./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--block--loop.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_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf --- 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 11:15:42,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:15:42,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:15:42,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:15:42,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:15:42,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:15:42,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:15:42,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:15:42,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:15:43,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:15:43,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:15:43,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:15:43,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:15:43,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:15:43,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:15:43,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:15:43,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:15:43,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:15:43,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:15:43,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:15:43,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:15:43,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:15:43,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:15:43,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:15:43,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:15:43,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:15:43,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:15:43,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:15:43,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:15:43,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:15:43,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:15:43,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:15:43,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:15:43,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:15:43,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:15:43,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:15:43,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:15:43,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:15:43,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:15:43,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:15:43,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:15:43,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:15:43,063 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:15:43,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:15:43,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:15:43,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:15:43,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:15:43,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:15:43,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:15:43,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:15:43,066 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:15:43,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:15:43,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:15:43,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:15:43,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:15:43,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:15:43,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:15:43,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:15:43,068 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:15:43,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:15:43,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:15:43,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:15:43,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:15:43,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:15:43,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:15:43,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:15:43,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:15:43,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:15:43,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:15:43,070 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:15:43,071 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:15:43,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:15:43,071 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_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf [2022-11-20 11:15:43,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:15:43,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:15:43,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:15:43,349 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:15:43,349 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:15:43,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-20 11:15:46,393 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:15:47,074 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:15:47,075 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-20 11:15:47,129 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/data/5d7be5fc1/05a19c0ac12848489458040b20958baf/FLAG0e46d8ef2 [2022-11-20 11:15:47,152 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/data/5d7be5fc1/05a19c0ac12848489458040b20958baf [2022-11-20 11:15:47,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:15:47,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:15:47,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:15:47,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:15:47,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:15:47,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:47" (1/1) ... [2022-11-20 11:15:47,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff8ee63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:47, skipping insertion in model container [2022-11-20 11:15:47,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:47" (1/1) ... [2022-11-20 11:15:47,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:15:47,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:15:49,195 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.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:177) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:675) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1469) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) 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:1413) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) 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 11:15:49,206 INFO L158 Benchmark]: Toolchain (without parser) took 2044.50ms. Allocated memory is still 184.5MB. Free memory was 129.2MB in the beginning and 112.3MB in the end (delta: 16.9MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. [2022-11-20 11:15:49,206 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:15:49,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2040.21ms. Allocated memory is still 184.5MB. Free memory was 129.2MB in the beginning and 112.3MB in the end (delta: 16.9MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. [2022-11-20 11:15:49,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2040.21ms. Allocated memory is still 184.5MB. Free memory was 129.2MB in the beginning and 112.3MB in the end (delta: 16.9MB). Peak memory consumption was 59.8MB. 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_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf --- 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 11:15:51,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:15:51,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:15:51,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:15:51,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:15:51,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:15:51,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:15:51,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:15:51,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:15:51,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:15:51,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:15:51,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:15:51,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:15:51,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:15:51,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:15:51,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:15:51,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:15:51,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:15:51,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:15:51,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:15:51,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:15:51,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:15:51,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:15:51,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:15:51,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:15:51,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:15:51,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:15:51,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:15:51,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:15:51,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:15:51,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:15:51,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:15:51,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:15:51,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:15:51,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:15:51,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:15:51,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:15:51,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:15:51,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:15:51,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:15:51,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:15:51,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 11:15:51,525 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:15:51,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:15:51,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:15:51,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:15:51,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:15:51,528 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:15:51,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:15:51,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:15:51,529 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:15:51,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:15:51,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:15:51,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:15:51,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:15:51,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:15:51,530 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:15:51,531 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:15:51,531 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:15:51,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:15:51,531 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:15:51,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:15:51,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:15:51,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:15:51,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:15:51,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:15:51,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:15:51,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:15:51,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:15:51,533 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:15:51,533 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:15:51,533 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:15:51,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:15:51,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:15:51,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:15:51,534 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_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf [2022-11-20 11:15:51,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:15:51,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:15:51,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:15:51,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:15:51,939 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:15:51,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-20 11:15:55,132 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:15:55,656 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:15:55,656 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-20 11:15:55,689 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/data/c817401d9/15b0fd107a9245168e5588be7e32d252/FLAG807cc7098 [2022-11-20 11:15:55,705 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/data/c817401d9/15b0fd107a9245168e5588be7e32d252 [2022-11-20 11:15:55,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:15:55,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:15:55,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:15:55,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:15:55,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:15:55,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:55" (1/1) ... [2022-11-20 11:15:55,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa20542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:55, skipping insertion in model container [2022-11-20 11:15:55,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:55" (1/1) ... [2022-11-20 11:15:55,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:15:55,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:15:57,998 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_99e6e6ed-9131-4a8f-9d8a-4599e0731901/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i[237426,237439] [2022-11-20 11:15:58,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:15:58,133 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:15:58,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:15:58,539 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_99e6e6ed-9131-4a8f-9d8a-4599e0731901/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i[237426,237439] [2022-11-20 11:15:58,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:15:58,598 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:15:59,057 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_99e6e6ed-9131-4a8f-9d8a-4599e0731901/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i[237426,237439] [2022-11-20 11:15:59,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:15:59,238 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:15:59,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:59 WrapperNode [2022-11-20 11:15:59,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:15:59,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:15:59,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:15:59,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:15:59,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:59" (1/1) ... [2022-11-20 11:15:59,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:59" (1/1) ... [2022-11-20 11:15:59,601 INFO L138 Inliner]: procedures = 327, calls = 2049, calls flagged for inlining = 161, calls inlined = 159, statements flattened = 5430 [2022-11-20 11:15:59,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:15:59,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:15:59,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:15:59,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:15:59,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:59" (1/1) ... [2022-11-20 11:15:59,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:59" (1/1) ... [2022-11-20 11:15:59,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:59" (1/1) ... [2022-11-20 11:15:59,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:59" (1/1) ... [2022-11-20 11:15:59,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:59" (1/1) ... [2022-11-20 11:15:59,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:59" (1/1) ... [2022-11-20 11:15:59,881 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:59" (1/1) ... [2022-11-20 11:15:59,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:59" (1/1) ... [2022-11-20 11:15:59,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:15:59,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:15:59,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:15:59,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:15:59,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:59" (1/1) ... [2022-11-20 11:15:59,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:15:59,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:15:59,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:16:00,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:16:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 11:16:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2022-11-20 11:16:00,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2022-11-20 11:16:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 11:16:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure loop_add [2022-11-20 11:16:00,081 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_add [2022-11-20 11:16:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:16:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 11:16:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 11:16:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 11:16:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 11:16:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 11:16:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure iov_iter_bvec [2022-11-20 11:16:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_iter_bvec [2022-11-20 11:16:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 11:16:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 11:16:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2022-11-20 11:16:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2022-11-20 11:16:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure loop_control_ioctl [2022-11-20 11:16:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_control_ioctl [2022-11-20 11:16:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-20 11:16:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-20 11:16:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-20 11:16:00,084 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-20 11:16:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 11:16:00,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 11:16:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2022-11-20 11:16:00,084 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2022-11-20 11:16:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-20 11:16:00,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-20 11:16:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure loop_remove [2022-11-20 11:16:00,085 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_remove [2022-11-20 11:16:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_xor [2022-11-20 11:16:00,085 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_xor [2022-11-20 11:16:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 11:16:00,085 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 11:16:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 11:16:00,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 11:16:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure huge_encode_dev [2022-11-20 11:16:00,085 INFO L138 BoogieDeclarations]: Found implementation of procedure huge_encode_dev [2022-11-20 11:16:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure lo_do_transfer [2022-11-20 11:16:00,086 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_do_transfer [2022-11-20 11:16:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_unfreeze_queue [2022-11-20 11:16:00,086 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_unfreeze_queue [2022-11-20 11:16:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2022-11-20 11:16:00,086 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2022-11-20 11:16:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure lo_compat_ioctl [2022-11-20 11:16:00,086 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_compat_ioctl [2022-11-20 11:16:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-11-20 11:16:00,087 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-11-20 11:16:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-20 11:16:00,087 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-20 11:16:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 11:16:00,087 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 11:16:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:16:00,087 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:16:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-20 11:16:00,088 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-20 11:16:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure loop_get_status [2022-11-20 11:16:00,088 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_get_status [2022-11-20 11:16:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure loop_handle_cmd [2022-11-20 11:16:00,088 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_handle_cmd [2022-11-20 11:16:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure loop_clr_fd [2022-11-20 11:16:00,088 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_clr_fd [2022-11-20 11:16:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:16:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 11:16:00,089 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 11:16:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure figure_loop_size [2022-11-20 11:16:00,089 INFO L138 BoogieDeclarations]: Found implementation of procedure figure_loop_size [2022-11-20 11:16:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure get_size [2022-11-20 11:16:00,089 INFO L138 BoogieDeclarations]: Found implementation of procedure get_size [2022-11-20 11:16:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2022-11-20 11:16:00,089 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2022-11-20 11:16:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-20 11:16:00,089 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-20 11:16:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:16:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-20 11:16:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_2 [2022-11-20 11:16:00,090 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_2 [2022-11-20 11:16:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-20 11:16:00,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-20 11:16:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure lo_write_bvec [2022-11-20 11:16:00,090 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_write_bvec [2022-11-20 11:16:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 11:16:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 11:16:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 11:16:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:16:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:16:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:16:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 11:16:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:16:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-20 11:16:00,091 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-20 11:16:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 11:16:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 11:16:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-20 11:16:00,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-20 11:16:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-20 11:16:00,092 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-20 11:16:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status_old [2022-11-20 11:16:00,092 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status_old [2022-11-20 11:16:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-20 11:16:00,092 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-20 11:16:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-20 11:16:00,092 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-20 11:16:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-20 11:16:00,093 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-20 11:16:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure loop_reread_partitions [2022-11-20 11:16:00,093 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_reread_partitions [2022-11-20 11:16:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure nonseekable_open [2022-11-20 11:16:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_capacity [2022-11-20 11:16:00,093 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_capacity [2022-11-20 11:16:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure vfs_iter_read [2022-11-20 11:16:00,093 INFO L138 BoogieDeclarations]: Found implementation of procedure vfs_iter_read [2022-11-20 11:16:00,094 INFO L130 BoogieDeclarations]: Found specification of procedure idr_for_each [2022-11-20 11:16:00,094 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_for_each [2022-11-20 11:16:00,094 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2022-11-20 11:16:00,094 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2022-11-20 11:16:00,094 INFO L130 BoogieDeclarations]: Found specification of procedure ___might_sleep [2022-11-20 11:16:00,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ___might_sleep [2022-11-20 11:16:00,094 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2022-11-20 11:16:00,094 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2022-11-20 11:16:00,094 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-20 11:16:00,094 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-20 11:16:00,095 INFO L130 BoogieDeclarations]: Found specification of procedure bio_advance_iter [2022-11-20 11:16:00,095 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_advance_iter [2022-11-20 11:16:00,095 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_write_work [2022-11-20 11:16:00,095 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_write_work [2022-11-20 11:16:00,095 INFO L130 BoogieDeclarations]: Found specification of procedure bd_set_size [2022-11-20 11:16:00,095 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_set_size [2022-11-20 11:16:00,095 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2022-11-20 11:16:00,095 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2022-11-20 11:16:00,095 INFO L130 BoogieDeclarations]: Found specification of procedure mapping_set_gfp_mask [2022-11-20 11:16:00,095 INFO L138 BoogieDeclarations]: Found implementation of procedure mapping_set_gfp_mask [2022-11-20 11:16:00,095 INFO L130 BoogieDeclarations]: Found specification of procedure xor_init [2022-11-20 11:16:00,096 INFO L138 BoogieDeclarations]: Found implementation of procedure xor_init [2022-11-20 11:16:00,096 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status64 [2022-11-20 11:16:00,096 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status64 [2022-11-20 11:16:00,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 11:16:00,096 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 11:16:00,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_11 [2022-11-20 11:16:00,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_11 [2022-11-20 11:16:00,096 INFO L130 BoogieDeclarations]: Found specification of procedure zero_fill_bio [2022-11-20 11:16:00,096 INFO L138 BoogieDeclarations]: Found implementation of procedure zero_fill_bio [2022-11-20 11:16:00,096 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 11:16:00,096 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 11:16:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure loop_attr_show [2022-11-20 11:16:00,097 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_attr_show [2022-11-20 11:16:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-20 11:16:00,097 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-20 11:16:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 11:16:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 11:16:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 11:16:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 11:16:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 11:16:00,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 11:16:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-20 11:16:00,098 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-20 11:16:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-20 11:16:00,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-20 11:16:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_freeze_queue [2022-11-20 11:16:00,098 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_freeze_queue [2022-11-20 11:16:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 11:16:00,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 11:16:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:16:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 11:16:00,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 11:16:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-20 11:16:00,099 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-20 11:16:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:16:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure get_loop_size [2022-11-20 11:16:00,099 INFO L138 BoogieDeclarations]: Found implementation of procedure get_loop_size [2022-11-20 11:16:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:16:00,100 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-11-20 11:16:00,100 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-11-20 11:16:00,100 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status [2022-11-20 11:16:00,100 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status [2022-11-20 11:16:00,100 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 11:16:00,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 11:16:00,100 INFO L130 BoogieDeclarations]: Found specification of procedure lo_ioctl [2022-11-20 11:16:00,100 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_ioctl [2022-11-20 11:16:00,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 11:16:00,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 11:16:00,101 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-20 11:16:00,101 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-20 11:16:00,101 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-11-20 11:16:00,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-11-20 11:16:00,101 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2022-11-20 11:16:00,101 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2022-11-20 11:16:00,101 INFO L130 BoogieDeclarations]: Found specification of procedure loop_release_xfer [2022-11-20 11:16:00,101 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_release_xfer [2022-11-20 11:16:00,101 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2022-11-20 11:16:00,102 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2022-11-20 11:16:00,102 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-20 11:16:00,102 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-20 11:16:00,102 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_2 [2022-11-20 11:16:00,102 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_2 [2022-11-20 11:16:00,102 INFO L130 BoogieDeclarations]: Found specification of procedure loop_switch [2022-11-20 11:16:00,102 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_switch [2022-11-20 11:16:00,102 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_read_work [2022-11-20 11:16:00,102 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_read_work [2022-11-20 11:16:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2022-11-20 11:16:00,103 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2022-11-20 11:16:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-20 11:16:00,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-20 11:16:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure mapping_gfp_mask [2022-11-20 11:16:00,103 INFO L138 BoogieDeclarations]: Found implementation of procedure mapping_gfp_mask [2022-11-20 11:16:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-20 11:16:00,103 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-20 11:16:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2022-11-20 11:16:00,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2022-11-20 11:16:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 11:16:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-20 11:16:00,104 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-20 11:16:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:16:00,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:16:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure loop_lookup [2022-11-20 11:16:00,104 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_lookup [2022-11-20 11:16:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_rq [2022-11-20 11:16:00,104 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_rq [2022-11-20 11:16:01,017 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:16:01,020 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:16:07,379 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 11:17:11,127 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:17:11,161 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:17:11,161 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:17:11,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:17:11 BoogieIcfgContainer [2022-11-20 11:17:11,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:17:11,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:17:11,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:17:11,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:17:11,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:15:55" (1/3) ... [2022-11-20 11:17:11,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308892dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:17:11, skipping insertion in model container [2022-11-20 11:17:11,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:59" (2/3) ... [2022-11-20 11:17:11,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308892dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:17:11, skipping insertion in model container [2022-11-20 11:17:11,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:17:11" (3/3) ... [2022-11-20 11:17:11,182 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-20 11:17:11,203 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:17:11,203 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:17:11,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:17:11,318 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;@25f9f3bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:17:11,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:17:11,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 1642 states, 1188 states have (on average 1.3526936026936027) internal successors, (1607), 1223 states have internal predecessors, (1607), 360 states have call successors, (360), 93 states have call predecessors, (360), 92 states have return successors, (347), 345 states have call predecessors, (347), 347 states have call successors, (347) [2022-11-20 11:17:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2022-11-20 11:17:11,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:11,386 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:11,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:11,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1406266574, now seen corresponding path program 1 times [2022-11-20 11:17:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:17:11,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453921169] [2022-11-20 11:17:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:11,414 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 11:17:11,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:17:11,418 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:11,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:14,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 3232 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:17:14,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6141 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 6026 trivial. 0 not checked. [2022-11-20 11:17:14,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:17:14,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:17:14,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453921169] [2022-11-20 11:17:14,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453921169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:14,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:14,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:17:14,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930353954] [2022-11-20 11:17:14,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:14,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:17:14,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:17:14,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:17:14,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:17:14,297 INFO L87 Difference]: Start difference. First operand has 1642 states, 1188 states have (on average 1.3526936026936027) internal successors, (1607), 1223 states have internal predecessors, (1607), 360 states have call successors, (360), 93 states have call predecessors, (360), 92 states have return successors, (347), 345 states have call predecessors, (347), 347 states have call successors, (347) Second operand has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 11:17:14,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:14,492 INFO L93 Difference]: Finished difference Result 3279 states and 4718 transitions. [2022-11-20 11:17:14,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:17:14,495 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 675 [2022-11-20 11:17:14,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:14,522 INFO L225 Difference]: With dead ends: 3279 [2022-11-20 11:17:14,522 INFO L226 Difference]: Without dead ends: 1622 [2022-11-20 11:17:14,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:17:14,539 INFO L413 NwaCegarLoop]: 2309 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2309 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:14,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:17:14,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2022-11-20 11:17:14,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1622. [2022-11-20 11:17:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1183 states have (on average 1.3406593406593406) internal successors, (1586), 1203 states have internal predecessors, (1586), 347 states have call successors, (347), 92 states have call predecessors, (347), 91 states have return successors, (345), 343 states have call predecessors, (345), 345 states have call successors, (345) [2022-11-20 11:17:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2278 transitions. [2022-11-20 11:17:14,685 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2278 transitions. Word has length 675 [2022-11-20 11:17:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:14,685 INFO L495 AbstractCegarLoop]: Abstraction has 1622 states and 2278 transitions. [2022-11-20 11:17:14,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 11:17:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2278 transitions. [2022-11-20 11:17:14,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2022-11-20 11:17:14,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:14,710 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:14,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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)] Ended with exit code 0 [2022-11-20 11:17:14,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:14,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:14,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:14,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1676175006, now seen corresponding path program 1 times [2022-11-20 11:17:14,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:17:14,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728168071] [2022-11-20 11:17:14,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:14,928 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 11:17:14,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:17:14,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:14,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:17,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 3232 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:17:17,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6141 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 5943 trivial. 0 not checked. [2022-11-20 11:17:17,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:17:17,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:17:17,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728168071] [2022-11-20 11:17:17,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728168071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:17,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:17,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:17:17,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181731305] [2022-11-20 11:17:17,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:17,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:17:17,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:17:17,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:17:17,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:17:17,923 INFO L87 Difference]: Start difference. First operand 1622 states and 2278 transitions. Second operand has 6 states, 5 states have (on average 20.2) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-20 11:17:19,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:19,180 INFO L93 Difference]: Finished difference Result 3198 states and 4528 transitions. [2022-11-20 11:17:19,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:17:19,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 675 [2022-11-20 11:17:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:19,194 INFO L225 Difference]: With dead ends: 3198 [2022-11-20 11:17:19,194 INFO L226 Difference]: Without dead ends: 1623 [2022-11-20 11:17:19,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:17:19,202 INFO L413 NwaCegarLoop]: 2252 mSDtfsCounter, 6 mSDsluCounter, 8945 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11197 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:19,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11197 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 11:17:19,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-11-20 11:17:19,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1623. [2022-11-20 11:17:19,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1184 states have (on average 1.3403716216216217) internal successors, (1587), 1204 states have internal predecessors, (1587), 347 states have call successors, (347), 92 states have call predecessors, (347), 91 states have return successors, (345), 343 states have call predecessors, (345), 345 states have call successors, (345) [2022-11-20 11:17:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2279 transitions. [2022-11-20 11:17:19,284 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2279 transitions. Word has length 675 [2022-11-20 11:17:19,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:19,288 INFO L495 AbstractCegarLoop]: Abstraction has 1623 states and 2279 transitions. [2022-11-20 11:17:19,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-20 11:17:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2279 transitions. [2022-11-20 11:17:19,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2022-11-20 11:17:19,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:19,320 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:19,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:19,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:19,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash 920526509, now seen corresponding path program 1 times [2022-11-20 11:17:19,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:17:19,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583861315] [2022-11-20 11:17:19,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:19,528 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 11:17:19,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:17:19,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:19,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:22,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 3485 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:17:22,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6923 backedges. 264 proven. 1 refuted. 0 times theorem prover too weak. 6658 trivial. 0 not checked. [2022-11-20 11:17:22,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:17:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6923 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 6702 trivial. 0 not checked. [2022-11-20 11:17:23,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:17:23,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583861315] [2022-11-20 11:17:23,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583861315] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:17:23,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:17:23,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-20 11:17:23,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105689498] [2022-11-20 11:17:23,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:17:23,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:17:23,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:17:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:17:23,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:17:23,928 INFO L87 Difference]: Start difference. First operand 1623 states and 2279 transitions. Second operand has 11 states, 9 states have (on average 13.333333333333334) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (80), 2 states have call predecessors, (80), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2022-11-20 11:17:25,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:25,553 INFO L93 Difference]: Finished difference Result 3205 states and 4536 transitions. [2022-11-20 11:17:25,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:17:25,555 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 13.333333333333334) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (80), 2 states have call predecessors, (80), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 698 [2022-11-20 11:17:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:25,566 INFO L225 Difference]: With dead ends: 3205 [2022-11-20 11:17:25,566 INFO L226 Difference]: Without dead ends: 1629 [2022-11-20 11:17:25,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1397 GetRequests, 1385 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:17:25,574 INFO L413 NwaCegarLoop]: 2253 mSDtfsCounter, 8 mSDsluCounter, 11192 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 13445 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:25,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 13445 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 11:17:25,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-11-20 11:17:25,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2022-11-20 11:17:25,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1188 states have (on average 1.3392255892255893) internal successors, (1591), 1208 states have internal predecessors, (1591), 348 states have call successors, (348), 93 states have call predecessors, (348), 92 states have return successors, (346), 344 states have call predecessors, (346), 346 states have call successors, (346) [2022-11-20 11:17:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2285 transitions. [2022-11-20 11:17:25,633 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2285 transitions. Word has length 698 [2022-11-20 11:17:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:25,634 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 2285 transitions. [2022-11-20 11:17:25,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 13.333333333333334) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (80), 2 states have call predecessors, (80), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2022-11-20 11:17:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2285 transitions. [2022-11-20 11:17:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2022-11-20 11:17:25,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:25,644 INFO L195 NwaCegarLoop]: trace histogram [46, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:25,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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)] Ended with exit code 0 [2022-11-20 11:17:25,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:25,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:25,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:25,868 INFO L85 PathProgramCache]: Analyzing trace with hash 301787582, now seen corresponding path program 2 times [2022-11-20 11:17:25,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:17:25,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686048600] [2022-11-20 11:17:25,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:17:25,870 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 11:17:25,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:17:25,871 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:25,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:27,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:17:27,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:17:27,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:17:27,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8234 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8234 trivial. 0 not checked. [2022-11-20 11:17:27,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:17:27,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:17:27,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686048600] [2022-11-20 11:17:27,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686048600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:27,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:27,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:17:27,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415680658] [2022-11-20 11:17:27,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:27,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:17:27,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:17:27,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:17:27,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:17:27,713 INFO L87 Difference]: Start difference. First operand 1629 states and 2285 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-20 11:17:28,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:28,042 INFO L93 Difference]: Finished difference Result 4620 states and 6475 transitions. [2022-11-20 11:17:28,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:17:28,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 721 [2022-11-20 11:17:28,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:28,063 INFO L225 Difference]: With dead ends: 4620 [2022-11-20 11:17:28,063 INFO L226 Difference]: Without dead ends: 3100 [2022-11-20 11:17:28,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 719 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 11:17:28,072 INFO L413 NwaCegarLoop]: 2577 mSDtfsCounter, 2087 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 4800 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:28,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2087 Valid, 4800 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:17:28,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2022-11-20 11:17:28,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 3097. [2022-11-20 11:17:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3097 states, 2279 states have (on average 1.348398420359807) internal successors, (3073), 2318 states have internal predecessors, (3073), 635 states have call successors, (635), 183 states have call predecessors, (635), 182 states have return successors, (633), 629 states have call predecessors, (633), 633 states have call successors, (633) [2022-11-20 11:17:28,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 4341 transitions. [2022-11-20 11:17:28,206 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 4341 transitions. Word has length 721 [2022-11-20 11:17:28,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:28,207 INFO L495 AbstractCegarLoop]: Abstraction has 3097 states and 4341 transitions. [2022-11-20 11:17:28,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-20 11:17:28,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 4341 transitions. [2022-11-20 11:17:28,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2022-11-20 11:17:28,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:28,219 INFO L195 NwaCegarLoop]: trace histogram [46, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:28,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:17:28,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:28,441 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:28,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:28,442 INFO L85 PathProgramCache]: Analyzing trace with hash 579695011, now seen corresponding path program 1 times [2022-11-20 11:17:28,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:17:28,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485316357] [2022-11-20 11:17:28,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:28,444 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 11:17:28,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:17:28,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:28,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:31,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 3825 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:17:31,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8234 backedges. 374 proven. 3 refuted. 0 times theorem prover too weak. 7857 trivial. 0 not checked. [2022-11-20 11:17:31,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:17:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8234 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 7901 trivial. 0 not checked. [2022-11-20 11:17:33,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:17:33,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485316357] [2022-11-20 11:17:33,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485316357] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:17:33,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:17:33,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-20 11:17:33,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133221461] [2022-11-20 11:17:33,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:17:33,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:17:33,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:17:33,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:17:33,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:17:33,316 INFO L87 Difference]: Start difference. First operand 3097 states and 4341 transitions. Second operand has 13 states, 11 states have (on average 12.363636363636363) internal successors, (136), 13 states have internal predecessors, (136), 4 states have call successors, (84), 2 states have call predecessors, (84), 5 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) [2022-11-20 11:17:35,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:35,373 INFO L93 Difference]: Finished difference Result 6154 states and 8680 transitions. [2022-11-20 11:17:35,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:17:35,375 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 12.363636363636363) internal successors, (136), 13 states have internal predecessors, (136), 4 states have call successors, (84), 2 states have call predecessors, (84), 5 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) Word has length 735 [2022-11-20 11:17:35,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:35,394 INFO L225 Difference]: With dead ends: 6154 [2022-11-20 11:17:35,394 INFO L226 Difference]: Without dead ends: 3099 [2022-11-20 11:17:35,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1471 GetRequests, 1457 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:17:35,407 INFO L413 NwaCegarLoop]: 2253 mSDtfsCounter, 9 mSDsluCounter, 15682 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 17935 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:35,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 17935 Invalid, 391 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 11:17:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2022-11-20 11:17:35,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 3099. [2022-11-20 11:17:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2281 states have (on average 1.3480929416922403) internal successors, (3075), 2320 states have internal predecessors, (3075), 635 states have call successors, (635), 183 states have call predecessors, (635), 182 states have return successors, (633), 629 states have call predecessors, (633), 633 states have call successors, (633) [2022-11-20 11:17:35,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4343 transitions. [2022-11-20 11:17:35,530 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4343 transitions. Word has length 735 [2022-11-20 11:17:35,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:35,531 INFO L495 AbstractCegarLoop]: Abstraction has 3099 states and 4343 transitions. [2022-11-20 11:17:35,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 12.363636363636363) internal successors, (136), 13 states have internal predecessors, (136), 4 states have call successors, (84), 2 states have call predecessors, (84), 5 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) [2022-11-20 11:17:35,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4343 transitions. [2022-11-20 11:17:35,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2022-11-20 11:17:35,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:35,543 INFO L195 NwaCegarLoop]: trace histogram [69, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:35,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:35,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:35,764 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:35,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:35,764 INFO L85 PathProgramCache]: Analyzing trace with hash 768263986, now seen corresponding path program 2 times [2022-11-20 11:17:35,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:17:35,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636191528] [2022-11-20 11:17:35,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:17:35,767 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 11:17:35,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:17:35,768 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:35,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:37,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:17:37,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:17:37,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:17:37,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10074 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10074 trivial. 0 not checked. [2022-11-20 11:17:37,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:17:37,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:17:37,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636191528] [2022-11-20 11:17:37,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636191528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:37,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:37,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:17:37,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715298283] [2022-11-20 11:17:37,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:37,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:17:37,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:17:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:17:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:17:37,863 INFO L87 Difference]: Start difference. First operand 3099 states and 4343 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 11:17:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:38,299 INFO L93 Difference]: Finished difference Result 7767 states and 10837 transitions. [2022-11-20 11:17:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:17:38,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 758 [2022-11-20 11:17:38,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:38,330 INFO L225 Difference]: With dead ends: 7767 [2022-11-20 11:17:38,330 INFO L226 Difference]: Without dead ends: 4777 [2022-11-20 11:17:38,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 756 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 11:17:38,345 INFO L413 NwaCegarLoop]: 2443 mSDtfsCounter, 1320 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 4549 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:38,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 4549 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:17:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2022-11-20 11:17:38,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4761. [2022-11-20 11:17:38,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4761 states, 3530 states have (on average 1.3504249291784702) internal successors, (4767), 3582 states have internal predecessors, (4767), 934 states have call successors, (934), 297 states have call predecessors, (934), 296 states have return successors, (932), 925 states have call predecessors, (932), 932 states have call successors, (932) [2022-11-20 11:17:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4761 states to 4761 states and 6633 transitions. [2022-11-20 11:17:38,654 INFO L78 Accepts]: Start accepts. Automaton has 4761 states and 6633 transitions. Word has length 758 [2022-11-20 11:17:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:38,655 INFO L495 AbstractCegarLoop]: Abstraction has 4761 states and 6633 transitions. [2022-11-20 11:17:38,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 11:17:38,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4761 states and 6633 transitions. [2022-11-20 11:17:38,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2022-11-20 11:17:38,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:38,668 INFO L195 NwaCegarLoop]: trace histogram [69, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:38,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:38,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:38,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:38,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash -757268259, now seen corresponding path program 1 times [2022-11-20 11:17:38,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:17:38,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315825208] [2022-11-20 11:17:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:38,896 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 11:17:38,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:17:38,897 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:38,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:41,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 4063 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:17:41,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 10760 backedges. 1200 proven. 6 refuted. 0 times theorem prover too weak. 9554 trivial. 0 not checked. [2022-11-20 11:17:42,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:17:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10760 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 10270 trivial. 0 not checked. [2022-11-20 11:17:44,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:17:44,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315825208] [2022-11-20 11:17:44,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315825208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:17:44,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:17:44,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-20 11:17:44,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775417918] [2022-11-20 11:17:44,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:17:44,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:17:44,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:17:44,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:17:44,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:17:44,247 INFO L87 Difference]: Start difference. First operand 4761 states and 6633 transitions. Second operand has 15 states, 13 states have (on average 9.76923076923077) internal successors, (127), 15 states have internal predecessors, (127), 4 states have call successors, (82), 2 states have call predecessors, (82), 5 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) [2022-11-20 11:17:46,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:46,698 INFO L93 Difference]: Finished difference Result 9475 states and 13257 transitions. [2022-11-20 11:17:46,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:17:46,700 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 9.76923076923077) internal successors, (127), 15 states have internal predecessors, (127), 4 states have call successors, (82), 2 states have call predecessors, (82), 5 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) Word has length 768 [2022-11-20 11:17:46,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:46,736 INFO L225 Difference]: With dead ends: 9475 [2022-11-20 11:17:46,736 INFO L226 Difference]: Without dead ends: 4764 [2022-11-20 11:17:46,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1537 GetRequests, 1521 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:17:46,758 INFO L413 NwaCegarLoop]: 2253 mSDtfsCounter, 16 mSDsluCounter, 15668 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 17921 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:46,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 17921 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 11:17:46,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4764 states. [2022-11-20 11:17:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4764 to 4764. [2022-11-20 11:17:47,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4764 states, 3533 states have (on average 1.3501273705066517) internal successors, (4770), 3585 states have internal predecessors, (4770), 934 states have call successors, (934), 297 states have call predecessors, (934), 296 states have return successors, (932), 925 states have call predecessors, (932), 932 states have call successors, (932) [2022-11-20 11:17:47,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4764 states to 4764 states and 6636 transitions. [2022-11-20 11:17:47,027 INFO L78 Accepts]: Start accepts. Automaton has 4764 states and 6636 transitions. Word has length 768 [2022-11-20 11:17:47,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:47,028 INFO L495 AbstractCegarLoop]: Abstraction has 4764 states and 6636 transitions. [2022-11-20 11:17:47,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 9.76923076923077) internal successors, (127), 15 states have internal predecessors, (127), 4 states have call successors, (82), 2 states have call predecessors, (82), 5 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) [2022-11-20 11:17:47,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4764 states and 6636 transitions. [2022-11-20 11:17:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2022-11-20 11:17:47,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:47,038 INFO L195 NwaCegarLoop]: trace histogram [92, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:47,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:47,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:47,264 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:47,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2065482450, now seen corresponding path program 2 times [2022-11-20 11:17:47,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:17:47,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444192161] [2022-11-20 11:17:47,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:17:47,267 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 11:17:47,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:17:47,269 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:47,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:48,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:17:48,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:17:49,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:17:49,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 13129 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13129 trivial. 0 not checked. [2022-11-20 11:17:54,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:17:54,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:17:54,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444192161] [2022-11-20 11:17:54,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444192161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:54,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:54,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:17:54,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80672740] [2022-11-20 11:17:54,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:54,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:17:54,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:17:54,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:17:54,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:17:54,245 INFO L87 Difference]: Start difference. First operand 4764 states and 6636 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2022-11-20 11:17:54,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:54,661 INFO L93 Difference]: Finished difference Result 14035 states and 19621 transitions. [2022-11-20 11:17:54,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:17:54,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 791 [2022-11-20 11:17:54,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:54,722 INFO L225 Difference]: With dead ends: 14035 [2022-11-20 11:17:54,722 INFO L226 Difference]: Without dead ends: 9383 [2022-11-20 11:17:54,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 789 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 11:17:54,747 INFO L413 NwaCegarLoop]: 2816 mSDtfsCounter, 2076 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 4949 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:54,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2076 Valid, 4949 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:17:54,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9383 states. [2022-11-20 11:17:55,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9383 to 9379. [2022-11-20 11:17:55,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9379 states, 6980 states have (on average 1.3534383954154727) internal successors, (9447), 7082 states have internal predecessors, (9447), 1812 states have call successors, (1812), 587 states have call predecessors, (1812), 586 states have return successors, (1834), 1797 states have call predecessors, (1834), 1810 states have call successors, (1834) [2022-11-20 11:17:55,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9379 states to 9379 states and 13093 transitions. [2022-11-20 11:17:55,309 INFO L78 Accepts]: Start accepts. Automaton has 9379 states and 13093 transitions. Word has length 791 [2022-11-20 11:17:55,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:55,310 INFO L495 AbstractCegarLoop]: Abstraction has 9379 states and 13093 transitions. [2022-11-20 11:17:55,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2022-11-20 11:17:55,311 INFO L276 IsEmpty]: Start isEmpty. Operand 9379 states and 13093 transitions. [2022-11-20 11:17:55,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2022-11-20 11:17:55,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:55,329 INFO L195 NwaCegarLoop]: trace histogram [92, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:55,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:55,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:55,552 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:55,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:55,553 INFO L85 PathProgramCache]: Analyzing trace with hash -432070205, now seen corresponding path program 1 times [2022-11-20 11:17:55,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:17:55,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316962919] [2022-11-20 11:17:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:55,555 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 11:17:55,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:17:55,556 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:55,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:17:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:59,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 4583 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:17:59,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 13882 backedges. 2070 proven. 10 refuted. 0 times theorem prover too weak. 11802 trivial. 0 not checked. [2022-11-20 11:17:59,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:18:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 13882 backedges. 0 proven. 692 refuted. 0 times theorem prover too weak. 13190 trivial. 0 not checked. [2022-11-20 11:18:02,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:18:02,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316962919] [2022-11-20 11:18:02,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316962919] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:18:02,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:18:02,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-20 11:18:02,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230052306] [2022-11-20 11:18:02,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:18:02,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:18:02,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:18:02,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:18:02,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:18:02,081 INFO L87 Difference]: Start difference. First operand 9379 states and 13093 transitions. Second operand has 17 states, 15 states have (on average 11.133333333333333) internal successors, (167), 17 states have internal predecessors, (167), 4 states have call successors, (94), 2 states have call predecessors, (94), 5 states have return successors, (92), 4 states have call predecessors, (92), 4 states have call successors, (92) [2022-11-20 11:18:05,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:05,676 INFO L93 Difference]: Finished difference Result 18720 states and 26242 transitions. [2022-11-20 11:18:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:18:05,678 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 11.133333333333333) internal successors, (167), 17 states have internal predecessors, (167), 4 states have call successors, (94), 2 states have call predecessors, (94), 5 states have return successors, (92), 4 states have call predecessors, (92), 4 states have call successors, (92) Word has length 869 [2022-11-20 11:18:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:05,739 INFO L225 Difference]: With dead ends: 18720 [2022-11-20 11:18:05,739 INFO L226 Difference]: Without dead ends: 9392 [2022-11-20 11:18:05,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1742 GetRequests, 1721 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:18:05,780 INFO L413 NwaCegarLoop]: 2254 mSDtfsCounter, 16 mSDsluCounter, 24668 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 26922 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:05,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 26922 Invalid, 569 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 11:18:05,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9392 states. [2022-11-20 11:18:06,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9392 to 9392. [2022-11-20 11:18:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9392 states, 6992 states have (on average 1.352974828375286) internal successors, (9460), 7094 states have internal predecessors, (9460), 1812 states have call successors, (1812), 588 states have call predecessors, (1812), 587 states have return successors, (1834), 1797 states have call predecessors, (1834), 1810 states have call successors, (1834) [2022-11-20 11:18:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9392 states to 9392 states and 13106 transitions. [2022-11-20 11:18:06,355 INFO L78 Accepts]: Start accepts. Automaton has 9392 states and 13106 transitions. Word has length 869 [2022-11-20 11:18:06,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:06,356 INFO L495 AbstractCegarLoop]: Abstraction has 9392 states and 13106 transitions. [2022-11-20 11:18:06,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 11.133333333333333) internal successors, (167), 17 states have internal predecessors, (167), 4 states have call successors, (94), 2 states have call predecessors, (94), 5 states have return successors, (92), 4 states have call predecessors, (92), 4 states have call successors, (92) [2022-11-20 11:18:06,357 INFO L276 IsEmpty]: Start isEmpty. Operand 9392 states and 13106 transitions. [2022-11-20 11:18:06,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2022-11-20 11:18:06,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:06,380 INFO L195 NwaCegarLoop]: trace histogram [98, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:06,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:06,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:06,604 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:18:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:06,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1658470575, now seen corresponding path program 2 times [2022-11-20 11:18:06,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:18:06,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311993688] [2022-11-20 11:18:06,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:18:06,608 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 11:18:06,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:18:06,609 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:06,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:08,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:18:08,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:18:09,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:18:09,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 14587 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14587 trivial. 0 not checked. [2022-11-20 11:18:09,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:18:09,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:18:09,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311993688] [2022-11-20 11:18:09,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311993688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:09,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:09,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:18:09,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952668777] [2022-11-20 11:18:09,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:09,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:18:09,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:18:09,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:18:09,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:18:09,605 INFO L87 Difference]: Start difference. First operand 9392 states and 13106 transitions. Second operand has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 4 states have call successors, (60), 4 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-20 11:18:17,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:17,578 INFO L93 Difference]: Finished difference Result 23242 states and 32502 transitions. [2022-11-20 11:18:17,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:18:17,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 4 states have call successors, (60), 4 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 875 [2022-11-20 11:18:17,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:17,693 INFO L225 Difference]: With dead ends: 23242 [2022-11-20 11:18:17,693 INFO L226 Difference]: Without dead ends: 18602 [2022-11-20 11:18:17,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 869 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:18:17,722 INFO L413 NwaCegarLoop]: 4384 mSDtfsCounter, 2186 mSDsluCounter, 19020 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2202 SdHoareTripleChecker+Valid, 23404 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:17,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2202 Valid, 23404 Invalid, 784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-20 11:18:17,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18602 states. [2022-11-20 11:18:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18602 to 18548. [2022-11-20 11:18:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18548 states, 13820 states have (on average 1.3542691751085383) internal successors, (18716), 14024 states have internal predecessors, (18716), 3552 states have call successors, (3552), 1172 states have call predecessors, (3552), 1175 states have return successors, (3630), 3523 states have call predecessors, (3630), 3550 states have call successors, (3630) [2022-11-20 11:18:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18548 states to 18548 states and 25898 transitions. [2022-11-20 11:18:19,199 INFO L78 Accepts]: Start accepts. Automaton has 18548 states and 25898 transitions. Word has length 875 [2022-11-20 11:18:19,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:19,201 INFO L495 AbstractCegarLoop]: Abstraction has 18548 states and 25898 transitions. [2022-11-20 11:18:19,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 4 states have call successors, (60), 4 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-20 11:18:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 18548 states and 25898 transitions. [2022-11-20 11:18:19,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2022-11-20 11:18:19,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:19,223 INFO L195 NwaCegarLoop]: trace histogram [98, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:19,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:19,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:19,448 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:18:19,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:19,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1379757178, now seen corresponding path program 1 times [2022-11-20 11:18:19,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:18:19,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869258669] [2022-11-20 11:18:19,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:19,452 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 11:18:19,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:18:19,454 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:19,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:24,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 4651 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:18:24,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14587 backedges. 2210 proven. 15 refuted. 0 times theorem prover too weak. 12362 trivial. 0 not checked. [2022-11-20 11:18:24,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:18:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14587 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 13750 trivial. 0 not checked. [2022-11-20 11:18:27,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:18:27,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869258669] [2022-11-20 11:18:27,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869258669] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:18:27,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:18:27,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-20 11:18:27,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115571575] [2022-11-20 11:18:27,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:18:27,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:18:27,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:18:27,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:18:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:18:27,572 INFO L87 Difference]: Start difference. First operand 18548 states and 25898 transitions. Second operand has 19 states, 17 states have (on average 10.0) internal successors, (170), 19 states have internal predecessors, (170), 4 states have call successors, (94), 2 states have call predecessors, (94), 5 states have return successors, (92), 4 states have call predecessors, (92), 4 states have call successors, (92) [2022-11-20 11:18:31,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:31,959 INFO L93 Difference]: Finished difference Result 37064 states and 51933 transitions. [2022-11-20 11:18:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:18:31,960 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 10.0) internal successors, (170), 19 states have internal predecessors, (170), 4 states have call successors, (94), 2 states have call predecessors, (94), 5 states have return successors, (92), 4 states have call predecessors, (92), 4 states have call successors, (92) Word has length 876 [2022-11-20 11:18:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:32,086 INFO L225 Difference]: With dead ends: 37064 [2022-11-20 11:18:32,086 INFO L226 Difference]: Without dead ends: 18557 [2022-11-20 11:18:32,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1757 GetRequests, 1733 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:18:32,180 INFO L413 NwaCegarLoop]: 2255 mSDtfsCounter, 32 mSDsluCounter, 22432 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 24687 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:32,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 24687 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 11:18:32,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18557 states. [2022-11-20 11:18:33,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18557 to 18557. [2022-11-20 11:18:33,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18557 states, 13829 states have (on average 1.3540386145057488) internal successors, (18725), 14033 states have internal predecessors, (18725), 3552 states have call successors, (3552), 1172 states have call predecessors, (3552), 1175 states have return successors, (3630), 3523 states have call predecessors, (3630), 3550 states have call successors, (3630) [2022-11-20 11:18:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18557 states to 18557 states and 25907 transitions. [2022-11-20 11:18:33,334 INFO L78 Accepts]: Start accepts. Automaton has 18557 states and 25907 transitions. Word has length 876 [2022-11-20 11:18:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:33,335 INFO L495 AbstractCegarLoop]: Abstraction has 18557 states and 25907 transitions. [2022-11-20 11:18:33,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 10.0) internal successors, (170), 19 states have internal predecessors, (170), 4 states have call successors, (94), 2 states have call predecessors, (94), 5 states have return successors, (92), 4 states have call predecessors, (92), 4 states have call successors, (92) [2022-11-20 11:18:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 18557 states and 25907 transitions. [2022-11-20 11:18:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2022-11-20 11:18:33,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:33,358 INFO L195 NwaCegarLoop]: trace histogram [104, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:33,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:33,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:33,584 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:18:33,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:33,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1896345294, now seen corresponding path program 2 times [2022-11-20 11:18:33,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:18:33,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932909765] [2022-11-20 11:18:33,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:18:33,588 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 11:18:33,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:18:33,590 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:33,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:36,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:18:36,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:18:36,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:18:36,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 15328 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15328 trivial. 0 not checked. [2022-11-20 11:18:42,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:18:42,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:18:42,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932909765] [2022-11-20 11:18:42,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932909765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:42,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:42,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:18:42,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761203228] [2022-11-20 11:18:42,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:42,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:18:42,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:18:42,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:18:42,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:42,387 INFO L87 Difference]: Start difference. First operand 18557 states and 25907 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (60), 3 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-20 11:18:52,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:52,273 INFO L93 Difference]: Finished difference Result 46284 states and 64921 transitions. [2022-11-20 11:18:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:18:52,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (60), 3 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 882 [2022-11-20 11:18:52,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:52,476 INFO L225 Difference]: With dead ends: 46284 [2022-11-20 11:18:52,476 INFO L226 Difference]: Without dead ends: 36986 [2022-11-20 11:18:52,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 879 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:52,537 INFO L413 NwaCegarLoop]: 4732 mSDtfsCounter, 4188 mSDsluCounter, 3818 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4188 SdHoareTripleChecker+Valid, 8550 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:52,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4188 Valid, 8550 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-20 11:18:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36986 states. [2022-11-20 11:18:54,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36986 to 36963. [2022-11-20 11:18:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36963 states, 27569 states have (on average 1.3549639087380754) internal successors, (37355), 27975 states have internal predecessors, (37355), 7050 states have call successors, (7050), 2336 states have call predecessors, (7050), 2343 states have return successors, (7382), 6995 states have call predecessors, (7382), 7048 states have call successors, (7382) [2022-11-20 11:18:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36963 states to 36963 states and 51787 transitions. [2022-11-20 11:18:54,889 INFO L78 Accepts]: Start accepts. Automaton has 36963 states and 51787 transitions. Word has length 882 [2022-11-20 11:18:54,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:54,890 INFO L495 AbstractCegarLoop]: Abstraction has 36963 states and 51787 transitions. [2022-11-20 11:18:54,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (60), 3 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-20 11:18:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand 36963 states and 51787 transitions. [2022-11-20 11:18:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2022-11-20 11:18:55,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:55,072 INFO L195 NwaCegarLoop]: trace histogram [104, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:55,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:55,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:55,288 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:18:55,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:55,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1588679749, now seen corresponding path program 1 times [2022-11-20 11:18:55,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:18:55,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213774785] [2022-11-20 11:18:55,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:55,295 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 11:18:55,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:18:55,296 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:55,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:18:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 4773 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:18:59,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:19:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 15328 backedges. 2360 proven. 21 refuted. 0 times theorem prover too weak. 12947 trivial. 0 not checked. [2022-11-20 11:19:00,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:19:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 15328 backedges. 0 proven. 993 refuted. 0 times theorem prover too weak. 14335 trivial. 0 not checked. [2022-11-20 11:19:04,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:19:04,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213774785] [2022-11-20 11:19:04,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213774785] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:19:04,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:19:04,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-11-20 11:19:04,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71864841] [2022-11-20 11:19:04,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:19:04,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:19:04,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:19:04,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:19:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:19:04,075 INFO L87 Difference]: Start difference. First operand 36963 states and 51787 transitions. Second operand has 21 states, 19 states have (on average 9.842105263157896) internal successors, (187), 21 states have internal predecessors, (187), 4 states have call successors, (99), 2 states have call predecessors, (99), 5 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) [2022-11-20 11:19:10,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:10,139 INFO L93 Difference]: Finished difference Result 73918 states and 104015 transitions. [2022-11-20 11:19:10,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:19:10,141 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 9.842105263157896) internal successors, (187), 21 states have internal predecessors, (187), 4 states have call successors, (99), 2 states have call predecessors, (99), 5 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) Word has length 898 [2022-11-20 11:19:10,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:10,369 INFO L225 Difference]: With dead ends: 73918 [2022-11-20 11:19:10,369 INFO L226 Difference]: Without dead ends: 36980 [2022-11-20 11:19:10,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1801 GetRequests, 1775 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:19:10,536 INFO L413 NwaCegarLoop]: 2255 mSDtfsCounter, 30 mSDsluCounter, 33652 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 35907 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:10,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 35907 Invalid, 761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 11:19:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36980 states. [2022-11-20 11:19:12,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36980 to 36980. [2022-11-20 11:19:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36980 states, 27586 states have (on average 1.3547451605887044) internal successors, (37372), 27992 states have internal predecessors, (37372), 7050 states have call successors, (7050), 2336 states have call predecessors, (7050), 2343 states have return successors, (7382), 6995 states have call predecessors, (7382), 7048 states have call successors, (7382) [2022-11-20 11:19:13,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36980 states to 36980 states and 51804 transitions. [2022-11-20 11:19:13,073 INFO L78 Accepts]: Start accepts. Automaton has 36980 states and 51804 transitions. Word has length 898 [2022-11-20 11:19:13,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:13,074 INFO L495 AbstractCegarLoop]: Abstraction has 36980 states and 51804 transitions. [2022-11-20 11:19:13,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 9.842105263157896) internal successors, (187), 21 states have internal predecessors, (187), 4 states have call successors, (99), 2 states have call predecessors, (99), 5 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) [2022-11-20 11:19:13,074 INFO L276 IsEmpty]: Start isEmpty. Operand 36980 states and 51804 transitions. [2022-11-20 11:19:13,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2022-11-20 11:19:13,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:13,098 INFO L195 NwaCegarLoop]: trace histogram [110, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:13,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:19:13,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:19:13,324 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:13,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:13,324 INFO L85 PathProgramCache]: Analyzing trace with hash -37984295, now seen corresponding path program 2 times [2022-11-20 11:19:13,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:19:13,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072361248] [2022-11-20 11:19:13,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:19:13,328 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 11:19:13,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:19:13,329 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:19:13,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:19:15,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:19:15,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:19:15,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:19:15,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:19:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 16105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16105 trivial. 0 not checked. [2022-11-20 11:19:15,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:19:15,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:19:15,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072361248] [2022-11-20 11:19:15,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072361248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:15,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:15,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:19:15,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799349474] [2022-11-20 11:19:15,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:15,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:19:15,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:19:15,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:19:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:19:15,980 INFO L87 Difference]: Start difference. First operand 36980 states and 51804 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-20 11:19:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:17,928 INFO L93 Difference]: Finished difference Result 73838 states and 103439 transitions. [2022-11-20 11:19:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:19:17,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 904 [2022-11-20 11:19:17,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:18,168 INFO L225 Difference]: With dead ends: 73838 [2022-11-20 11:19:18,168 INFO L226 Difference]: Without dead ends: 36996 [2022-11-20 11:19:18,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 902 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 11:19:18,339 INFO L413 NwaCegarLoop]: 2273 mSDtfsCounter, 0 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:18,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4539 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:19:18,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36996 states. [2022-11-20 11:19:20,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36996 to 36980. [2022-11-20 11:19:20,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36980 states, 27586 states have (on average 1.3530051475386065) internal successors, (37324), 27992 states have internal predecessors, (37324), 7050 states have call successors, (7050), 2336 states have call predecessors, (7050), 2343 states have return successors, (7382), 6995 states have call predecessors, (7382), 7048 states have call successors, (7382) [2022-11-20 11:19:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36980 states to 36980 states and 51756 transitions. [2022-11-20 11:19:20,574 INFO L78 Accepts]: Start accepts. Automaton has 36980 states and 51756 transitions. Word has length 904 [2022-11-20 11:19:20,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:20,576 INFO L495 AbstractCegarLoop]: Abstraction has 36980 states and 51756 transitions. [2022-11-20 11:19:20,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-20 11:19:20,576 INFO L276 IsEmpty]: Start isEmpty. Operand 36980 states and 51756 transitions. [2022-11-20 11:19:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2022-11-20 11:19:20,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:20,605 INFO L195 NwaCegarLoop]: trace histogram [110, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:20,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:19:20,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:19:20,820 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:20,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:20,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1641489908, now seen corresponding path program 1 times [2022-11-20 11:19:20,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:19:20,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118141608] [2022-11-20 11:19:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:20,823 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 11:19:20,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:19:20,824 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:19:20,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:19:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:25,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 4843 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:19:25,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:19:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16105 backedges. 2520 proven. 28 refuted. 0 times theorem prover too weak. 13557 trivial. 0 not checked. [2022-11-20 11:19:26,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:19:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16105 backedges. 0 proven. 1160 refuted. 0 times theorem prover too weak. 14945 trivial. 0 not checked. [2022-11-20 11:19:30,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:19:30,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118141608] [2022-11-20 11:19:30,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118141608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:19:30,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:19:30,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-11-20 11:19:30,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700585132] [2022-11-20 11:19:30,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:19:30,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:19:30,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:19:30,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:19:30,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:19:30,121 INFO L87 Difference]: Start difference. First operand 36980 states and 51756 transitions. Second operand has 23 states, 21 states have (on average 9.095238095238095) internal successors, (191), 23 states have internal predecessors, (191), 4 states have call successors, (99), 2 states have call predecessors, (99), 5 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) [2022-11-20 11:19:36,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:36,711 INFO L93 Difference]: Finished difference Result 73952 states and 103953 transitions. [2022-11-20 11:19:36,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:19:36,713 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 9.095238095238095) internal successors, (191), 23 states have internal predecessors, (191), 4 states have call successors, (99), 2 states have call predecessors, (99), 5 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) Word has length 906 [2022-11-20 11:19:36,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:36,921 INFO L225 Difference]: With dead ends: 73952 [2022-11-20 11:19:36,922 INFO L226 Difference]: Without dead ends: 36997 [2022-11-20 11:19:37,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1817 GetRequests, 1789 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:19:37,077 INFO L413 NwaCegarLoop]: 2252 mSDtfsCounter, 30 mSDsluCounter, 31332 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 33584 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:37,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 33584 Invalid, 796 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-20 11:19:37,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36997 states. [2022-11-20 11:19:39,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36997 to 36997. [2022-11-20 11:19:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36997 states, 27603 states have (on average 1.352787740462993) internal successors, (37341), 28009 states have internal predecessors, (37341), 7050 states have call successors, (7050), 2336 states have call predecessors, (7050), 2343 states have return successors, (7382), 6995 states have call predecessors, (7382), 7048 states have call successors, (7382) [2022-11-20 11:19:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36997 states to 36997 states and 51773 transitions. [2022-11-20 11:19:39,334 INFO L78 Accepts]: Start accepts. Automaton has 36997 states and 51773 transitions. Word has length 906 [2022-11-20 11:19:39,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:39,335 INFO L495 AbstractCegarLoop]: Abstraction has 36997 states and 51773 transitions. [2022-11-20 11:19:39,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 9.095238095238095) internal successors, (191), 23 states have internal predecessors, (191), 4 states have call successors, (99), 2 states have call predecessors, (99), 5 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) [2022-11-20 11:19:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 36997 states and 51773 transitions. [2022-11-20 11:19:39,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2022-11-20 11:19:39,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:39,360 INFO L195 NwaCegarLoop]: trace histogram [116, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:39,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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)] Ended with exit code 0 [2022-11-20 11:19:39,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:19:39,576 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:39,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:39,576 INFO L85 PathProgramCache]: Analyzing trace with hash -16723192, now seen corresponding path program 1 times [2022-11-20 11:19:39,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:19:39,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864140451] [2022-11-20 11:19:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:39,579 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 11:19:39,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:19:39,581 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:19:39,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:19:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:56,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 4933 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:19:56,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:19:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 16918 backedges. 739 proven. 0 refuted. 0 times theorem prover too weak. 16179 trivial. 0 not checked. [2022-11-20 11:19:56,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:19:56,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:19:56,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864140451] [2022-11-20 11:19:56,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864140451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:56,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:56,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:19:56,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138946646] [2022-11-20 11:19:56,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:56,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:19:56,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:19:56,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:19:56,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:19:56,136 INFO L87 Difference]: Start difference. First operand 36997 states and 51773 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-20 11:19:57,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:57,709 INFO L93 Difference]: Finished difference Result 73892 states and 103404 transitions. [2022-11-20 11:19:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:19:57,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 910 [2022-11-20 11:19:57,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:57,973 INFO L225 Difference]: With dead ends: 73892 [2022-11-20 11:19:57,973 INFO L226 Difference]: Without dead ends: 37018 [2022-11-20 11:19:58,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 907 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:19:58,069 INFO L413 NwaCegarLoop]: 2277 mSDtfsCounter, 8 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6818 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:58,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6818 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:19:58,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37018 states. [2022-11-20 11:19:59,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37018 to 36999. [2022-11-20 11:19:59,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36999 states, 27605 states have (on average 1.3524723781923564) internal successors, (37335), 28011 states have internal predecessors, (37335), 7050 states have call successors, (7050), 2336 states have call predecessors, (7050), 2343 states have return successors, (7382), 6995 states have call predecessors, (7382), 7048 states have call successors, (7382) [2022-11-20 11:19:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36999 states to 36999 states and 51767 transitions. [2022-11-20 11:19:59,978 INFO L78 Accepts]: Start accepts. Automaton has 36999 states and 51767 transitions. Word has length 910 [2022-11-20 11:19:59,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:59,979 INFO L495 AbstractCegarLoop]: Abstraction has 36999 states and 51767 transitions. [2022-11-20 11:19:59,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-20 11:19:59,980 INFO L276 IsEmpty]: Start isEmpty. Operand 36999 states and 51767 transitions. [2022-11-20 11:20:00,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2022-11-20 11:20:00,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:20:00,003 INFO L195 NwaCegarLoop]: trace histogram [116, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:00,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:20:00,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:20:00,216 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:20:00,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:00,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1635154363, now seen corresponding path program 1 times [2022-11-20 11:20:00,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:20:00,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961635908] [2022-11-20 11:20:00,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:00,220 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 11:20:00,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:20:00,221 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:20:00,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:20:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:16,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 4954 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:20:16,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 16918 backedges. 739 proven. 0 refuted. 0 times theorem prover too weak. 16179 trivial. 0 not checked. [2022-11-20 11:20:16,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:20:16,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:20:16,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961635908] [2022-11-20 11:20:16,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961635908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:16,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:16,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:20:16,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492657171] [2022-11-20 11:20:16,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:16,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:20:16,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:20:16,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:20:16,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:20:16,540 INFO L87 Difference]: Start difference. First operand 36999 states and 51767 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-20 11:20:20,255 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 11:20:21,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:20:21,914 INFO L93 Difference]: Finished difference Result 110655 states and 155541 transitions. [2022-11-20 11:20:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:20:21,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 919 [2022-11-20 11:20:21,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:20:22,218 INFO L225 Difference]: With dead ends: 110655 [2022-11-20 11:20:22,218 INFO L226 Difference]: Without dead ends: 73795 [2022-11-20 11:20:22,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 917 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 11:20:22,345 INFO L413 NwaCegarLoop]: 3344 mSDtfsCounter, 2270 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2273 SdHoareTripleChecker+Valid, 5450 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:20:22,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2273 Valid, 5450 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 11:20:22,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73795 states. [2022-11-20 11:20:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73795 to 73551. [2022-11-20 11:20:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73551 states, 54825 states have (on average 1.3530870953032377) internal successors, (74183), 55653 states have internal predecessors, (74183), 14046 states have call successors, (14046), 4664 states have call predecessors, (14046), 4679 states have return successors, (15026), 13921 states have call predecessors, (15026), 14044 states have call successors, (15026) [2022-11-20 11:20:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73551 states to 73551 states and 103255 transitions. [2022-11-20 11:20:26,149 INFO L78 Accepts]: Start accepts. Automaton has 73551 states and 103255 transitions. Word has length 919 [2022-11-20 11:20:26,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:20:26,150 INFO L495 AbstractCegarLoop]: Abstraction has 73551 states and 103255 transitions. [2022-11-20 11:20:26,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-20 11:20:26,150 INFO L276 IsEmpty]: Start isEmpty. Operand 73551 states and 103255 transitions. [2022-11-20 11:20:26,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2022-11-20 11:20:26,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:20:26,173 INFO L195 NwaCegarLoop]: trace histogram [116, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:26,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:20:26,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:20:26,388 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:20:26,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:26,388 INFO L85 PathProgramCache]: Analyzing trace with hash -782995801, now seen corresponding path program 1 times [2022-11-20 11:20:26,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:20:26,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150441000] [2022-11-20 11:20:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:26,390 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 11:20:26,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:20:26,392 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:20:26,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:20:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:42,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 4960 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:20:42,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16918 backedges. 739 proven. 0 refuted. 0 times theorem prover too weak. 16179 trivial. 0 not checked. [2022-11-20 11:20:48,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:20:48,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:20:48,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150441000] [2022-11-20 11:20:48,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150441000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:48,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:48,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:20:48,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680411505] [2022-11-20 11:20:48,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:48,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:20:48,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:20:48,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:20:48,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:20:48,100 INFO L87 Difference]: Start difference. First operand 73551 states and 103255 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-20 11:20:50,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:20:50,909 INFO L93 Difference]: Finished difference Result 110459 states and 154856 transitions. [2022-11-20 11:20:50,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:20:50,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 921 [2022-11-20 11:20:50,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:20:51,068 INFO L225 Difference]: With dead ends: 110459 [2022-11-20 11:20:51,069 INFO L226 Difference]: Without dead ends: 37047 [2022-11-20 11:20:51,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 919 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 11:20:51,258 INFO L413 NwaCegarLoop]: 2268 mSDtfsCounter, 2076 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:20:51,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2076 Valid, 2268 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:20:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37047 states. [2022-11-20 11:20:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37047 to 36983. [2022-11-20 11:20:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36983 states, 27589 states have (on average 1.3493421291094276) internal successors, (37227), 27995 states have internal predecessors, (37227), 7050 states have call successors, (7050), 2336 states have call predecessors, (7050), 2343 states have return successors, (7382), 6995 states have call predecessors, (7382), 7048 states have call successors, (7382) [2022-11-20 11:20:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36983 states to 36983 states and 51659 transitions. [2022-11-20 11:20:53,626 INFO L78 Accepts]: Start accepts. Automaton has 36983 states and 51659 transitions. Word has length 921 [2022-11-20 11:20:53,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:20:53,627 INFO L495 AbstractCegarLoop]: Abstraction has 36983 states and 51659 transitions. [2022-11-20 11:20:53,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-20 11:20:53,627 INFO L276 IsEmpty]: Start isEmpty. Operand 36983 states and 51659 transitions. [2022-11-20 11:20:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2022-11-20 11:20:53,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:20:53,647 INFO L195 NwaCegarLoop]: trace histogram [116, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:53,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:20:53,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:20:53,864 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:20:53,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:53,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1020693434, now seen corresponding path program 1 times [2022-11-20 11:20:53,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:20:53,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931527402] [2022-11-20 11:20:53,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:53,866 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 11:20:53,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:20:53,867 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:20:53,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:21:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:08,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 4956 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:21:08,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:21:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16918 backedges. 739 proven. 0 refuted. 0 times theorem prover too weak. 16179 trivial. 0 not checked. [2022-11-20 11:21:14,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:21:14,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:21:14,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931527402] [2022-11-20 11:21:14,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931527402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:14,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:14,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:21:14,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053822546] [2022-11-20 11:21:14,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:14,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:21:14,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:21:14,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:21:14,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:21:14,063 INFO L87 Difference]: Start difference. First operand 36983 states and 51659 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-20 11:21:16,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:21:16,414 INFO L93 Difference]: Finished difference Result 73827 states and 103132 transitions. [2022-11-20 11:21:16,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:21:16,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 921 [2022-11-20 11:21:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:21:16,567 INFO L225 Difference]: With dead ends: 73827 [2022-11-20 11:21:16,568 INFO L226 Difference]: Without dead ends: 36983 [2022-11-20 11:21:16,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 919 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 11:21:16,659 INFO L413 NwaCegarLoop]: 2264 mSDtfsCounter, 2072 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:21:16,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2072 Valid, 2264 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:21:16,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36983 states. [2022-11-20 11:21:18,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36983 to 36983. [2022-11-20 11:21:18,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36983 states, 27589 states have (on average 1.348182246547537) internal successors, (37195), 27995 states have internal predecessors, (37195), 7050 states have call successors, (7050), 2336 states have call predecessors, (7050), 2343 states have return successors, (7382), 6995 states have call predecessors, (7382), 7048 states have call successors, (7382) [2022-11-20 11:21:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36983 states to 36983 states and 51627 transitions. [2022-11-20 11:21:19,075 INFO L78 Accepts]: Start accepts. Automaton has 36983 states and 51627 transitions. Word has length 921 [2022-11-20 11:21:19,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:21:19,076 INFO L495 AbstractCegarLoop]: Abstraction has 36983 states and 51627 transitions. [2022-11-20 11:21:19,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-20 11:21:19,077 INFO L276 IsEmpty]: Start isEmpty. Operand 36983 states and 51627 transitions. [2022-11-20 11:21:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 925 [2022-11-20 11:21:19,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:21:19,094 INFO L195 NwaCegarLoop]: trace histogram [116, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:19,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:21:19,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:21:19,308 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:21:19,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1554441444, now seen corresponding path program 1 times [2022-11-20 11:21:19,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:21:19,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923984725] [2022-11-20 11:21:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:19,310 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 11:21:19,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:21:19,311 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:21:19,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 (21)] Waiting until timeout for monitored process [2022-11-20 11:21:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:33,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 4966 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:21:33,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:21:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16918 backedges. 739 proven. 0 refuted. 0 times theorem prover too weak. 16179 trivial. 0 not checked. [2022-11-20 11:21:33,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:21:33,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:21:33,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923984725] [2022-11-20 11:21:33,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923984725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:33,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:33,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:21:33,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538833510] [2022-11-20 11:21:33,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:33,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:21:33,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:21:33,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:21:33,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:21:33,592 INFO L87 Difference]: Start difference. First operand 36983 states and 51627 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 3 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-20 11:21:36,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:21:36,072 INFO L93 Difference]: Finished difference Result 73864 states and 103112 transitions. [2022-11-20 11:21:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:21:36,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 3 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 924 [2022-11-20 11:21:36,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:21:36,208 INFO L225 Difference]: With dead ends: 73864 [2022-11-20 11:21:36,208 INFO L226 Difference]: Without dead ends: 36948 [2022-11-20 11:21:36,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:21:36,286 INFO L413 NwaCegarLoop]: 2269 mSDtfsCounter, 13 mSDsluCounter, 6784 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9053 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:21:36,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 9053 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:21:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36948 states. [2022-11-20 11:21:38,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36948 to 36878. [2022-11-20 11:21:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36878 states, 27514 states have (on average 1.3488405902449663) internal successors, (37112), 27920 states have internal predecessors, (37112), 7035 states have call successors, (7035), 2321 states have call predecessors, (7035), 2328 states have return successors, (7367), 6980 states have call predecessors, (7367), 7033 states have call successors, (7367) [2022-11-20 11:21:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36878 states to 36878 states and 51514 transitions. [2022-11-20 11:21:38,437 INFO L78 Accepts]: Start accepts. Automaton has 36878 states and 51514 transitions. Word has length 924 [2022-11-20 11:21:38,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:21:38,437 INFO L495 AbstractCegarLoop]: Abstraction has 36878 states and 51514 transitions. [2022-11-20 11:21:38,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 3 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-20 11:21:38,438 INFO L276 IsEmpty]: Start isEmpty. Operand 36878 states and 51514 transitions. [2022-11-20 11:21:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2022-11-20 11:21:38,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:21:38,450 INFO L195 NwaCegarLoop]: trace histogram [116, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:38,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:21:38,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:21:38,651 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:21:38,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:38,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1016225837, now seen corresponding path program 1 times [2022-11-20 11:21:38,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:21:38,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162825357] [2022-11-20 11:21:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:38,654 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 11:21:38,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:21:38,654 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:21:38,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 (22)] Waiting until timeout for monitored process [2022-11-20 11:21:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:53,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 4989 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:21:53,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:21:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 16921 backedges. 742 proven. 0 refuted. 0 times theorem prover too weak. 16179 trivial. 0 not checked. [2022-11-20 11:21:53,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:21:53,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:21:53,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162825357] [2022-11-20 11:21:53,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162825357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:53,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:53,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:21:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408275369] [2022-11-20 11:21:53,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:53,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:21:53,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:21:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:21:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:21:53,303 INFO L87 Difference]: Start difference. First operand 36878 states and 51514 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 3 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2022-11-20 11:21:55,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:21:55,636 INFO L93 Difference]: Finished difference Result 73844 states and 103207 transitions. [2022-11-20 11:21:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:21:55,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 3 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) Word has length 929 [2022-11-20 11:21:55,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:21:55,786 INFO L225 Difference]: With dead ends: 73844 [2022-11-20 11:21:55,787 INFO L226 Difference]: Without dead ends: 37105 [2022-11-20 11:21:55,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 926 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:21:55,892 INFO L413 NwaCegarLoop]: 2544 mSDtfsCounter, 314 mSDsluCounter, 4679 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 7223 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:21:55,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 7223 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:21:55,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37105 states. [2022-11-20 11:21:58,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37105 to 36894. [2022-11-20 11:21:58,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36894 states, 27530 states have (on average 1.3486378496185978) internal successors, (37128), 27936 states have internal predecessors, (37128), 7035 states have call successors, (7035), 2321 states have call predecessors, (7035), 2328 states have return successors, (7367), 6980 states have call predecessors, (7367), 7033 states have call successors, (7367) [2022-11-20 11:21:58,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36894 states to 36894 states and 51530 transitions. [2022-11-20 11:21:58,289 INFO L78 Accepts]: Start accepts. Automaton has 36894 states and 51530 transitions. Word has length 929 [2022-11-20 11:21:58,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:21:58,290 INFO L495 AbstractCegarLoop]: Abstraction has 36894 states and 51530 transitions. [2022-11-20 11:21:58,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 3 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2022-11-20 11:21:58,290 INFO L276 IsEmpty]: Start isEmpty. Operand 36894 states and 51530 transitions. [2022-11-20 11:21:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2022-11-20 11:21:58,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:21:58,303 INFO L195 NwaCegarLoop]: trace histogram [116, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 23, 23, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:58,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 (22)] Forceful destruction successful, exit code 0 [2022-11-20 11:21:58,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:21:58,503 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:21:58,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:58,504 INFO L85 PathProgramCache]: Analyzing trace with hash 155312503, now seen corresponding path program 1 times [2022-11-20 11:21:58,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:21:58,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742195646] [2022-11-20 11:21:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:58,506 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 11:21:58,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:21:58,507 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 11:21:58,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e6e6ed-9131-4a8f-9d8a-4599e0731901/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 (23)] Waiting until timeout for monitored process [2022-11-20 11:22:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:13,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 5088 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:22:13,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:22:13,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16922 backedges. 742 proven. 1 refuted. 0 times theorem prover too weak. 16179 trivial. 0 not checked. [2022-11-20 11:22:13,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:22:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16922 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 16910 trivial. 0 not checked. [2022-11-20 11:22:15,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:22:15,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742195646] [2022-11-20 11:22:15,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742195646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:22:15,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:22:15,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:22:15,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963377456] [2022-11-20 11:22:15,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:22:15,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:22:15,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:22:15,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:22:15,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:22:15,061 INFO L87 Difference]: Start difference. First operand 36894 states and 51530 transitions. Second operand has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 6 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (75), 6 states have call predecessors, (75), 6 states have call successors, (75)