./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--infiniband--core--ib_uverbs.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_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 9be531e7af87cba73be4f8246e93f3d32963d00e421fc44d0f45559eac1d9e7a --- 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 11:26:25,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:26:25,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:26:25,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:26:25,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:26:25,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:26:25,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:26:25,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:26:25,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:26:25,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:26:25,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:26:25,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:26:25,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:26:25,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:26:25,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:26:25,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:26:25,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:26:25,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:26:25,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:26:25,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:26:25,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:26:25,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:26:25,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:26:25,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:26:25,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:26:25,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:26:25,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:26:25,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:26:25,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:26:25,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:26:25,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:26:25,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:26:25,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:26:25,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:26:25,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:26:25,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:26:25,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:26:25,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:26:25,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:26:25,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:26:25,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:26:25,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:26:25,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:26:25,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:26:25,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:26:25,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:26:25,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:26:25,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:26:25,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:26:25,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:26:25,870 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:26:25,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:26:25,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:26:25,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:26:25,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:26:25,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:26:25,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:26:25,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:26:25,873 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:26:25,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:26:25,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:26:25,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:26:25,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:26:25,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:26:25,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:26:25,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:26:25,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:26:25,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:26:25,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:26:25,876 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:26:25,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:26:25,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:26:25,877 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_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9be531e7af87cba73be4f8246e93f3d32963d00e421fc44d0f45559eac1d9e7a [2022-11-20 11:26:26,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:26:26,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:26:26,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:26:26,276 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:26:26,276 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:26:26,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-20 11:26:29,848 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:26:30,762 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:26:30,763 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-20 11:26:30,842 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/data/1ede4d5e1/97cf752e51d84431b97e8b49628f166d/FLAG677ae24f4 [2022-11-20 11:26:30,867 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/data/1ede4d5e1/97cf752e51d84431b97e8b49628f166d [2022-11-20 11:26:30,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:26:30,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:26:30,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:26:30,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:26:30,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:26:30,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:26:30" (1/1) ... [2022-11-20 11:26:30,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6492e1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:30, skipping insertion in model container [2022-11-20 11:26:30,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:26:30" (1/1) ... [2022-11-20 11:26:30,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:26:31,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:26:33,279 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:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1638) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) 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:1646) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) 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 11:26:33,292 INFO L158 Benchmark]: Toolchain (without parser) took 2417.44ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 83.1MB in the beginning and 74.7MB in the end (delta: 8.4MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2022-11-20 11:26:33,292 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 127.9MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:26:33,295 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2412.84ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 82.7MB in the beginning and 74.7MB in the end (delta: 7.9MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2022-11-20 11:26:33,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 127.9MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2412.84ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 82.7MB in the beginning and 74.7MB in the end (delta: 7.9MB). Peak memory consumption was 36.6MB. 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_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 9be531e7af87cba73be4f8246e93f3d32963d00e421fc44d0f45559eac1d9e7a --- 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 11:26:36,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:26:36,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:26:36,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:26:36,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:26:36,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:26:36,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:26:36,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:26:36,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:26:36,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:26:36,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:26:36,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:26:36,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:26:36,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:26:36,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:26:36,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:26:36,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:26:36,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:26:36,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:26:36,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:26:36,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:26:36,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:26:36,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:26:36,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:26:36,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:26:36,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:26:36,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:26:36,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:26:36,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:26:36,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:26:36,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:26:36,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:26:36,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:26:36,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:26:36,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:26:36,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:26:36,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:26:36,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:26:36,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:26:36,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:26:36,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:26:36,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 11:26:36,168 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:26:36,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:26:36,169 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:26:36,169 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:26:36,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:26:36,170 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:26:36,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:26:36,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:26:36,172 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:26:36,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:26:36,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:26:36,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:26:36,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:26:36,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:26:36,173 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:26:36,173 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:26:36,174 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:26:36,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:26:36,174 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:26:36,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:26:36,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:26:36,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:26:36,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:26:36,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:26:36,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:26:36,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:26:36,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:26:36,176 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:26:36,177 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:26:36,177 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:26:36,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:26:36,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:26:36,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:26:36,178 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_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9be531e7af87cba73be4f8246e93f3d32963d00e421fc44d0f45559eac1d9e7a [2022-11-20 11:26:36,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:26:36,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:26:36,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:26:36,650 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:26:36,651 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:26:36,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-20 11:26:40,169 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:26:41,029 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:26:41,030 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-20 11:26:41,079 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/data/9562b15b6/54767a3fbfc045858478938550f65bb6/FLAG095da16a5 [2022-11-20 11:26:41,096 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/data/9562b15b6/54767a3fbfc045858478938550f65bb6 [2022-11-20 11:26:41,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:26:41,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:26:41,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:26:41,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:26:41,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:26:41,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:26:41" (1/1) ... [2022-11-20 11:26:41,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c4326d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:41, skipping insertion in model container [2022-11-20 11:26:41,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:26:41" (1/1) ... [2022-11-20 11:26:41,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:26:41,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:26:44,982 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_bc5b6bad-12df-434d-9e28-00ad107f9ca7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i[354644,354657] [2022-11-20 11:26:45,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:26:45,178 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:26:45,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:26:46,111 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_bc5b6bad-12df-434d-9e28-00ad107f9ca7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i[354644,354657] [2022-11-20 11:26:46,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:26:46,179 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:26:46,948 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_bc5b6bad-12df-434d-9e28-00ad107f9ca7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i[354644,354657] [2022-11-20 11:26:46,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:26:47,238 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:26:47,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:47 WrapperNode [2022-11-20 11:26:47,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:26:47,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:26:47,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:26:47,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:26:47,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:47" (1/1) ... [2022-11-20 11:26:47,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:47" (1/1) ... [2022-11-20 11:26:47,908 INFO L138 Inliner]: procedures = 386, calls = 4448, calls flagged for inlining = 172, calls inlined = 171, statements flattened = 9857 [2022-11-20 11:26:47,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:26:47,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:26:47,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:26:47,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:26:47,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:47" (1/1) ... [2022-11-20 11:26:47,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:47" (1/1) ... [2022-11-20 11:26:48,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:47" (1/1) ... [2022-11-20 11:26:48,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:47" (1/1) ... [2022-11-20 11:26:48,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:47" (1/1) ... [2022-11-20 11:26:48,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:47" (1/1) ... [2022-11-20 11:26:48,509 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:47" (1/1) ... [2022-11-20 11:26:48,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:47" (1/1) ... [2022-11-20 11:26:48,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:26:48,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:26:48,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:26:48,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:26:48,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:47" (1/1) ... [2022-11-20 11:26:48,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:26:48,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:26:48,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:26:48,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:26:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-20 11:26:48,859 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-20 11:26:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure put_qp_write [2022-11-20 11:26:48,860 INFO L138 BoogieDeclarations]: Found implementation of procedure put_qp_write [2022-11-20 11:26:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure fdget [2022-11-20 11:26:48,860 INFO L138 BoogieDeclarations]: Found implementation of procedure fdget [2022-11-20 11:26:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 11:26:48,861 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 11:26:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_cq [2022-11-20 11:26:48,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_cq [2022-11-20 11:26:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_close [2022-11-20 11:26:48,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_close [2022-11-20 11:26:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure idr_destroy [2022-11-20 11:26:48,862 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_destroy [2022-11-20 11:26:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-20 11:26:48,863 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-20 11:26:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 11:26:48,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 11:26:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_file [2022-11-20 11:26:48,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_file [2022-11-20 11:26:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure fdput [2022-11-20 11:26:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure fdput [2022-11-20 11:26:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 11:26:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 11:26:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_ucq [2022-11-20 11:26:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_ucq [2022-11-20 11:26:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure idr_add_uobj [2022-11-20 11:26:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_add_uobj [2022-11-20 11:26:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 11:26:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 11:26:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_ex_query_device [2022-11-20 11:26:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_ex_query_device [2022-11-20 11:26:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure idr_write_uobj [2022-11-20 11:26:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_write_uobj [2022-11-20 11:26:48,869 INFO L130 BoogieDeclarations]: Found specification of procedure __init_rwsem [2022-11-20 11:26:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_rwsem [2022-11-20 11:26:48,869 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_poll [2022-11-20 11:26:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_poll [2022-11-20 11:26:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-20 11:26:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure __uverbs_create_xsrq [2022-11-20 11:26:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __uverbs_create_xsrq [2022-11-20 11:26:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_fasync [2022-11-20 11:26:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_fasync [2022-11-20 11:26:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure copy_query_dev_fields [2022-11-20 11:26:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_query_dev_fields [2022-11-20 11:26:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-20 11:26:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-20 11:26:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-20 11:26:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 11:26:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 11:26:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure put_uobj [2022-11-20 11:26:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure put_uobj [2022-11-20 11:26:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:26:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 11:26:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:26:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-20 11:26:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-20 11:26:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 11:26:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_obj [2022-11-20 11:26:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_obj [2022-11-20 11:26:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 11:26:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove_uobj [2022-11-20 11:26:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove_uobj [2022-11-20 11:26:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-20 11:26:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-20 11:26:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-20 11:26:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-20 11:26:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_ah [2022-11-20 11:26:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_ah [2022-11-20 11:26:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 11:26:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 11:26:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-20 11:26:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-20 11:26:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 11:26:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 11:26:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_srq [2022-11-20 11:26:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_srq [2022-11-20 11:26:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-20 11:26:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-20 11:26:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure __idr_get_uobj [2022-11-20 11:26:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __idr_get_uobj [2022-11-20 11:26:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-20 11:26:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-20 11:26:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure put_srq_read [2022-11-20 11:26:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure put_srq_read [2022-11-20 11:26:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 11:26:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 11:26:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-20 11:26:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-20 11:26:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure create_cq [2022-11-20 11:26:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure create_cq [2022-11-20 11:26:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-20 11:26:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-20 11:26:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-20 11:26:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-20 11:26:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 11:26:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 11:26:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-20 11:26:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-20 11:26:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-20 11:26:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-20 11:26:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 11:26:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 11:26:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:26:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:26:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_xrcd [2022-11-20 11:26:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_xrcd [2022-11-20 11:26:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-20 11:26:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-20 11:26:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:26:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure ib_check_mr_access [2022-11-20 11:26:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_check_mr_access [2022-11-20 11:26:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 11:26:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 11:26:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 11:26:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 11:26:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 11:26:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 11:26:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-20 11:26:48,900 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-20 11:26:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_flow [2022-11-20 11:26:48,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_flow [2022-11-20 11:26:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure xrcd_table_delete [2022-11-20 11:26:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure xrcd_table_delete [2022-11-20 11:26:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_remove_one [2022-11-20 11:26:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_remove_one [2022-11-20 11:26:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 11:26:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 11:26:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-20 11:26:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-20 11:26:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_add_one [2022-11-20 11:26:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_add_one [2022-11-20 11:26:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure put_qp_read [2022-11-20 11:26:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure put_qp_read [2022-11-20 11:26:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2022-11-20 11:26:48,910 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2022-11-20 11:26:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-20 11:26:48,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-20 11:26:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_uevent [2022-11-20 11:26:48,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_uevent [2022-11-20 11:26:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 11:26:48,911 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 11:26:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure put_cq_read [2022-11-20 11:26:48,911 INFO L138 BoogieDeclarations]: Found implementation of procedure put_cq_read [2022-11-20 11:26:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 11:26:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:26:48,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:26:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 11:26:48,912 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 11:26:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_open [2022-11-20 11:26:48,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_open [2022-11-20 11:26:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 11:26:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_close [2022-11-20 11:26:48,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_close [2022-11-20 11:26:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_qp [2022-11-20 11:26:48,913 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_qp [2022-11-20 11:26:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-20 11:26:48,913 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-20 11:26:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 11:26:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:26:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2022-11-20 11:26:48,914 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2022-11-20 11:26:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 11:26:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 11:26:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 11:26:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 11:26:48,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 11:26:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure ib_query_device [2022-11-20 11:26:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_query_device [2022-11-20 11:26:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure fd_install [2022-11-20 11:26:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure fd_install [2022-11-20 11:26:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure ib_copy_to_udata [2022-11-20 11:26:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_copy_to_udata [2022-11-20 11:26:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure put_pd_read [2022-11-20 11:26:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pd_read [2022-11-20 11:26:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure idr_write_qp [2022-11-20 11:26:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_write_qp [2022-11-20 11:26:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-20 11:26:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-20 11:26:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_uobj [2022-11-20 11:26:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_uobj [2022-11-20 11:26:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_xrcd [2022-11-20 11:26:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_xrcd [2022-11-20 11:26:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 11:26:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 11:26:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 11:26:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 11:26:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub_and_test [2022-11-20 11:26:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub_and_test [2022-11-20 11:26:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_pd [2022-11-20 11:26:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_pd [2022-11-20 11:26:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-20 11:26:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-20 11:26:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-20 11:26:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-20 11:26:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 11:26:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 11:26:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:26:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:26:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_unmarshall_recv [2022-11-20 11:26:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_unmarshall_recv [2022-11-20 11:26:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-20 11:26:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-20 11:26:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_mmap [2022-11-20 11:26:48,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_mmap [2022-11-20 11:26:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:26:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 11:26:48,923 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 11:26:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure init_uobj [2022-11-20 11:26:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure init_uobj [2022-11-20 11:26:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure put_xrcd_read [2022-11-20 11:26:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure put_xrcd_read [2022-11-20 11:26:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:26:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_alloc_event_file [2022-11-20 11:26:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_alloc_event_file [2022-11-20 11:26:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2022-11-20 11:26:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2022-11-20 11:26:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-20 11:26:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-20 11:26:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 11:26:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 11:26:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 11:26:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:26:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:26:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_qp [2022-11-20 11:26:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_qp [2022-11-20 11:26:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-11-20 11:26:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-11-20 11:26:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-20 11:26:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-20 11:26:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 11:26:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 11:26:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-20 11:26:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-20 11:26:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure put_uobj_read [2022-11-20 11:26:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure put_uobj_read [2022-11-20 11:26:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~X~$Pointer$~TO~C_INT [2022-11-20 11:26:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~X~$Pointer$~TO~C_INT [2022-11-20 11:26:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_write [2022-11-20 11:26:48,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_write [2022-11-20 11:26:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure xrcd_table_search [2022-11-20 11:26:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure xrcd_table_search [2022-11-20 11:26:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-20 11:26:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-20 11:26:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_mw [2022-11-20 11:26:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_mw [2022-11-20 11:26:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure put_uobj_write [2022-11-20 11:26:48,936 INFO L138 BoogieDeclarations]: Found implementation of procedure put_uobj_write [2022-11-20 11:26:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 11:26:48,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 11:26:48,938 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dereg_mr [2022-11-20 11:26:48,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dereg_mr [2022-11-20 11:26:48,939 INFO L130 BoogieDeclarations]: Found specification of procedure put_unused_fd [2022-11-20 11:26:48,939 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unused_fd [2022-11-20 11:26:48,939 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 11:26:48,939 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 11:26:48,939 INFO L130 BoogieDeclarations]: Found specification of procedure modify_qp_mask [2022-11-20 11:26:48,939 INFO L138 BoogieDeclarations]: Found implementation of procedure modify_qp_mask [2022-11-20 11:26:48,940 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-11-20 11:26:48,940 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-11-20 11:26:48,940 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-20 11:26:48,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-20 11:26:48,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 11:26:48,940 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_zero_bit [2022-11-20 11:26:48,940 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_zero_bit [2022-11-20 11:26:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 11:26:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 11:26:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 11:26:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 11:26:48,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 11:26:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-20 11:26:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-20 11:26:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 11:26:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 11:26:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure get_unused_fd_flags [2022-11-20 11:26:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unused_fd_flags [2022-11-20 11:26:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 11:26:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 11:26:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-20 11:26:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-20 11:26:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-20 11:26:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-20 11:26:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-20 11:26:48,944 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-20 11:26:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2022-11-20 11:26:48,944 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2022-11-20 11:26:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get___0 [2022-11-20 11:26:48,944 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get___0 [2022-11-20 11:26:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-20 11:26:48,944 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-20 11:26:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~X~$Pointer$~TO~C_INT [2022-11-20 11:26:48,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~X~$Pointer$~TO~C_INT [2022-11-20 11:26:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure ib_detach_mcast [2022-11-20 11:26:48,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_detach_mcast [2022-11-20 11:26:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-20 11:26:48,945 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-20 11:26:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2022-11-20 11:26:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2022-11-20 11:26:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_cq [2022-11-20 11:26:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_cq [2022-11-20 11:26:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_srq [2022-11-20 11:26:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_srq [2022-11-20 11:26:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-20 11:26:48,947 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-20 11:26:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2022-11-20 11:26:48,947 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2022-11-20 11:26:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure ib_copy_from_udata [2022-11-20 11:26:48,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_copy_from_udata [2022-11-20 11:26:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_pd [2022-11-20 11:26:48,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_pd [2022-11-20 11:26:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-20 11:26:48,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-20 11:26:50,566 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:26:50,571 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:26:51,970 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 11:28:51,170 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:28:51,211 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:28:51,212 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:28:51,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:28:51 BoogieIcfgContainer [2022-11-20 11:28:51,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:28:51,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:28:51,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:28:51,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:28:51,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:26:41" (1/3) ... [2022-11-20 11:28:51,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694814a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:28:51, skipping insertion in model container [2022-11-20 11:28:51,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:47" (2/3) ... [2022-11-20 11:28:51,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694814a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:28:51, skipping insertion in model container [2022-11-20 11:28:51,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:28:51" (3/3) ... [2022-11-20 11:28:51,234 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-20 11:28:51,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:28:51,259 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:28:51,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:28:51,411 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;@1038b777, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:28:51,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:28:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 2932 states, 1933 states have (on average 1.3616140713916192) internal successors, (2632), 2009 states have internal predecessors, (2632), 859 states have call successors, (859), 139 states have call predecessors, (859), 138 states have return successors, (850), 844 states have call predecessors, (850), 850 states have call successors, (850) [2022-11-20 11:28:51,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-11-20 11:28:51,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:28:51,490 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:51,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:28:51,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1029221318, now seen corresponding path program 1 times [2022-11-20 11:28:51,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:28:51,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516008012] [2022-11-20 11:28:51,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:51,524 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 11:28:51,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:28:51,535 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:28:51,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:28:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:57,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 3024 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:28:57,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:28:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2399 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 2105 trivial. 0 not checked. [2022-11-20 11:28:57,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:28:57,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:28:57,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516008012] [2022-11-20 11:28:57,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516008012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:57,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:57,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:28:57,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34611555] [2022-11-20 11:28:57,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:57,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:28:57,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:28:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:28:57,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:28:57,846 INFO L87 Difference]: Start difference. First operand has 2932 states, 1933 states have (on average 1.3616140713916192) internal successors, (2632), 2009 states have internal predecessors, (2632), 859 states have call successors, (859), 139 states have call predecessors, (859), 138 states have return successors, (850), 844 states have call predecessors, (850), 850 states have call successors, (850) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 11:28:58,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:28:58,197 INFO L93 Difference]: Finished difference Result 5859 states and 8915 transitions. [2022-11-20 11:28:58,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:28:58,200 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 417 [2022-11-20 11:28:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:28:58,253 INFO L225 Difference]: With dead ends: 5859 [2022-11-20 11:28:58,253 INFO L226 Difference]: Without dead ends: 2916 [2022-11-20 11:28:58,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 416 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 11:28:58,300 INFO L413 NwaCegarLoop]: 4336 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, 4336 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 11:28:58,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4336 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:28:58,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2022-11-20 11:28:58,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2916. [2022-11-20 11:28:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 1928 states have (on average 1.3563278008298756) internal successors, (2615), 1993 states have internal predecessors, (2615), 850 states have call successors, (850), 138 states have call predecessors, (850), 137 states have return successors, (848), 842 states have call predecessors, (848), 848 states have call successors, (848) [2022-11-20 11:28:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4313 transitions. [2022-11-20 11:28:58,609 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4313 transitions. Word has length 417 [2022-11-20 11:28:58,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:28:58,618 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 4313 transitions. [2022-11-20 11:28:58,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 11:28:58,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4313 transitions. [2022-11-20 11:28:58,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-11-20 11:28:58,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:28:58,639 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:58,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:28:58,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:28:58,840 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:28:58,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:58,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2108317016, now seen corresponding path program 1 times [2022-11-20 11:28:58,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:28:58,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414153613] [2022-11-20 11:28:58,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:58,850 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 11:28:58,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:28:58,851 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:28:58,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:06,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 3024 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:29:06,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2399 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 2309 trivial. 0 not checked. [2022-11-20 11:29:06,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:06,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:06,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414153613] [2022-11-20 11:29:06,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414153613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:06,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:06,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:29:06,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759479751] [2022-11-20 11:29:06,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:06,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:29:06,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:06,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:29:06,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:29:06,780 INFO L87 Difference]: Start difference. First operand 2916 states and 4313 transitions. Second operand has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-20 11:29:08,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:08,381 INFO L93 Difference]: Finished difference Result 5800 states and 8622 transitions. [2022-11-20 11:29:08,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:29:08,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 417 [2022-11-20 11:29:08,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:08,414 INFO L225 Difference]: With dead ends: 5800 [2022-11-20 11:29:08,415 INFO L226 Difference]: Without dead ends: 2917 [2022-11-20 11:29:08,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:29:08,442 INFO L413 NwaCegarLoop]: 4299 mSDtfsCounter, 6 mSDsluCounter, 17144 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21443 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:08,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21443 Invalid, 148 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 11:29:08,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-11-20 11:29:08,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2917. [2022-11-20 11:29:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 1929 states have (on average 1.3561430793157077) internal successors, (2616), 1994 states have internal predecessors, (2616), 850 states have call successors, (850), 138 states have call predecessors, (850), 137 states have return successors, (848), 842 states have call predecessors, (848), 848 states have call successors, (848) [2022-11-20 11:29:08,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4314 transitions. [2022-11-20 11:29:08,601 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4314 transitions. Word has length 417 [2022-11-20 11:29:08,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:08,607 INFO L495 AbstractCegarLoop]: Abstraction has 2917 states and 4314 transitions. [2022-11-20 11:29:08,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-20 11:29:08,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4314 transitions. [2022-11-20 11:29:08,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-11-20 11:29:08,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:08,622 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:08,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:08,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:08,838 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:08,839 INFO L85 PathProgramCache]: Analyzing trace with hash 141929843, now seen corresponding path program 1 times [2022-11-20 11:29:08,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:08,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586311627] [2022-11-20 11:29:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:08,843 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 11:29:08,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:08,844 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:08,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:16,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 3145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:29:16,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 120 proven. 1 refuted. 0 times theorem prover too weak. 2454 trivial. 0 not checked. [2022-11-20 11:29:16,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 2474 trivial. 0 not checked. [2022-11-20 11:29:18,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:18,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586311627] [2022-11-20 11:29:18,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586311627] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:18,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:18,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-20 11:29:18,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062371142] [2022-11-20 11:29:18,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:18,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:29:18,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:29:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:29:18,444 INFO L87 Difference]: Start difference. First operand 2917 states and 4314 transitions. Second operand has 11 states, 9 states have (on average 9.666666666666666) internal successors, (87), 11 states have internal predecessors, (87), 4 states have call successors, (45), 2 states have call predecessors, (45), 5 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) [2022-11-20 11:29:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:20,816 INFO L93 Difference]: Finished difference Result 5807 states and 8630 transitions. [2022-11-20 11:29:20,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:29:20,817 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.666666666666666) internal successors, (87), 11 states have internal predecessors, (87), 4 states have call successors, (45), 2 states have call predecessors, (45), 5 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) Word has length 428 [2022-11-20 11:29:20,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:20,844 INFO L225 Difference]: With dead ends: 5807 [2022-11-20 11:29:20,844 INFO L226 Difference]: Without dead ends: 2923 [2022-11-20 11:29:20,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 857 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:29:20,871 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 8 mSDsluCounter, 25707 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 30007 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:20,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 30007 Invalid, 239 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 11:29:20,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2022-11-20 11:29:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2923. [2022-11-20 11:29:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 1933 states have (on average 1.355406104500776) internal successors, (2620), 1998 states have internal predecessors, (2620), 851 states have call successors, (851), 139 states have call predecessors, (851), 138 states have return successors, (849), 843 states have call predecessors, (849), 849 states have call successors, (849) [2022-11-20 11:29:21,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 4320 transitions. [2022-11-20 11:29:21,016 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 4320 transitions. Word has length 428 [2022-11-20 11:29:21,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:21,017 INFO L495 AbstractCegarLoop]: Abstraction has 2923 states and 4320 transitions. [2022-11-20 11:29:21,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.666666666666666) internal successors, (87), 11 states have internal predecessors, (87), 4 states have call successors, (45), 2 states have call predecessors, (45), 5 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) [2022-11-20 11:29:21,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 4320 transitions. [2022-11-20 11:29:21,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-11-20 11:29:21,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:21,030 INFO L195 NwaCegarLoop]: trace histogram [22, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:21,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:21,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:21,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:21,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:21,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1829420920, now seen corresponding path program 2 times [2022-11-20 11:29:21,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:21,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70383596] [2022-11-20 11:29:21,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:29:21,251 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 11:29:21,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:21,252 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:21,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:25,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:29:25,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:29:26,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:29:26,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2872 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2872 trivial. 0 not checked. [2022-11-20 11:29:31,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:31,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:31,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70383596] [2022-11-20 11:29:31,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70383596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:31,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:31,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:29:31,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816916878] [2022-11-20 11:29:31,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:31,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:31,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:31,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:31,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:31,139 INFO L87 Difference]: Start difference. First operand 2923 states and 4320 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-20 11:29:31,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:31,608 INFO L93 Difference]: Finished difference Result 8629 states and 12944 transitions. [2022-11-20 11:29:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:31,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 439 [2022-11-20 11:29:31,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:31,662 INFO L225 Difference]: With dead ends: 8629 [2022-11-20 11:29:31,663 INFO L226 Difference]: Without dead ends: 5755 [2022-11-20 11:29:31,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 437 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 11:29:31,700 INFO L413 NwaCegarLoop]: 5218 mSDtfsCounter, 4181 mSDsluCounter, 4223 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4181 SdHoareTripleChecker+Valid, 9441 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:31,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4181 Valid, 9441 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:29:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5755 states. [2022-11-20 11:29:32,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5755 to 5752. [2022-11-20 11:29:32,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5752 states, 3818 states have (on average 1.35882661079099) internal successors, (5188), 3947 states have internal predecessors, (5188), 1660 states have call successors, (1660), 274 states have call predecessors, (1660), 273 states have return successors, (1665), 1646 states have call predecessors, (1665), 1658 states have call successors, (1665) [2022-11-20 11:29:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5752 states to 5752 states and 8513 transitions. [2022-11-20 11:29:32,081 INFO L78 Accepts]: Start accepts. Automaton has 5752 states and 8513 transitions. Word has length 439 [2022-11-20 11:29:32,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:32,084 INFO L495 AbstractCegarLoop]: Abstraction has 5752 states and 8513 transitions. [2022-11-20 11:29:32,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-20 11:29:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5752 states and 8513 transitions. [2022-11-20 11:29:32,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2022-11-20 11:29:32,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:32,094 INFO L195 NwaCegarLoop]: trace histogram [22, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-20 11:29:32,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:32,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:32,319 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:32,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:32,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1224378032, now seen corresponding path program 1 times [2022-11-20 11:29:32,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:32,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029718904] [2022-11-20 11:29:32,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:32,324 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 11:29:32,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:32,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:32,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:39,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 3453 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:29:39,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2875 backedges. 170 proven. 3 refuted. 0 times theorem prover too weak. 2702 trivial. 0 not checked. [2022-11-20 11:29:40,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2875 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 2722 trivial. 0 not checked. [2022-11-20 11:29:42,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:42,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029718904] [2022-11-20 11:29:42,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029718904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:42,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:42,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-20 11:29:42,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319452681] [2022-11-20 11:29:42,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:42,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:29:42,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:29:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:29:42,124 INFO L87 Difference]: Start difference. First operand 5752 states and 8513 transitions. Second operand has 13 states, 11 states have (on average 9.454545454545455) internal successors, (104), 13 states have internal predecessors, (104), 4 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-20 11:29:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:44,863 INFO L93 Difference]: Finished difference Result 11478 states and 17063 transitions. [2022-11-20 11:29:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:29:44,865 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.454545454545455) internal successors, (104), 13 states have internal predecessors, (104), 4 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) Word has length 464 [2022-11-20 11:29:44,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:44,910 INFO L225 Difference]: With dead ends: 11478 [2022-11-20 11:29:44,911 INFO L226 Difference]: Without dead ends: 5754 [2022-11-20 11:29:44,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 915 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:29:44,942 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 9 mSDsluCounter, 25700 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 30000 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:44,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 30000 Invalid, 269 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [48 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 11:29:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5754 states. [2022-11-20 11:29:45,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5754 to 5754. [2022-11-20 11:29:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5754 states, 3820 states have (on average 1.3586387434554974) internal successors, (5190), 3949 states have internal predecessors, (5190), 1660 states have call successors, (1660), 274 states have call predecessors, (1660), 273 states have return successors, (1665), 1646 states have call predecessors, (1665), 1658 states have call successors, (1665) [2022-11-20 11:29:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5754 states to 5754 states and 8515 transitions. [2022-11-20 11:29:45,310 INFO L78 Accepts]: Start accepts. Automaton has 5754 states and 8515 transitions. Word has length 464 [2022-11-20 11:29:45,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:45,311 INFO L495 AbstractCegarLoop]: Abstraction has 5754 states and 8515 transitions. [2022-11-20 11:29:45,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 9.454545454545455) internal successors, (104), 13 states have internal predecessors, (104), 4 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-20 11:29:45,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5754 states and 8515 transitions. [2022-11-20 11:29:45,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-11-20 11:29:45,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:45,320 INFO L195 NwaCegarLoop]: trace histogram [33, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-20 11:29:45,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:45,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:45,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:45,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:45,548 INFO L85 PathProgramCache]: Analyzing trace with hash 149878229, now seen corresponding path program 2 times [2022-11-20 11:29:45,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:45,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412400208] [2022-11-20 11:29:45,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:29:45,550 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 11:29:45,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:45,552 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:45,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:50,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:29:50,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:29:50,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 2068 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:29:50,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3293 trivial. 0 not checked. [2022-11-20 11:29:50,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:50,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:50,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412400208] [2022-11-20 11:29:50,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412400208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:50,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:50,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:50,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403901467] [2022-11-20 11:29:50,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:50,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:50,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:50,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:50,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:50,603 INFO L87 Difference]: Start difference. First operand 5754 states and 8515 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 11:29:51,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:51,667 INFO L93 Difference]: Finished difference Result 17008 states and 25861 transitions. [2022-11-20 11:29:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:51,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 475 [2022-11-20 11:29:51,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:51,759 INFO L225 Difference]: With dead ends: 17008 [2022-11-20 11:29:51,760 INFO L226 Difference]: Without dead ends: 11323 [2022-11-20 11:29:51,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 473 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 11:29:51,793 INFO L413 NwaCegarLoop]: 5318 mSDtfsCounter, 4404 mSDsluCounter, 4348 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4404 SdHoareTripleChecker+Valid, 9666 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:51,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4404 Valid, 9666 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:29:51,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11323 states. [2022-11-20 11:29:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11323 to 11292. [2022-11-20 11:29:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11292 states, 7505 states have (on average 1.3608261159227182) internal successors, (10213), 7759 states have internal predecessors, (10213), 3247 states have call successors, (3247), 540 states have call predecessors, (3247), 539 states have return successors, (3945), 3222 states have call predecessors, (3945), 3245 states have call successors, (3945) [2022-11-20 11:29:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11292 states to 11292 states and 17405 transitions. [2022-11-20 11:29:52,548 INFO L78 Accepts]: Start accepts. Automaton has 11292 states and 17405 transitions. Word has length 475 [2022-11-20 11:29:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:52,551 INFO L495 AbstractCegarLoop]: Abstraction has 11292 states and 17405 transitions. [2022-11-20 11:29:52,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 11:29:52,551 INFO L276 IsEmpty]: Start isEmpty. Operand 11292 states and 17405 transitions. [2022-11-20 11:29:52,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-11-20 11:29:52,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:52,558 INFO L195 NwaCegarLoop]: trace histogram [33, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-20 11:29:52,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:52,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:52,771 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:52,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:52,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1218176684, now seen corresponding path program 1 times [2022-11-20 11:29:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:52,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666760161] [2022-11-20 11:29:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:52,775 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 11:29:52,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:52,777 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:29:52,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:00,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 3590 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:30:00,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3293 backedges. 240 proven. 6 refuted. 0 times theorem prover too weak. 3047 trivial. 0 not checked. [2022-11-20 11:30:00,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3293 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 3067 trivial. 0 not checked. [2022-11-20 11:30:03,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:03,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666760161] [2022-11-20 11:30:03,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666760161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:03,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:30:03,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-20 11:30:03,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296609779] [2022-11-20 11:30:03,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:03,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:30:03,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:03,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:30:03,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:30:03,379 INFO L87 Difference]: Start difference. First operand 11292 states and 17405 transitions. Second operand has 15 states, 13 states have (on average 8.76923076923077) internal successors, (114), 15 states have internal predecessors, (114), 4 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-20 11:30:06,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:06,981 INFO L93 Difference]: Finished difference Result 22564 states and 34971 transitions. [2022-11-20 11:30:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:30:06,983 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 8.76923076923077) internal successors, (114), 15 states have internal predecessors, (114), 4 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) Word has length 483 [2022-11-20 11:30:06,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:07,067 INFO L225 Difference]: With dead ends: 22564 [2022-11-20 11:30:07,067 INFO L226 Difference]: Without dead ends: 11296 [2022-11-20 11:30:07,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 951 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:30:07,156 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 12 mSDsluCounter, 34250 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 38550 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:07,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 38550 Invalid, 353 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 11:30:07,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11296 states. [2022-11-20 11:30:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11296 to 11296. [2022-11-20 11:30:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11296 states, 7509 states have (on average 1.3606339059794912) internal successors, (10217), 7763 states have internal predecessors, (10217), 3247 states have call successors, (3247), 540 states have call predecessors, (3247), 539 states have return successors, (3945), 3222 states have call predecessors, (3945), 3245 states have call successors, (3945) [2022-11-20 11:30:08,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11296 states to 11296 states and 17409 transitions. [2022-11-20 11:30:08,131 INFO L78 Accepts]: Start accepts. Automaton has 11296 states and 17409 transitions. Word has length 483 [2022-11-20 11:30:08,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:08,132 INFO L495 AbstractCegarLoop]: Abstraction has 11296 states and 17409 transitions. [2022-11-20 11:30:08,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 8.76923076923077) internal successors, (114), 15 states have internal predecessors, (114), 4 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-20 11:30:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 11296 states and 17409 transitions. [2022-11-20 11:30:08,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-11-20 11:30:08,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:08,140 INFO L195 NwaCegarLoop]: trace histogram [44, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-20 11:30:08,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:08,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:08,367 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:30:08,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:08,368 INFO L85 PathProgramCache]: Analyzing trace with hash 595651503, now seen corresponding path program 2 times [2022-11-20 11:30:08,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:08,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117813534] [2022-11-20 11:30:08,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:30:08,372 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 11:30:08,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:08,374 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:08,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:13,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:30:13,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:30:13,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2084 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:30:13,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3832 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3832 trivial. 0 not checked. [2022-11-20 11:30:13,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:30:13,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:13,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117813534] [2022-11-20 11:30:13,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117813534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:13,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:13,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:30:13,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307749588] [2022-11-20 11:30:13,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:13,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:30:13,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:13,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:30:13,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:30:13,615 INFO L87 Difference]: Start difference. First operand 11296 states and 17409 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 11:30:14,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:14,474 INFO L93 Difference]: Finished difference Result 20767 states and 31741 transitions. [2022-11-20 11:30:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:30:14,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 494 [2022-11-20 11:30:14,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:14,539 INFO L225 Difference]: With dead ends: 20767 [2022-11-20 11:30:14,539 INFO L226 Difference]: Without dead ends: 9540 [2022-11-20 11:30:14,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 492 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 11:30:14,603 INFO L413 NwaCegarLoop]: 4234 mSDtfsCounter, 4224 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4224 SdHoareTripleChecker+Valid, 4234 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:14,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4224 Valid, 4234 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:30:14,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9540 states. [2022-11-20 11:30:15,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9540 to 9362. [2022-11-20 11:30:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9362 states, 6161 states have (on average 1.347346210030839) internal successors, (8301), 6405 states have internal predecessors, (8301), 2693 states have call successors, (2693), 502 states have call predecessors, (2693), 507 states have return successors, (3229), 2664 states have call predecessors, (3229), 2691 states have call successors, (3229) [2022-11-20 11:30:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9362 states to 9362 states and 14223 transitions. [2022-11-20 11:30:15,435 INFO L78 Accepts]: Start accepts. Automaton has 9362 states and 14223 transitions. Word has length 494 [2022-11-20 11:30:15,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:15,436 INFO L495 AbstractCegarLoop]: Abstraction has 9362 states and 14223 transitions. [2022-11-20 11:30:15,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 11:30:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 9362 states and 14223 transitions. [2022-11-20 11:30:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-11-20 11:30:15,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:15,443 INFO L195 NwaCegarLoop]: trace histogram [44, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-20 11:30:15,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:15,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:15,667 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:30:15,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:15,668 INFO L85 PathProgramCache]: Analyzing trace with hash -595053204, now seen corresponding path program 1 times [2022-11-20 11:30:15,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:15,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070381513] [2022-11-20 11:30:15,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:15,670 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 11:30:15,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:15,671 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:15,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:23,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 3737 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:30:23,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3832 backedges. 330 proven. 10 refuted. 0 times theorem prover too weak. 3492 trivial. 0 not checked. [2022-11-20 11:30:23,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3832 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 3512 trivial. 0 not checked. [2022-11-20 11:30:26,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:26,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070381513] [2022-11-20 11:30:26,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070381513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:26,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:30:26,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-20 11:30:26,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487422699] [2022-11-20 11:30:26,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:26,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:30:26,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:30:26,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:30:26,815 INFO L87 Difference]: Start difference. First operand 9362 states and 14223 transitions. Second operand has 17 states, 15 states have (on average 8.133333333333333) internal successors, (122), 17 states have internal predecessors, (122), 4 states have call successors, (61), 2 states have call predecessors, (61), 5 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2022-11-20 11:30:31,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:31,807 INFO L93 Difference]: Finished difference Result 18725 states and 28581 transitions. [2022-11-20 11:30:31,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:30:31,809 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 8.133333333333333) internal successors, (122), 17 states have internal predecessors, (122), 4 states have call successors, (61), 2 states have call predecessors, (61), 5 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) Word has length 498 [2022-11-20 11:30:31,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:31,870 INFO L225 Difference]: With dead ends: 18725 [2022-11-20 11:30:31,871 INFO L226 Difference]: Without dead ends: 9398 [2022-11-20 11:30:31,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:30:31,916 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 16 mSDsluCounter, 50442 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 54661 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:31,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 54661 Invalid, 533 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 11:30:31,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9398 states. [2022-11-20 11:30:32,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9398 to 9398. [2022-11-20 11:30:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9398 states, 6193 states have (on average 1.3461973195543355) internal successors, (8337), 6437 states have internal predecessors, (8337), 2693 states have call successors, (2693), 506 states have call predecessors, (2693), 511 states have return successors, (3229), 2664 states have call predecessors, (3229), 2691 states have call successors, (3229) [2022-11-20 11:30:32,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9398 states to 9398 states and 14259 transitions. [2022-11-20 11:30:32,735 INFO L78 Accepts]: Start accepts. Automaton has 9398 states and 14259 transitions. Word has length 498 [2022-11-20 11:30:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:32,736 INFO L495 AbstractCegarLoop]: Abstraction has 9398 states and 14259 transitions. [2022-11-20 11:30:32,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 8.133333333333333) internal successors, (122), 17 states have internal predecessors, (122), 4 states have call successors, (61), 2 states have call predecessors, (61), 5 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2022-11-20 11:30:32,737 INFO L276 IsEmpty]: Start isEmpty. Operand 9398 states and 14259 transitions. [2022-11-20 11:30:32,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-11-20 11:30:32,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:32,743 INFO L195 NwaCegarLoop]: trace histogram [50, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-20 11:30:32,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-20 11:30:32,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:32,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:30:32,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:32,968 INFO L85 PathProgramCache]: Analyzing trace with hash 419944976, now seen corresponding path program 2 times [2022-11-20 11:30:32,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:32,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349622341] [2022-11-20 11:30:32,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:30:32,972 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 11:30:32,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:32,974 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:33,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:37,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:30:37,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:30:38,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:30:38,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4177 trivial. 0 not checked. [2022-11-20 11:30:38,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:30:38,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:38,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349622341] [2022-11-20 11:30:38,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349622341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:38,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:38,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:30:38,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079169314] [2022-11-20 11:30:38,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:38,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:30:38,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:38,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:30:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:30:38,146 INFO L87 Difference]: Start difference. First operand 9398 states and 14259 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 11:30:38,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:38,945 INFO L93 Difference]: Finished difference Result 18305 states and 27765 transitions. [2022-11-20 11:30:38,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:30:38,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 504 [2022-11-20 11:30:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:39,008 INFO L225 Difference]: With dead ends: 18305 [2022-11-20 11:30:39,008 INFO L226 Difference]: Without dead ends: 8976 [2022-11-20 11:30:39,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 502 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 11:30:39,054 INFO L413 NwaCegarLoop]: 4073 mSDtfsCounter, 4068 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4068 SdHoareTripleChecker+Valid, 4073 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:39,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4068 Valid, 4073 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:30:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8976 states. [2022-11-20 11:30:39,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8976 to 8976. [2022-11-20 11:30:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8976 states, 5893 states have (on average 1.3414220261327) internal successors, (7905), 6125 states have internal predecessors, (7905), 2585 states have call successors, (2585), 492 states have call predecessors, (2585), 497 states have return successors, (3109), 2560 states have call predecessors, (3109), 2583 states have call successors, (3109) [2022-11-20 11:30:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 13599 transitions. [2022-11-20 11:30:39,834 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 13599 transitions. Word has length 504 [2022-11-20 11:30:39,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:39,835 INFO L495 AbstractCegarLoop]: Abstraction has 8976 states and 13599 transitions. [2022-11-20 11:30:39,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 11:30:39,836 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 13599 transitions. [2022-11-20 11:30:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-11-20 11:30:39,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:39,841 INFO L195 NwaCegarLoop]: trace histogram [50, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-20 11:30:39,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:40,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:40,068 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:30:40,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:40,068 INFO L85 PathProgramCache]: Analyzing trace with hash 413556335, now seen corresponding path program 1 times [2022-11-20 11:30:40,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:40,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690016558] [2022-11-20 11:30:40,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:40,072 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 11:30:40,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:40,074 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:40,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:48,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 3835 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:30:48,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4177 backedges. 410 proven. 15 refuted. 0 times theorem prover too weak. 3752 trivial. 0 not checked. [2022-11-20 11:30:49,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4177 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 3772 trivial. 0 not checked. [2022-11-20 11:30:53,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:53,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690016558] [2022-11-20 11:30:53,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690016558] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:53,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:30:53,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-20 11:30:53,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37431711] [2022-11-20 11:30:53,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:53,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:30:53,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:53,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:30:53,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:30:53,095 INFO L87 Difference]: Start difference. First operand 8976 states and 13599 transitions. Second operand has 19 states, 17 states have (on average 8.176470588235293) internal successors, (139), 19 states have internal predecessors, (139), 4 states have call successors, (65), 2 states have call predecessors, (65), 5 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2022-11-20 11:30:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:57,956 INFO L93 Difference]: Finished difference Result 17929 states and 27289 transitions. [2022-11-20 11:30:57,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:30:57,958 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 8.176470588235293) internal successors, (139), 19 states have internal predecessors, (139), 4 states have call successors, (65), 2 states have call predecessors, (65), 5 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) Word has length 520 [2022-11-20 11:30:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:58,012 INFO L225 Difference]: With dead ends: 17929 [2022-11-20 11:30:58,013 INFO L226 Difference]: Without dead ends: 8980 [2022-11-20 11:30:58,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 1021 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:30:58,052 INFO L413 NwaCegarLoop]: 4059 mSDtfsCounter, 29 mSDsluCounter, 36378 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 40437 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:58,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 40437 Invalid, 500 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 11:30:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8980 states. [2022-11-20 11:30:58,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8980 to 8980. [2022-11-20 11:30:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8980 states, 5897 states have (on average 1.341190435814821) internal successors, (7909), 6129 states have internal predecessors, (7909), 2585 states have call successors, (2585), 492 states have call predecessors, (2585), 497 states have return successors, (3109), 2560 states have call predecessors, (3109), 2583 states have call successors, (3109) [2022-11-20 11:30:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8980 states to 8980 states and 13603 transitions. [2022-11-20 11:30:58,794 INFO L78 Accepts]: Start accepts. Automaton has 8980 states and 13603 transitions. Word has length 520 [2022-11-20 11:30:58,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:58,796 INFO L495 AbstractCegarLoop]: Abstraction has 8980 states and 13603 transitions. [2022-11-20 11:30:58,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 8.176470588235293) internal successors, (139), 19 states have internal predecessors, (139), 4 states have call successors, (65), 2 states have call predecessors, (65), 5 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2022-11-20 11:30:58,796 INFO L276 IsEmpty]: Start isEmpty. Operand 8980 states and 13603 transitions. [2022-11-20 11:30:58,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2022-11-20 11:30:58,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:58,802 INFO L195 NwaCegarLoop]: trace histogram [56, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-20 11:30:58,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:59,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:59,015 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:30:59,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:59,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2885877, now seen corresponding path program 2 times [2022-11-20 11:30:59,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:59,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366756129] [2022-11-20 11:30:59,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:30:59,020 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 11:30:59,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:59,022 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:30:59,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:31:04,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:31:04,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:31:04,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 2142 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:31:04,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:31:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4558 trivial. 0 not checked. [2022-11-20 11:31:04,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:31:04,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:31:04,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366756129] [2022-11-20 11:31:04,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366756129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:04,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:04,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:31:04,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808985171] [2022-11-20 11:31:04,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:04,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:31:04,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:31:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:31:04,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:31:04,674 INFO L87 Difference]: Start difference. First operand 8980 states and 13603 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 11:31:06,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:31:06,021 INFO L93 Difference]: Finished difference Result 26740 states and 40517 transitions. [2022-11-20 11:31:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:31:06,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 526 [2022-11-20 11:31:06,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:31:06,132 INFO L225 Difference]: With dead ends: 26740 [2022-11-20 11:31:06,133 INFO L226 Difference]: Without dead ends: 17829 [2022-11-20 11:31:06,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 524 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 11:31:06,180 INFO L413 NwaCegarLoop]: 7901 mSDtfsCounter, 4043 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4043 SdHoareTripleChecker+Valid, 11874 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:31:06,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4043 Valid, 11874 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:31:06,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17829 states. [2022-11-20 11:31:07,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17829 to 17810. [2022-11-20 11:31:07,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17810 states, 11703 states have (on average 1.3421344954285226) internal successors, (15707), 12167 states have internal predecessors, (15707), 5117 states have call successors, (5117), 978 states have call predecessors, (5117), 989 states have return successors, (6159), 5068 states have call predecessors, (6159), 5115 states have call successors, (6159) [2022-11-20 11:31:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17810 states to 17810 states and 26983 transitions. [2022-11-20 11:31:07,870 INFO L78 Accepts]: Start accepts. Automaton has 17810 states and 26983 transitions. Word has length 526 [2022-11-20 11:31:07,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:31:07,872 INFO L495 AbstractCegarLoop]: Abstraction has 17810 states and 26983 transitions. [2022-11-20 11:31:07,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 11:31:07,872 INFO L276 IsEmpty]: Start isEmpty. Operand 17810 states and 26983 transitions. [2022-11-20 11:31:07,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2022-11-20 11:31:07,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:31:07,879 INFO L195 NwaCegarLoop]: trace histogram [56, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-20 11:31:07,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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)] Ended with exit code 0 [2022-11-20 11:31:08,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:31:08,103 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:31:08,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:08,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2078529930, now seen corresponding path program 1 times [2022-11-20 11:31:08,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:31:08,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617239169] [2022-11-20 11:31:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:08,107 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 11:31:08,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:31:08,108 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:31:08,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:31:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:16,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 4000 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:31:16,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:31:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4803 backedges. 738 proven. 21 refuted. 0 times theorem prover too weak. 4044 trivial. 0 not checked. [2022-11-20 11:31:17,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:31:20,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4803 backedges. 0 proven. 501 refuted. 0 times theorem prover too weak. 4302 trivial. 0 not checked. [2022-11-20 11:31:20,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:31:20,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617239169] [2022-11-20 11:31:20,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617239169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:31:20,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:31:20,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-11-20 11:31:20,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465436659] [2022-11-20 11:31:20,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:31:20,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:31:20,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:31:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:31:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:31:20,926 INFO L87 Difference]: Start difference. First operand 17810 states and 26983 transitions. Second operand has 21 states, 19 states have (on average 8.631578947368421) internal successors, (164), 21 states have internal predecessors, (164), 4 states have call successors, (69), 2 states have call predecessors, (69), 5 states have return successors, (63), 4 states have call predecessors, (63), 4 states have call successors, (63) [2022-11-20 11:31:27,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:31:27,359 INFO L93 Difference]: Finished difference Result 35663 states and 54265 transitions. [2022-11-20 11:31:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:31:27,360 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 8.631578947368421) internal successors, (164), 21 states have internal predecessors, (164), 4 states have call successors, (69), 2 states have call predecessors, (69), 5 states have return successors, (63), 4 states have call predecessors, (63), 4 states have call successors, (63) Word has length 561 [2022-11-20 11:31:27,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:31:27,446 INFO L225 Difference]: With dead ends: 35663 [2022-11-20 11:31:27,446 INFO L226 Difference]: Without dead ends: 17898 [2022-11-20 11:31:27,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1128 GetRequests, 1101 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:31:27,521 INFO L413 NwaCegarLoop]: 4058 mSDtfsCounter, 30 mSDsluCounter, 44444 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 48502 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:31:27,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 48502 Invalid, 660 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 11:31:27,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17898 states. [2022-11-20 11:31:29,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17898 to 17898. [2022-11-20 11:31:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17898 states, 11783 states have (on average 1.3411694814563353) internal successors, (15803), 12247 states have internal predecessors, (15803), 5117 states have call successors, (5117), 986 states have call predecessors, (5117), 997 states have return successors, (6159), 5068 states have call predecessors, (6159), 5115 states have call successors, (6159) [2022-11-20 11:31:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17898 states to 17898 states and 27079 transitions. [2022-11-20 11:31:29,110 INFO L78 Accepts]: Start accepts. Automaton has 17898 states and 27079 transitions. Word has length 561 [2022-11-20 11:31:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:31:29,111 INFO L495 AbstractCegarLoop]: Abstraction has 17898 states and 27079 transitions. [2022-11-20 11:31:29,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 8.631578947368421) internal successors, (164), 21 states have internal predecessors, (164), 4 states have call successors, (69), 2 states have call predecessors, (69), 5 states have return successors, (63), 4 states have call predecessors, (63), 4 states have call successors, (63) [2022-11-20 11:31:29,111 INFO L276 IsEmpty]: Start isEmpty. Operand 17898 states and 27079 transitions. [2022-11-20 11:31:29,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2022-11-20 11:31:29,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:31:29,120 INFO L195 NwaCegarLoop]: trace histogram [62, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-20 11:31:29,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:31:29,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:31:29,335 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:31:29,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:29,336 INFO L85 PathProgramCache]: Analyzing trace with hash 213068370, now seen corresponding path program 2 times [2022-11-20 11:31:29,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:31:29,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541033365] [2022-11-20 11:31:29,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:31:29,467 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 11:31:29,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:31:29,482 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:31:29,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:31:33,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:31:33,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:31:34,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:31:34,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:31:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5220 trivial. 0 not checked. [2022-11-20 11:31:34,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:31:34,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:31:34,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541033365] [2022-11-20 11:31:34,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541033365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:34,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:34,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:31:34,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631533333] [2022-11-20 11:31:34,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:34,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:31:34,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:31:34,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:31:34,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:31:34,799 INFO L87 Difference]: Start difference. First operand 17898 states and 27079 transitions. Second operand has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 4 states have call successors, (46), 5 states have call predecessors, (46), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 11:31:37,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:31:37,098 INFO L93 Difference]: Finished difference Result 35941 states and 56479 transitions. [2022-11-20 11:31:37,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:31:37,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 4 states have call successors, (46), 5 states have call predecessors, (46), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 567 [2022-11-20 11:31:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:31:37,189 INFO L225 Difference]: With dead ends: 35941 [2022-11-20 11:31:37,189 INFO L226 Difference]: Without dead ends: 18122 [2022-11-20 11:31:37,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:31:37,295 INFO L413 NwaCegarLoop]: 4067 mSDtfsCounter, 28 mSDsluCounter, 20279 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 24346 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:31:37,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 24346 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 11:31:37,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18122 states. [2022-11-20 11:31:39,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18122 to 18122. [2022-11-20 11:31:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18122 states, 11931 states have (on average 1.3386136954153047) internal successors, (15971), 12407 states have internal predecessors, (15971), 5165 states have call successors, (5165), 1010 states have call predecessors, (5165), 1025 states have return successors, (6187), 5112 states have call predecessors, (6187), 5163 states have call successors, (6187) [2022-11-20 11:31:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18122 states to 18122 states and 27323 transitions. [2022-11-20 11:31:39,233 INFO L78 Accepts]: Start accepts. Automaton has 18122 states and 27323 transitions. Word has length 567 [2022-11-20 11:31:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:31:39,234 INFO L495 AbstractCegarLoop]: Abstraction has 18122 states and 27323 transitions. [2022-11-20 11:31:39,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 4 states have call successors, (46), 5 states have call predecessors, (46), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 11:31:39,234 INFO L276 IsEmpty]: Start isEmpty. Operand 18122 states and 27323 transitions. [2022-11-20 11:31:39,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2022-11-20 11:31:39,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:31:39,246 INFO L195 NwaCegarLoop]: trace histogram [62, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 3, 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] [2022-11-20 11:31:39,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:31:39,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:31:39,471 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:31:39,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:39,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1696977423, now seen corresponding path program 1 times [2022-11-20 11:31:39,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:31:39,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151677581] [2022-11-20 11:31:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:39,477 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 11:31:39,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:31:39,478 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:31:39,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:31:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:48,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 4557 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:31:48,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:31:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5745 backedges. 1314 proven. 28 refuted. 0 times theorem prover too weak. 4403 trivial. 0 not checked. [2022-11-20 11:31:49,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:31:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5745 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 5137 trivial. 0 not checked. [2022-11-20 11:31:54,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:31:54,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151677581] [2022-11-20 11:31:54,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151677581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:31:54,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:31:54,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-11-20 11:31:54,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365621817] [2022-11-20 11:31:54,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:31:54,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:31:54,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:31:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:31:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:31:54,181 INFO L87 Difference]: Start difference. First operand 18122 states and 27323 transitions. Second operand has 23 states, 21 states have (on average 12.714285714285714) internal successors, (267), 23 states have internal predecessors, (267), 4 states have call successors, (97), 2 states have call predecessors, (97), 5 states have return successors, (91), 4 states have call predecessors, (91), 4 states have call successors, (91) [2022-11-20 11:32:02,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:32:02,000 INFO L93 Difference]: Finished difference Result 36223 states and 54857 transitions. [2022-11-20 11:32:02,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:32:02,001 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 12.714285714285714) internal successors, (267), 23 states have internal predecessors, (267), 4 states have call successors, (97), 2 states have call predecessors, (97), 5 states have return successors, (91), 4 states have call predecessors, (91), 4 states have call successors, (91) Word has length 674 [2022-11-20 11:32:02,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:32:02,074 INFO L225 Difference]: With dead ends: 36223 [2022-11-20 11:32:02,075 INFO L226 Difference]: Without dead ends: 18130 [2022-11-20 11:32:02,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1355 GetRequests, 1325 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:32:02,139 INFO L413 NwaCegarLoop]: 4059 mSDtfsCounter, 45 mSDsluCounter, 52541 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 56600 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:32:02,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 56600 Invalid, 774 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-20 11:32:02,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18130 states. [2022-11-20 11:32:03,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18130 to 18130. [2022-11-20 11:32:03,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18130 states, 11939 states have (on average 1.3383867995644527) internal successors, (15979), 12415 states have internal predecessors, (15979), 5165 states have call successors, (5165), 1010 states have call predecessors, (5165), 1025 states have return successors, (6187), 5112 states have call predecessors, (6187), 5163 states have call successors, (6187) [2022-11-20 11:32:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18130 states to 18130 states and 27331 transitions. [2022-11-20 11:32:03,815 INFO L78 Accepts]: Start accepts. Automaton has 18130 states and 27331 transitions. Word has length 674 [2022-11-20 11:32:03,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:32:03,817 INFO L495 AbstractCegarLoop]: Abstraction has 18130 states and 27331 transitions. [2022-11-20 11:32:03,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 12.714285714285714) internal successors, (267), 23 states have internal predecessors, (267), 4 states have call successors, (97), 2 states have call predecessors, (97), 5 states have return successors, (91), 4 states have call predecessors, (91), 4 states have call successors, (91) [2022-11-20 11:32:03,817 INFO L276 IsEmpty]: Start isEmpty. Operand 18130 states and 27331 transitions. [2022-11-20 11:32:03,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2022-11-20 11:32:03,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:32:03,830 INFO L195 NwaCegarLoop]: trace histogram [68, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 3, 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] [2022-11-20 11:32:03,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:32:04,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:32:04,031 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:32:04,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:04,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1803102349, now seen corresponding path program 2 times [2022-11-20 11:32:04,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:32:04,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413458136] [2022-11-20 11:32:04,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:32:04,038 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 11:32:04,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:32:04,039 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:32:04,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:33:07,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:33:07,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:33:08,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 4623 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:33:08,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:33:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6198 backedges. 723 proven. 0 refuted. 0 times theorem prover too weak. 5475 trivial. 0 not checked. [2022-11-20 11:33:08,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:33:08,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:33:08,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413458136] [2022-11-20 11:33:08,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413458136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:08,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:08,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:33:08,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931112323] [2022-11-20 11:33:08,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:08,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:33:08,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:33:08,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:33:08,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:33:08,252 INFO L87 Difference]: Start difference. First operand 18130 states and 27331 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-20 11:33:09,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:33:12,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:33:12,317 INFO L93 Difference]: Finished difference Result 54243 states and 81794 transitions. [2022-11-20 11:33:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:33:12,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 680 [2022-11-20 11:33:12,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:33:12,480 INFO L225 Difference]: With dead ends: 54243 [2022-11-20 11:33:12,480 INFO L226 Difference]: Without dead ends: 36132 [2022-11-20 11:33:12,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 676 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:33:12,723 INFO L413 NwaCegarLoop]: 8039 mSDtfsCounter, 3986 mSDsluCounter, 20123 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3988 SdHoareTripleChecker+Valid, 28162 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:33:12,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3988 Valid, 28162 Invalid, 50 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:33:12,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36132 states. [2022-11-20 11:33:15,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36132 to 35953. [2022-11-20 11:33:15,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35953 states, 23678 states have (on average 1.3392178393445393) internal successors, (31710), 24606 states have internal predecessors, (31710), 10253 states have call successors, (10253), 1990 states have call predecessors, (10253), 2021 states have return successors, (12299), 10141 states have call predecessors, (12299), 10251 states have call successors, (12299) [2022-11-20 11:33:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35953 states to 35953 states and 54262 transitions. [2022-11-20 11:33:15,433 INFO L78 Accepts]: Start accepts. Automaton has 35953 states and 54262 transitions. Word has length 680 [2022-11-20 11:33:15,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:33:15,434 INFO L495 AbstractCegarLoop]: Abstraction has 35953 states and 54262 transitions. [2022-11-20 11:33:15,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-20 11:33:15,434 INFO L276 IsEmpty]: Start isEmpty. Operand 35953 states and 54262 transitions. [2022-11-20 11:33:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2022-11-20 11:33:15,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:33:15,447 INFO L195 NwaCegarLoop]: trace histogram [68, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:33:15,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:33:15,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:33:15,663 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:33:15,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:15,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1940347101, now seen corresponding path program 1 times [2022-11-20 11:33:15,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:33:15,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053194283] [2022-11-20 11:33:15,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:15,668 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 11:33:15,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:33:15,670 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:33:15,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:33:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:34,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 4714 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:33:34,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:33:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6210 backedges. 518 proven. 0 refuted. 0 times theorem prover too weak. 5692 trivial. 0 not checked. [2022-11-20 11:33:35,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:33:35,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:33:35,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053194283] [2022-11-20 11:33:35,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053194283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:35,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:35,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:33:35,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123058390] [2022-11-20 11:33:35,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:35,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:33:35,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:33:35,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:33:35,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:33:35,448 INFO L87 Difference]: Start difference. First operand 35953 states and 54262 transitions. Second operand has 10 states, 10 states have (on average 18.7) internal successors, (187), 7 states have internal predecessors, (187), 2 states have call successors, (65), 2 states have call predecessors, (65), 5 states have return successors, (58), 5 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-20 11:33:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:33:39,528 INFO L93 Difference]: Finished difference Result 72035 states and 113057 transitions. [2022-11-20 11:33:39,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:33:39,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.7) internal successors, (187), 7 states have internal predecessors, (187), 2 states have call successors, (65), 2 states have call predecessors, (65), 5 states have return successors, (58), 5 states have call predecessors, (58), 2 states have call successors, (58) Word has length 702 [2022-11-20 11:33:39,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:33:39,884 INFO L225 Difference]: With dead ends: 72035 [2022-11-20 11:33:39,884 INFO L226 Difference]: Without dead ends: 36161 [2022-11-20 11:33:40,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:33:40,029 INFO L413 NwaCegarLoop]: 4091 mSDtfsCounter, 4 mSDsluCounter, 32667 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 36758 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:33:40,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 36758 Invalid, 104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 11:33:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36161 states. [2022-11-20 11:33:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36161 to 36161. [2022-11-20 11:33:43,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36161 states, 23822 states have (on average 1.3371673243220552) internal successors, (31854), 24766 states have internal predecessors, (31854), 10253 states have call successors, (10253), 1990 states have call predecessors, (10253), 2085 states have return successors, (12739), 10189 states have call predecessors, (12739), 10251 states have call successors, (12739) [2022-11-20 11:33:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36161 states to 36161 states and 54846 transitions. [2022-11-20 11:33:43,746 INFO L78 Accepts]: Start accepts. Automaton has 36161 states and 54846 transitions. Word has length 702 [2022-11-20 11:33:43,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:33:43,747 INFO L495 AbstractCegarLoop]: Abstraction has 36161 states and 54846 transitions. [2022-11-20 11:33:43,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.7) internal successors, (187), 7 states have internal predecessors, (187), 2 states have call successors, (65), 2 states have call predecessors, (65), 5 states have return successors, (58), 5 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-20 11:33:43,747 INFO L276 IsEmpty]: Start isEmpty. Operand 36161 states and 54846 transitions. [2022-11-20 11:33:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2022-11-20 11:33:43,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:33:43,772 INFO L195 NwaCegarLoop]: trace histogram [68, 22, 22, 22, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:33:43,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:33:43,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:33:43,972 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:33:43,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:43,973 INFO L85 PathProgramCache]: Analyzing trace with hash -350040962, now seen corresponding path program 1 times [2022-11-20 11:33:43,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:33:43,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643339298] [2022-11-20 11:33:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:43,981 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 11:33:43,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:33:43,983 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:33:44,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:34:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:03,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 4757 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:34:03,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:04,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6390 backedges. 540 proven. 0 refuted. 0 times theorem prover too weak. 5850 trivial. 0 not checked. [2022-11-20 11:34:04,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:34:04,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:34:04,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643339298] [2022-11-20 11:34:04,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643339298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:04,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:04,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:34:04,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111055789] [2022-11-20 11:34:04,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:04,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:34:04,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:34:04,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:34:04,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:34:04,863 INFO L87 Difference]: Start difference. First operand 36161 states and 54846 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 3 states have call successors, (68), 3 states have call predecessors, (68), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-20 11:34:06,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:34:10,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:34:10,501 INFO L93 Difference]: Finished difference Result 92993 states and 142706 transitions. [2022-11-20 11:34:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:34:10,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 3 states have call successors, (68), 3 states have call predecessors, (68), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 722 [2022-11-20 11:34:10,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:34:10,972 INFO L225 Difference]: With dead ends: 92993 [2022-11-20 11:34:10,972 INFO L226 Difference]: Without dead ends: 56911 [2022-11-20 11:34:11,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 720 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 11:34:11,103 INFO L413 NwaCegarLoop]: 6394 mSDtfsCounter, 3951 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3951 SdHoareTripleChecker+Valid, 10517 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:34:11,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3951 Valid, 10517 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 11:34:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56911 states. [2022-11-20 11:34:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56911 to 55873. [2022-11-20 11:34:16,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55873 states, 36720 states have (on average 1.3491285403050108) internal successors, (49540), 38520 states have internal predecessors, (49540), 16065 states have call successors, (16065), 2992 states have call predecessors, (16065), 3087 states have return successors, (21123), 15569 states have call predecessors, (21123), 16063 states have call successors, (21123) [2022-11-20 11:34:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55873 states to 55873 states and 86728 transitions. [2022-11-20 11:34:16,480 INFO L78 Accepts]: Start accepts. Automaton has 55873 states and 86728 transitions. Word has length 722 [2022-11-20 11:34:16,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:34:16,481 INFO L495 AbstractCegarLoop]: Abstraction has 55873 states and 86728 transitions. [2022-11-20 11:34:16,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 3 states have call successors, (68), 3 states have call predecessors, (68), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-20 11:34:16,481 INFO L276 IsEmpty]: Start isEmpty. Operand 55873 states and 86728 transitions. [2022-11-20 11:34:16,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2022-11-20 11:34:16,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:34:16,496 INFO L195 NwaCegarLoop]: trace histogram [68, 22, 22, 22, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-11-20 11:34:16,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:34:16,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:34:16,723 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:34:16,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:16,724 INFO L85 PathProgramCache]: Analyzing trace with hash 447881106, now seen corresponding path program 1 times [2022-11-20 11:34:16,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:34:16,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205960357] [2022-11-20 11:34:16,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:16,729 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 11:34:16,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:34:16,731 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:34:16,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5b6bad-12df-434d-9e28-00ad107f9ca7/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 11:34:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:36,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 4700 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:34:36,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6404 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6390 trivial. 0 not checked. [2022-11-20 11:34:36,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:34:36,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:34:36,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205960357] [2022-11-20 11:34:36,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205960357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:36,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:36,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:34:36,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794441604] [2022-11-20 11:34:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:36,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:34:36,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:34:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:34:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:34:36,841 INFO L87 Difference]: Start difference. First operand 55873 states and 86728 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61)