48,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:35:48,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:49,730 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-20 12:35:49,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-20 12:35:54,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:54,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492810713] [2022-11-20 12:35:54,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492810713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:54,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:54,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-20 12:35:54,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895144799] [2022-11-20 12:35:54,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:54,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 12:35:54,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:54,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 12:35:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:35:54,193 INFO L87 Difference]: Start difference. First operand 3454 states and 4704 transitions. Second operand has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 19 states have internal predecessors, (108), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:35:57,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:57,907 INFO L93 Difference]: Finished difference Result 6904 states and 9466 transitions. [2022-11-20 12:35:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:35:57,908 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 19 states have internal predecessors, (108), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 187 [2022-11-20 12:35:57,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:57,931 INFO L225 Difference]: With dead ends: 6904 [2022-11-20 12:35:57,931 INFO L226 Difference]: Without dead ends: 3462 [2022-11-20 12:35:57,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-11-20 12:35:57,946 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 31 mSDsluCounter, 6372 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 7086 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:57,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 7086 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 12:35:57,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2022-11-20 12:35:58,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 3462. [2022-11-20 12:35:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 2530 states have (on average 1.3241106719367588) internal successors, (3350), 2571 states have internal predecessors, (3350), 682 states have call successors, (682), 250 states have call predecessors, (682), 249 states have return successors, (680), 672 states have call predecessors, (680), 680 states have call successors, (680) [2022-11-20 12:35:58,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 4712 transitions. [2022-11-20 12:35:58,229 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 4712 transitions. Word has length 187 [2022-11-20 12:35:58,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:58,229 INFO L495 AbstractCegarLoop]: Abstraction has 3462 states and 4712 transitions. [2022-11-20 12:35:58,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 19 states have internal predecessors, (108), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:35:58,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 4712 transitions. [2022-11-20 12:35:58,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 12:35:58,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:58,238 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:58,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:58,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:58,461 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:58,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:58,461 INFO L85 PathProgramCache]: Analyzing trace with hash -201535321, now seen corresponding path program 2 times [2022-11-20 12:35:58,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:58,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255381764] [2022-11-20 12:35:58,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:35:58,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:58,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:58,464 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:58,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 12:36:01,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:36:01,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:36:01,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:36:01,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 43 proven. 21 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-20 12:36:03,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-20 12:36:08,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:36:08,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255381764] [2022-11-20 12:36:08,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255381764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:08,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:36:08,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-11-20 12:36:08,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005401405] [2022-11-20 12:36:08,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:08,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:36:08,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:36:08,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:36:08,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:36:08,241 INFO L87 Difference]: Start difference. First operand 3462 states and 4712 transitions. Second operand has 21 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 21 states have internal predecessors, (110), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:36:13,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:13,019 INFO L93 Difference]: Finished difference Result 6920 states and 9482 transitions. [2022-11-20 12:36:13,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:36:13,020 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 21 states have internal predecessors, (110), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 188 [2022-11-20 12:36:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:13,041 INFO L225 Difference]: With dead ends: 6920 [2022-11-20 12:36:13,042 INFO L226 Difference]: Without dead ends: 3470 [2022-11-20 12:36:13,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:36:13,056 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 26 mSDsluCounter, 9911 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 10625 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:13,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 10625 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 12:36:13,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2022-11-20 12:36:13,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 3470. [2022-11-20 12:36:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3470 states, 2538 states have (on average 1.3230890464933018) internal successors, (3358), 2579 states have internal predecessors, (3358), 682 states have call successors, (682), 250 states have call predecessors, (682), 249 states have return successors, (680), 672 states have call predecessors, (680), 680 states have call successors, (680) [2022-11-20 12:36:13,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3470 states to 3470 states and 4720 transitions. [2022-11-20 12:36:13,307 INFO L78 Accepts]: Start accepts. Automaton has 3470 states and 4720 transitions. Word has length 188 [2022-11-20 12:36:13,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:13,308 INFO L495 AbstractCegarLoop]: Abstraction has 3470 states and 4720 transitions. [2022-11-20 12:36:13,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 21 states have internal predecessors, (110), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:36:13,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3470 states and 4720 transitions. [2022-11-20 12:36:13,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-20 12:36:13,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:13,315 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:13,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:13,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:13,536 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:13,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:13,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1923495595, now seen corresponding path program 3 times [2022-11-20 12:36:13,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:36:13,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097282181] [2022-11-20 12:36:13,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:36:13,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:13,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:36:13,541 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:36:13,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 12:36:16,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:36:16,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:36:16,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:36:16,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:16,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:36:16,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:36:16,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:36:16,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:36:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-11-20 12:36:16,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:36:16,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:36:16,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097282181] [2022-11-20 12:36:16,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097282181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:16,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:16,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:36:16,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037277701] [2022-11-20 12:36:16,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:16,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:36:16,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:36:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:36:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:36:16,586 INFO L87 Difference]: Start difference. First operand 3470 states and 4720 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:36:17,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:36:20,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:36:23,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:36:25,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:36:28,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:36:28,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:28,789 INFO L93 Difference]: Finished difference Result 6907 states and 9407 transitions. [2022-11-20 12:36:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:36:28,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 189 [2022-11-20 12:36:28,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:28,816 INFO L225 Difference]: With dead ends: 6907 [2022-11-20 12:36:28,817 INFO L226 Difference]: Without dead ends: 3482 [2022-11-20 12:36:28,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:36:28,829 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 3 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:28,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2058 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 4 Unknown, 0 Unchecked, 11.9s Time] [2022-11-20 12:36:28,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2022-11-20 12:36:29,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3478. [2022-11-20 12:36:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 2546 states have (on average 1.3220738413197173) internal successors, (3366), 2587 states have internal predecessors, (3366), 682 states have call successors, (682), 250 states have call predecessors, (682), 249 states have return successors, (680), 672 states have call predecessors, (680), 680 states have call successors, (680) [2022-11-20 12:36:29,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 4728 transitions. [2022-11-20 12:36:29,075 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 4728 transitions. Word has length 189 [2022-11-20 12:36:29,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:29,075 INFO L495 AbstractCegarLoop]: Abstraction has 3478 states and 4728 transitions. [2022-11-20 12:36:29,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:36:29,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 4728 transitions. [2022-11-20 12:36:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-20 12:36:29,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:29,082 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:29,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:29,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:29,306 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:29,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:29,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2080493221, now seen corresponding path program 1 times [2022-11-20 12:36:29,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:36:29,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260368015] [2022-11-20 12:36:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:29,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:29,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:36:29,310 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:36:29,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 12:36:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:30,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:36:30,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 48 proven. 28 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-20 12:36:32,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-20 12:36:41,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:36:41,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260368015] [2022-11-20 12:36:41,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260368015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:41,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:36:41,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-11-20 12:36:41,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081096859] [2022-11-20 12:36:41,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:41,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 12:36:41,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:36:41,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 12:36:41,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:36:41,569 INFO L87 Difference]: Start difference. First operand 3478 states and 4728 transitions. Second operand has 23 states, 21 states have (on average 5.809523809523809) internal successors, (122), 23 states have internal predecessors, (122), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-20 12:36:47,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:47,804 INFO L93 Difference]: Finished difference Result 6952 states and 9514 transitions. [2022-11-20 12:36:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:36:47,806 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 5.809523809523809) internal successors, (122), 23 states have internal predecessors, (122), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 196 [2022-11-20 12:36:47,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:47,826 INFO L225 Difference]: With dead ends: 6952 [2022-11-20 12:36:47,826 INFO L226 Difference]: Without dead ends: 3486 [2022-11-20 12:36:47,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2022-11-20 12:36:47,840 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 39 mSDsluCounter, 6374 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 7088 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:47,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 7088 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 12:36:47,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-11-20 12:36:48,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3486. [2022-11-20 12:36:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 2554 states have (on average 1.3210649960845733) internal successors, (3374), 2595 states have internal predecessors, (3374), 682 states have call successors, (682), 250 states have call predecessors, (682), 249 states have return successors, (680), 672 states have call predecessors, (680), 680 states have call successors, (680) [2022-11-20 12:36:48,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4736 transitions. [2022-11-20 12:36:48,098 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4736 transitions. Word has length 196 [2022-11-20 12:36:48,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:48,100 INFO L495 AbstractCegarLoop]: Abstraction has 3486 states and 4736 transitions. [2022-11-20 12:36:48,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 5.809523809523809) internal successors, (122), 23 states have internal predecessors, (122), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-20 12:36:48,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4736 transitions. [2022-11-20 12:36:48,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-20 12:36:48,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:48,107 INFO L195 NwaCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:48,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:48,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:48,328 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:48,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:48,329 INFO L85 PathProgramCache]: Analyzing trace with hash -554478753, now seen corresponding path program 2 times [2022-11-20 12:36:48,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:36:48,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298791056] [2022-11-20 12:36:48,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:36:48,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:48,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:36:48,331 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:36:48,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 12:36:51,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:36:51,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:36:51,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:36:51,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2022-11-20 12:36:52,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:36:52,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:36:52,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298791056] [2022-11-20 12:36:52,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298791056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:52,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:52,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:36:52,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402720167] [2022-11-20 12:36:52,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:52,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:36:52,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:36:52,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:36:52,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:36:52,269 INFO L87 Difference]: Start difference. First operand 3486 states and 4736 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-20 12:36:53,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:53,821 INFO L93 Difference]: Finished difference Result 8233 states and 11523 transitions. [2022-11-20 12:36:53,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:36:53,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 197 [2022-11-20 12:36:53,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:53,850 INFO L225 Difference]: With dead ends: 8233 [2022-11-20 12:36:53,851 INFO L226 Difference]: Without dead ends: 4792 [2022-11-20 12:36:53,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:36:53,864 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 575 mSDsluCounter, 4143 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 5046 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:53,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 5046 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:36:53,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4792 states. [2022-11-20 12:36:54,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4792 to 3510. [2022-11-20 12:36:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 2574 states have (on average 1.3185703185703186) internal successors, (3394), 2615 states have internal predecessors, (3394), 682 states have call successors, (682), 250 states have call predecessors, (682), 253 states have return successors, (688), 676 states have call predecessors, (688), 680 states have call successors, (688) [2022-11-20 12:36:54,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 4764 transitions. [2022-11-20 12:36:54,193 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 4764 transitions. Word has length 197 [2022-11-20 12:36:54,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:54,195 INFO L495 AbstractCegarLoop]: Abstraction has 3510 states and 4764 transitions. [2022-11-20 12:36:54,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-20 12:36:54,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 4764 transitions. [2022-11-20 12:36:54,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-20 12:36:54,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:54,213 INFO L195 NwaCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:54,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:54,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:54,428 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:54,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:54,429 INFO L85 PathProgramCache]: Analyzing trace with hash 133179952, now seen corresponding path program 1 times [2022-11-20 12:36:54,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:36:54,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979217317] [2022-11-20 12:36:54,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:54,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:54,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:36:54,432 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:36:54,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 12:36:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:55,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:36:55,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:56,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:36:56,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:36:56,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:36:56,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:36:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2022-11-20 12:36:57,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:36:57,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:36:57,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979217317] [2022-11-20 12:36:57,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979217317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:57,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:57,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:36:57,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802097466] [2022-11-20 12:36:57,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:57,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:36:57,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:36:57,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:36:57,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:36:57,276 INFO L87 Difference]: Start difference. First operand 3510 states and 4764 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 12:37:01,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:37:05,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:37:07,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:37:09,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:37:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:10,392 INFO L93 Difference]: Finished difference Result 7019 states and 9563 transitions. [2022-11-20 12:37:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:37:10,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 201 [2022-11-20 12:37:10,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:10,416 INFO L225 Difference]: With dead ends: 7019 [2022-11-20 12:37:10,417 INFO L226 Difference]: Without dead ends: 3554 [2022-11-20 12:37:10,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:37:10,426 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 4 mSDsluCounter, 4179 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4892 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:10,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4892 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 4 Unknown, 0 Unchecked, 12.4s Time] [2022-11-20 12:37:10,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2022-11-20 12:37:10,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3534. [2022-11-20 12:37:10,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3534 states, 2590 states have (on average 1.3166023166023166) internal successors, (3410), 2631 states have internal predecessors, (3410), 682 states have call successors, (682), 250 states have call predecessors, (682), 261 states have return successors, (720), 684 states have call predecessors, (720), 680 states have call successors, (720) [2022-11-20 12:37:10,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3534 states to 3534 states and 4812 transitions. [2022-11-20 12:37:10,665 INFO L78 Accepts]: Start accepts. Automaton has 3534 states and 4812 transitions. Word has length 201 [2022-11-20 12:37:10,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:10,666 INFO L495 AbstractCegarLoop]: Abstraction has 3534 states and 4812 transitions. [2022-11-20 12:37:10,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 12:37:10,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3534 states and 4812 transitions. [2022-11-20 12:37:10,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-20 12:37:10,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:10,674 INFO L195 NwaCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:10,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:37:10,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:10,888 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:10,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:10,889 INFO L85 PathProgramCache]: Analyzing trace with hash 203555927, now seen corresponding path program 1 times [2022-11-20 12:37:10,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:37:10,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189526454] [2022-11-20 12:37:10,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:10,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:10,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:37:10,892 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:37:10,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 12:37:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:12,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:37:12,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:37:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2022-11-20 12:37:13,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:37:13,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:37:13,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189526454] [2022-11-20 12:37:13,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189526454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:13,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:13,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:37:13,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666073885] [2022-11-20 12:37:13,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:13,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:37:13,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:37:13,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:37:13,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:37:13,913 INFO L87 Difference]: Start difference. First operand 3534 states and 4812 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 12:37:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:14,878 INFO L93 Difference]: Finished difference Result 7818 states and 10835 transitions. [2022-11-20 12:37:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:37:14,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 208 [2022-11-20 12:37:14,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:14,896 INFO L225 Difference]: With dead ends: 7818 [2022-11-20 12:37:14,896 INFO L226 Difference]: Without dead ends: 4329 [2022-11-20 12:37:14,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:37:14,904 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 148 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 5257 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:14,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 5257 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:37:14,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2022-11-20 12:37:15,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 3542. [2022-11-20 12:37:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 2598 states have (on average 1.3156274056966897) internal successors, (3418), 2635 states have internal predecessors, (3418), 682 states have call successors, (682), 250 states have call predecessors, (682), 261 states have return successors, (720), 688 states have call predecessors, (720), 680 states have call successors, (720) [2022-11-20 12:37:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 4820 transitions. [2022-11-20 12:37:15,193 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 4820 transitions. Word has length 208 [2022-11-20 12:37:15,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:15,193 INFO L495 AbstractCegarLoop]: Abstraction has 3542 states and 4820 transitions. [2022-11-20 12:37:15,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 12:37:15,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 4820 transitions. [2022-11-20 12:37:15,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-20 12:37:15,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:15,201 INFO L195 NwaCegarLoop]: trace histogram [12, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:15,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:37:15,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:15,418 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:15,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1558303520, now seen corresponding path program 1 times [2022-11-20 12:37:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:37:15,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005097163] [2022-11-20 12:37:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:15,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:15,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:37:15,421 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:37:15,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 12:37:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:16,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:37:16,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:37:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-20 12:37:16,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:37:16,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:37:16,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005097163] [2022-11-20 12:37:16,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005097163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:16,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:16,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:37:16,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876892011] [2022-11-20 12:37:16,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:16,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:37:16,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:37:16,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:37:16,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:37:16,868 INFO L87 Difference]: Start difference. First operand 3542 states and 4820 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-20 12:37:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:17,766 INFO L93 Difference]: Finished difference Result 8337 states and 11679 transitions. [2022-11-20 12:37:17,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:37:17,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 207 [2022-11-20 12:37:17,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:17,783 INFO L225 Difference]: With dead ends: 8337 [2022-11-20 12:37:17,784 INFO L226 Difference]: Without dead ends: 4840 [2022-11-20 12:37:17,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:37:17,795 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 339 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:17,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2520 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:37:17,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4840 states. [2022-11-20 12:37:18,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4840 to 3542. [2022-11-20 12:37:18,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 2598 states have (on average 1.3156274056966897) internal successors, (3418), 2635 states have internal predecessors, (3418), 682 states have call successors, (682), 250 states have call predecessors, (682), 261 states have return successors, (720), 688 states have call predecessors, (720), 680 states have call successors, (720) [2022-11-20 12:37:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 4820 transitions. [2022-11-20 12:37:18,172 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 4820 transitions. Word has length 207 [2022-11-20 12:37:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:18,173 INFO L495 AbstractCegarLoop]: Abstraction has 3542 states and 4820 transitions. [2022-11-20 12:37:18,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-20 12:37:18,173 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 4820 transitions. [2022-11-20 12:37:18,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-20 12:37:18,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:18,179 INFO L195 NwaCegarLoop]: trace histogram [12, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:18,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:37:18,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:18,393 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:18,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash 432697098, now seen corresponding path program 1 times [2022-11-20 12:37:18,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:37:18,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957545932] [2022-11-20 12:37:18,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:18,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:18,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:37:18,401 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:37:18,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 12:37:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:19,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:37:19,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:37:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-20 12:37:19,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:37:19,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:37:19,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957545932] [2022-11-20 12:37:19,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957545932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:19,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:19,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:37:19,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359712529] [2022-11-20 12:37:19,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:19,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:37:19,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:37:19,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:37:19,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:37:19,847 INFO L87 Difference]: Start difference. First operand 3542 states and 4820 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-20 12:37:20,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:20,772 INFO L93 Difference]: Finished difference Result 8337 states and 11679 transitions. [2022-11-20 12:37:20,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:37:20,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 208 [2022-11-20 12:37:20,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:20,796 INFO L225 Difference]: With dead ends: 8337 [2022-11-20 12:37:20,796 INFO L226 Difference]: Without dead ends: 4840 [2022-11-20 12:37:20,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:37:20,806 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 339 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:20,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2520 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:37:20,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4840 states. [2022-11-20 12:37:21,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4840 to 3542. [2022-11-20 12:37:21,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 2598 states have (on average 1.3156274056966897) internal successors, (3418), 2635 states have internal predecessors, (3418), 682 states have call successors, (682), 250 states have call predecessors, (682), 261 states have return successors, (720), 688 states have call predecessors, (720), 680 states have call successors, (720) [2022-11-20 12:37:21,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 4820 transitions. [2022-11-20 12:37:21,223 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 4820 transitions. Word has length 208 [2022-11-20 12:37:21,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:21,223 INFO L495 AbstractCegarLoop]: Abstraction has 3542 states and 4820 transitions. [2022-11-20 12:37:21,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-20 12:37:21,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 4820 transitions. [2022-11-20 12:37:21,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-20 12:37:21,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:21,230 INFO L195 NwaCegarLoop]: trace histogram [12, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:21,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:37:21,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:21,453 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:21,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:21,453 INFO L85 PathProgramCache]: Analyzing trace with hash 597662458, now seen corresponding path program 1 times [2022-11-20 12:37:21,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:37:21,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365163556] [2022-11-20 12:37:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:21,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:21,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:37:21,456 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:37:21,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 12:45:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:45:13,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:45:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:45:35,007 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-20 12:45:35,008 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:45:35,010 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 12:45:35,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:45:35,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:45:35,228 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 12:45:35,232 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:45:35,297 WARN L421 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2022-11-20 12:45:35,300 WARN L421 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2022-11-20 12:45:35,435 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Expected only CPrimitive but got *~wait_queue_t~0 at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:356) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateBitvecLiteral(CACSL2BoogieBacktranslator.java:1212) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateExpression(CACSL2BoogieBacktranslator.java:1021) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateProgramStateEntry(CACSL2BoogieBacktranslator.java:658) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateProgramState(CACSL2BoogieBacktranslator.java:633) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.handleCASTFunctionCallExpression(CACSL2BoogieBacktranslator.java:490) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateProgramExecution(CACSL2BoogieBacktranslator.java:267) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:217) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:582) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-11-20 12:45:35,438 INFO L158 Benchmark]: Toolchain (without parser) took 659798.15ms. Allocated memory was 69.2MB in the beginning and 771.8MB in the end (delta: 702.5MB). Free memory was 38.4MB in the beginning and 387.2MB in the end (delta: -348.8MB). Peak memory consumption was 354.8MB. Max. memory is 16.1GB. [2022-11-20 12:45:35,438 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 69.2MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:45:35,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2480.90ms. Allocated memory was 69.2MB in the beginning and 127.9MB in the end (delta: 58.7MB). Free memory was 38.2MB in the beginning and 50.9MB in the end (delta: -12.7MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. [2022-11-20 12:45:35,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 293.94ms. Allocated memory was 127.9MB in the beginning and 167.8MB in the end (delta: 39.8MB). Free memory was 50.9MB in the beginning and 101.5MB in the end (delta: -50.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-20 12:45:35,440 INFO L158 Benchmark]: Boogie Preprocessor took 262.54ms. Allocated memory is still 167.8MB. Free memory was 101.5MB in the beginning and 79.2MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 12:45:35,440 INFO L158 Benchmark]: RCFGBuilder took 28366.81ms. Allocated memory was 167.8MB in the beginning and 771.8MB in the end (delta: 604.0MB). Free memory was 79.2MB in the beginning and 644.0MB in the end (delta: -564.8MB). Peak memory consumption was 455.2MB. Max. memory is 16.1GB. [2022-11-20 12:45:35,443 INFO L158 Benchmark]: TraceAbstraction took 628384.10ms. Allocated memory is still 771.8MB. Free memory was 644.0MB in the beginning and 387.2MB in the end (delta: 256.8MB). Peak memory consumption was 256.8MB. Max. memory is 16.1GB. [2022-11-20 12:45:35,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 69.2MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2480.90ms. Allocated memory was 69.2MB in the beginning and 127.9MB in the end (delta: 58.7MB). Free memory was 38.2MB in the beginning and 50.9MB in the end (delta: -12.7MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 293.94ms. Allocated memory was 127.9MB in the beginning and 167.8MB in the end (delta: 39.8MB). Free memory was 50.9MB in the beginning and 101.5MB in the end (delta: -50.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 262.54ms. Allocated memory is still 167.8MB. Free memory was 101.5MB in the beginning and 79.2MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * RCFGBuilder took 28366.81ms. Allocated memory was 167.8MB in the beginning and 771.8MB in the end (delta: 604.0MB). Free memory was 79.2MB in the beginning and 644.0MB in the end (delta: -564.8MB). Peak memory consumption was 455.2MB. Max. memory is 16.1GB. * TraceAbstraction took 628384.10ms. Allocated memory is still 771.8MB. Free memory was 644.0MB in the beginning and 387.2MB in the end (delta: 256.8MB). Peak memory consumption was 256.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: AssertionError: Expected only CPrimitive but got *~wait_queue_t~0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Expected only CPrimitive but got *~wait_queue_t~0: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:356) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-20 12:45:35,689 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-20 12:45:35,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec61977-d7f8-4b10-9400-7fdd987f8350/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Expected only CPrimitive but got *~wait_queue_t~0