./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db1e722f73dbd7795cdbaca4c816f6c8a0f90138145d9f90bf0f222b7dd371eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:03:48,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:03:48,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:03:48,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:03:48,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:03:48,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:03:48,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:03:48,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:03:48,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:03:48,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:03:48,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:03:48,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:03:48,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:03:48,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:03:48,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:03:48,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:03:48,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:03:48,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:03:48,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:03:48,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:03:48,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:03:48,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:03:48,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:03:48,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:03:48,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:03:48,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:03:48,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:03:48,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:03:48,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:03:48,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:03:48,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:03:48,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:03:48,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:03:48,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:03:48,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:03:48,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:03:48,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:03:48,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:03:48,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:03:48,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:03:48,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:03:48,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:03:48,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:03:48,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:03:48,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:03:48,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:03:48,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:03:48,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:03:48,721 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:03:48,721 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:03:48,722 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:03:48,722 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:03:48,723 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:03:48,723 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:03:48,724 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:03:48,724 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:03:48,724 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:03:48,725 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:03:48,725 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:03:48,725 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:03:48,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:03:48,726 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:03:48,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:03:48,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:03:48,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:03:48,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:03:48,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:03:48,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:03:48,728 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:03:48,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:03:48,729 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:03:48,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:03:48,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:03:48,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:03:48,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:03:48,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:03:48,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:03:48,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:03:48,732 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:03:48,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:03:48,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:03:48,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:03:48,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:03:48,733 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db1e722f73dbd7795cdbaca4c816f6c8a0f90138145d9f90bf0f222b7dd371eb [2021-11-23 03:03:49,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:03:49,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:03:49,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:03:49,114 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:03:49,115 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:03:49,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2021-11-23 03:03:49,213 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/data/3cb9dc27a/04311261cf604566a13be653a85e675a/FLAG75269b49b [2021-11-23 03:03:49,611 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.parser.UltimateCdtExternalSettingsProvider.getSettings(UltimateCdtExternalSettingsProvider.java:67) at org.eclipse.cdt.core.settings.model.extension.CExternalSettingProvider.getSettings(CExternalSettingProvider.java:48) at org.eclipse.cdt.internal.core.settings.model.ExtensionContainerFactory$CExtensionSettingProviderDescriptor.getContainer(ExtensionContainerFactory.java:110) at org.eclipse.cdt.internal.core.settings.model.ExtensionContainerFactory.createContainer(ExtensionContainerFactory.java:186) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager$ContainerDescriptor.(CExternalSettingsManager.java:147) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager.checkExternalSettingsChange(CExternalSettingsManager.java:683) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager.processContainerChange(CExternalSettingsManager.java:501) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager$2.run(CExternalSettingsManager.java:615) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager$5.run(CProjectDescriptionManager.java:508) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2292) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager.runAtomic(CProjectDescriptionManager.java:504) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager$4.run(CProjectDescriptionManager.java:484) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 03:03:49,829 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:03:49,830 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2021-11-23 03:03:49,845 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/data/3cb9dc27a/04311261cf604566a13be653a85e675a/FLAG75269b49b [2021-11-23 03:03:50,165 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/data/3cb9dc27a/04311261cf604566a13be653a85e675a [2021-11-23 03:03:50,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:03:50,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:03:50,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:03:50,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:03:50,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:03:50,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:03:50" (1/1) ... [2021-11-23 03:03:50,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d17013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50, skipping insertion in model container [2021-11-23 03:03:50,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:03:50" (1/1) ... [2021-11-23 03:03:50,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:03:50,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:03:50,543 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c[17080,17093] [2021-11-23 03:03:50,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:03:50,557 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:03:50,616 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c[17080,17093] [2021-11-23 03:03:50,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:03:50,634 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:03:50,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50 WrapperNode [2021-11-23 03:03:50,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:03:50,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:03:50,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:03:50,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:03:50,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2021-11-23 03:03:50,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2021-11-23 03:03:50,734 INFO L137 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 423 [2021-11-23 03:03:50,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:03:50,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:03:50,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:03:50,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:03:50,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2021-11-23 03:03:50,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2021-11-23 03:03:50,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2021-11-23 03:03:50,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2021-11-23 03:03:50,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2021-11-23 03:03:50,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2021-11-23 03:03:50,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2021-11-23 03:03:50,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:03:50,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:03:50,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:03:50,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:03:50,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2021-11-23 03:03:50,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:03:50,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:03:50,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:03:50,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:03:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:03:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-11-23 03:03:50,950 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-11-23 03:03:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:03:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-11-23 03:03:50,951 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-11-23 03:03:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:03:50,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:03:51,111 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:03:51,113 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:03:51,181 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:03:51,191 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:03:51,197 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:03:51,593 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##82: assume !false; [2021-11-23 03:03:51,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##81: assume false; [2021-11-23 03:03:51,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !false; [2021-11-23 03:03:51,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume false; [2021-11-23 03:03:51,596 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2021-11-23 03:03:51,597 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2021-11-23 03:03:51,601 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:03:51,674 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-11-23 03:03:51,674 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-11-23 03:03:51,677 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:03:51,815 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:03:51,816 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:03:51,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:03:51 BoogieIcfgContainer [2021-11-23 03:03:51,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:03:51,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:03:51,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:03:51,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:03:51,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:03:50" (1/3) ... [2021-11-23 03:03:51,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c9ef21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:03:51, skipping insertion in model container [2021-11-23 03:03:51,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (2/3) ... [2021-11-23 03:03:51,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c9ef21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:03:51, skipping insertion in model container [2021-11-23 03:03:51,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:03:51" (3/3) ... [2021-11-23 03:03:51,829 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.c [2021-11-23 03:03:51,835 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:03:51,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:03:51,897 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:03:51,903 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:03:51,904 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:03:51,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 64 states have internal predecessors, (87), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 03:03:51,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:03:51,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:51,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:51,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:51,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:51,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1009964955, now seen corresponding path program 1 times [2021-11-23 03:03:51,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:51,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183343015] [2021-11-23 03:03:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:51,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:52,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:52,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183343015] [2021-11-23 03:03:52,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183343015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:52,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:52,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:03:52,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014450061] [2021-11-23 03:03:52,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:52,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:03:52,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:52,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:03:52,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:52,238 INFO L87 Difference]: Start difference. First operand has 71 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 64 states have internal predecessors, (87), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:52,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:52,451 INFO L93 Difference]: Finished difference Result 137 states and 217 transitions. [2021-11-23 03:03:52,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:03:52,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 03:03:52,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:52,470 INFO L225 Difference]: With dead ends: 137 [2021-11-23 03:03:52,470 INFO L226 Difference]: Without dead ends: 73 [2021-11-23 03:03:52,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:52,484 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 22 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:52,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 115 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:03:52,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-23 03:03:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-11-23 03:03:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 63 states have internal predecessors, (80), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:03:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2021-11-23 03:03:52,569 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 8 [2021-11-23 03:03:52,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:52,571 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2021-11-23 03:03:52,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:52,574 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2021-11-23 03:03:52,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 03:03:52,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:52,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:52,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:03:52,578 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:52,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:52,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1243980093, now seen corresponding path program 1 times [2021-11-23 03:03:52,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:52,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77394934] [2021-11-23 03:03:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:52,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:52,708 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:52,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77394934] [2021-11-23 03:03:52,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77394934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:52,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:52,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:03:52,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911974827] [2021-11-23 03:03:52,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:52,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:03:52,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:52,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:03:52,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:52,719 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:52,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:52,824 INFO L93 Difference]: Finished difference Result 134 states and 177 transitions. [2021-11-23 03:03:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:03:52,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 03:03:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:52,828 INFO L225 Difference]: With dead ends: 134 [2021-11-23 03:03:52,830 INFO L226 Difference]: Without dead ends: 105 [2021-11-23 03:03:52,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:52,838 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 69 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:52,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 110 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:03:52,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-23 03:03:52,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 74. [2021-11-23 03:03:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 66 states have internal predecessors, (84), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 03:03:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2021-11-23 03:03:52,870 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 9 [2021-11-23 03:03:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:52,872 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2021-11-23 03:03:52,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:52,872 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2021-11-23 03:03:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:03:52,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:52,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:52,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:03:52,874 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:52,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1242547785, now seen corresponding path program 1 times [2021-11-23 03:03:52,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:52,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732625279] [2021-11-23 03:03:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:52,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:52,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:52,954 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:52,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732625279] [2021-11-23 03:03:52,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732625279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:52,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:52,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:03:52,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085666636] [2021-11-23 03:03:52,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:52,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:03:52,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:52,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:03:52,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:52,959 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:53,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:53,021 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2021-11-23 03:03:53,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:03:53,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 03:03:53,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:53,029 INFO L225 Difference]: With dead ends: 88 [2021-11-23 03:03:53,029 INFO L226 Difference]: Without dead ends: 74 [2021-11-23 03:03:53,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:53,037 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 37 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:53,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 97 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:03:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-23 03:03:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-23 03:03:53,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 66 states have internal predecessors, (83), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 03:03:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 96 transitions. [2021-11-23 03:03:53,066 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 96 transitions. Word has length 11 [2021-11-23 03:03:53,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:53,066 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 96 transitions. [2021-11-23 03:03:53,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 96 transitions. [2021-11-23 03:03:53,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:03:53,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:53,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:53,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:03:53,070 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:53,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash 206226151, now seen corresponding path program 1 times [2021-11-23 03:03:53,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:53,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711933116] [2021-11-23 03:03:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:53,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:53,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:53,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711933116] [2021-11-23 03:03:53,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711933116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:53,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:53,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:03:53,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226494614] [2021-11-23 03:03:53,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:53,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:03:53,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:53,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:03:53,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:03:53,279 INFO L87 Difference]: Start difference. First operand 74 states and 96 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:53,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:53,402 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2021-11-23 03:03:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:03:53,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-23 03:03:53,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:53,405 INFO L225 Difference]: With dead ends: 77 [2021-11-23 03:03:53,405 INFO L226 Difference]: Without dead ends: 74 [2021-11-23 03:03:53,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:03:53,407 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 76 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:53,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 80 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:03:53,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-23 03:03:53,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-23 03:03:53,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 66 states have internal predecessors, (82), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 03:03:53,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 95 transitions. [2021-11-23 03:03:53,418 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 95 transitions. Word has length 17 [2021-11-23 03:03:53,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:53,419 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 95 transitions. [2021-11-23 03:03:53,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:53,420 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 95 transitions. [2021-11-23 03:03:53,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 03:03:53,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:53,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:53,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:03:53,422 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:53,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:53,423 INFO L85 PathProgramCache]: Analyzing trace with hash -446902878, now seen corresponding path program 1 times [2021-11-23 03:03:53,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:53,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400757652] [2021-11-23 03:03:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:53,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:53,487 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:53,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400757652] [2021-11-23 03:03:53,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400757652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:53,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:53,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:03:53,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178031902] [2021-11-23 03:03:53,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:53,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:03:53,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:53,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:03:53,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:53,496 INFO L87 Difference]: Start difference. First operand 74 states and 95 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:53,582 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2021-11-23 03:03:53,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:03:53,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 03:03:53,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:53,590 INFO L225 Difference]: With dead ends: 106 [2021-11-23 03:03:53,590 INFO L226 Difference]: Without dead ends: 72 [2021-11-23 03:03:53,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:53,595 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:53,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:03:53,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-23 03:03:53,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-11-23 03:03:53,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 64 states have internal predecessors, (79), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 03:03:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2021-11-23 03:03:53,616 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 19 [2021-11-23 03:03:53,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:53,616 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2021-11-23 03:03:53,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:53,617 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2021-11-23 03:03:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 03:03:53,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:53,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:53,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:03:53,624 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:53,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:53,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1928858885, now seen corresponding path program 1 times [2021-11-23 03:03:53,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:53,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088067623] [2021-11-23 03:03:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:53,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:53,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:53,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088067623] [2021-11-23 03:03:53,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088067623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:53,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:53,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:03:53,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091373770] [2021-11-23 03:03:53,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:53,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:03:53,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:53,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:03:53,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:03:53,730 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:53,899 INFO L93 Difference]: Finished difference Result 119 states and 149 transitions. [2021-11-23 03:03:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:03:53,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-11-23 03:03:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:53,902 INFO L225 Difference]: With dead ends: 119 [2021-11-23 03:03:53,902 INFO L226 Difference]: Without dead ends: 85 [2021-11-23 03:03:53,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:03:53,906 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 188 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:53,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 212 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:03:53,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-23 03:03:53,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 70. [2021-11-23 03:03:53,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 62 states have internal predecessors, (76), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:03:53,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2021-11-23 03:03:53,936 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 21 [2021-11-23 03:03:53,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:53,936 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2021-11-23 03:03:53,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:53,937 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2021-11-23 03:03:53,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 03:03:53,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:53,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:53,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:03:53,941 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:53,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:53,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1636903991, now seen corresponding path program 1 times [2021-11-23 03:03:53,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:53,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968899288] [2021-11-23 03:03:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:53,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:54,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:54,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968899288] [2021-11-23 03:03:54,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968899288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:54,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:54,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:03:54,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830123330] [2021-11-23 03:03:54,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:54,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:03:54,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:54,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:03:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:03:54,063 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:54,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:54,238 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2021-11-23 03:03:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:03:54,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-11-23 03:03:54,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:54,240 INFO L225 Difference]: With dead ends: 114 [2021-11-23 03:03:54,240 INFO L226 Difference]: Without dead ends: 82 [2021-11-23 03:03:54,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:03:54,243 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 82 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:54,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 127 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:03:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-23 03:03:54,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2021-11-23 03:03:54,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 60 states have (on average 1.25) internal successors, (75), 62 states have internal predecessors, (75), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:03:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2021-11-23 03:03:54,265 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 23 [2021-11-23 03:03:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:54,266 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2021-11-23 03:03:54,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:54,267 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2021-11-23 03:03:54,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 03:03:54,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:54,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:54,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:03:54,269 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:54,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:54,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1661134061, now seen corresponding path program 1 times [2021-11-23 03:03:54,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:54,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962252898] [2021-11-23 03:03:54,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:54,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:54,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:54,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962252898] [2021-11-23 03:03:54,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962252898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:54,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:54,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:03:54,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654773149] [2021-11-23 03:03:54,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:54,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:03:54,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:54,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:03:54,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:03:54,456 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:54,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:54,712 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2021-11-23 03:03:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:03:54,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-23 03:03:54,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:54,714 INFO L225 Difference]: With dead ends: 77 [2021-11-23 03:03:54,715 INFO L226 Difference]: Without dead ends: 74 [2021-11-23 03:03:54,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:03:54,716 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 31 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:54,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 183 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:03:54,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-23 03:03:54,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2021-11-23 03:03:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 60 states have (on average 1.25) internal successors, (75), 62 states have internal predecessors, (75), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:03:54,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2021-11-23 03:03:54,731 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 24 [2021-11-23 03:03:54,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:54,731 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2021-11-23 03:03:54,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:54,732 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2021-11-23 03:03:54,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:03:54,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:54,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:54,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:03:54,734 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:54,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1420840684, now seen corresponding path program 1 times [2021-11-23 03:03:54,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:54,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49469388] [2021-11-23 03:03:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:54,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:54,788 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:54,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49469388] [2021-11-23 03:03:54,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49469388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:54,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:54,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:03:54,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438822092] [2021-11-23 03:03:54,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:54,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:03:54,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:54,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:03:54,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:54,792 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:54,860 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2021-11-23 03:03:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:03:54,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-11-23 03:03:54,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:54,862 INFO L225 Difference]: With dead ends: 85 [2021-11-23 03:03:54,863 INFO L226 Difference]: Without dead ends: 82 [2021-11-23 03:03:54,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:54,866 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 16 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:54,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 105 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:03:54,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-23 03:03:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 72. [2021-11-23 03:03:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 64 states have internal predecessors, (78), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:03:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2021-11-23 03:03:54,877 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 25 [2021-11-23 03:03:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:54,879 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2021-11-23 03:03:54,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2021-11-23 03:03:54,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:03:54,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:54,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:54,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:03:54,883 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:54,884 INFO L85 PathProgramCache]: Analyzing trace with hash -978574283, now seen corresponding path program 1 times [2021-11-23 03:03:54,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:54,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155018166] [2021-11-23 03:03:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:54,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:54,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:54,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155018166] [2021-11-23 03:03:54,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155018166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:54,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:54,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:03:54,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617136581] [2021-11-23 03:03:54,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:54,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:03:54,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:03:54,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:03:54,972 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:55,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:55,174 INFO L93 Difference]: Finished difference Result 104 states and 128 transitions. [2021-11-23 03:03:55,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:03:55,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-23 03:03:55,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:55,176 INFO L225 Difference]: With dead ends: 104 [2021-11-23 03:03:55,176 INFO L226 Difference]: Without dead ends: 84 [2021-11-23 03:03:55,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:03:55,178 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 93 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:55,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 150 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:03:55,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-23 03:03:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2021-11-23 03:03:55,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 64 states have internal predecessors, (77), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:03:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2021-11-23 03:03:55,202 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 26 [2021-11-23 03:03:55,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:55,202 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2021-11-23 03:03:55,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:55,203 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2021-11-23 03:03:55,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:03:55,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:55,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:55,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:03:55,204 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:55,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1334051139, now seen corresponding path program 1 times [2021-11-23 03:03:55,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:55,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939345424] [2021-11-23 03:03:55,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:55,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:55,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:55,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:55,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939345424] [2021-11-23 03:03:55,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939345424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:55,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:55,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:03:55,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751004387] [2021-11-23 03:03:55,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:55,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:03:55,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:55,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:03:55,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:55,240 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:55,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:55,284 INFO L93 Difference]: Finished difference Result 114 states and 137 transitions. [2021-11-23 03:03:55,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:03:55,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-23 03:03:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:55,287 INFO L225 Difference]: With dead ends: 114 [2021-11-23 03:03:55,287 INFO L226 Difference]: Without dead ends: 88 [2021-11-23 03:03:55,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:55,290 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 29 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:55,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 123 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:03:55,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-23 03:03:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 69. [2021-11-23 03:03:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.2) internal successors, (72), 61 states have internal predecessors, (72), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:03:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2021-11-23 03:03:55,302 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 26 [2021-11-23 03:03:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:55,302 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2021-11-23 03:03:55,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:55,303 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2021-11-23 03:03:55,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:03:55,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:55,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:55,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:03:55,304 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:55,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:55,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1016191363, now seen corresponding path program 1 times [2021-11-23 03:03:55,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:55,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644459414] [2021-11-23 03:03:55,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:55,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:55,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:55,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644459414] [2021-11-23 03:03:55,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644459414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:55,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:55,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:03:55,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492853911] [2021-11-23 03:03:55,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:55,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:03:55,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:55,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:03:55,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:03:55,385 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:55,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:55,457 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2021-11-23 03:03:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:03:55,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-11-23 03:03:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:55,458 INFO L225 Difference]: With dead ends: 78 [2021-11-23 03:03:55,458 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 03:03:55,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:03:55,460 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 124 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:55,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 73 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:03:55,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 03:03:55,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-23 03:03:55,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.0) internal successors, (25), 25 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2021-11-23 03:03:55,466 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 27 [2021-11-23 03:03:55,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:55,466 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2021-11-23 03:03:55,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:55,467 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2021-11-23 03:03:55,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 03:03:55,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:55,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:55,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:03:55,470 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:55,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:55,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1183824323, now seen corresponding path program 1 times [2021-11-23 03:03:55,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:55,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840402538] [2021-11-23 03:03:55,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:55,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:55,515 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:55,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840402538] [2021-11-23 03:03:55,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840402538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:55,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:55,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:03:55,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219120098] [2021-11-23 03:03:55,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:55,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:03:55,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:55,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:03:55,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:03:55,518 INFO L87 Difference]: Start difference. First operand 29 states and 28 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:55,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:55,548 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2021-11-23 03:03:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:03:55,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-11-23 03:03:55,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:55,549 INFO L225 Difference]: With dead ends: 29 [2021-11-23 03:03:55,549 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:03:55,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:03:55,550 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:55,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 13 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:03:55,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:03:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:03:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:03:55,552 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-11-23 03:03:55,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:55,552 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:03:55,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:03:55,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:03:55,553 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:03:55,556 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:03:55,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 03:03:55,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 03:03:56,691 INFO L861 garLoopResultBuilder]: At program point errorFnENTRY(lines 577 584) the Hoare annotation is: true [2021-11-23 03:03:56,691 INFO L858 garLoopResultBuilder]: For program point errorFnEXIT(lines 577 584) no Hoare annotation was computed. [2021-11-23 03:03:56,691 INFO L858 garLoopResultBuilder]: For program point errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION(line 581) no Hoare annotation was computed. [2021-11-23 03:03:56,691 INFO L854 garLoopResultBuilder]: At program point L102(lines 102 284) the Hoare annotation is: (and (<= 5 ~MPR1~0) (= ~s~0 ~NP~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~compRegistered~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,692 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-11-23 03:03:56,692 INFO L854 garLoopResultBuilder]: At program point L251(line 251) the Hoare annotation is: false [2021-11-23 03:03:56,692 INFO L858 garLoopResultBuilder]: For program point L251-1(lines 247 253) no Hoare annotation was computed. [2021-11-23 03:03:56,692 INFO L854 garLoopResultBuilder]: At program point L400(line 400) the Hoare annotation is: false [2021-11-23 03:03:56,692 INFO L854 garLoopResultBuilder]: At program point L384(lines 377 417) the Hoare annotation is: (and (<= 5 ~MPR1~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,693 INFO L854 garLoopResultBuilder]: At program point L236(line 236) the Hoare annotation is: false [2021-11-23 03:03:56,693 INFO L858 garLoopResultBuilder]: For program point L236-1(lines 232 238) no Hoare annotation was computed. [2021-11-23 03:03:56,693 INFO L858 garLoopResultBuilder]: For program point L385(lines 369 418) no Hoare annotation was computed. [2021-11-23 03:03:56,693 INFO L854 garLoopResultBuilder]: At program point L352(lines 352 367) the Hoare annotation is: (and (<= 5 ~MPR1~0) (= ~s~0 ~NP~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~compRegistered~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,693 INFO L854 garLoopResultBuilder]: At program point L220(line 220) the Hoare annotation is: false [2021-11-23 03:03:56,693 INFO L854 garLoopResultBuilder]: At program point L187(lines 187 188) the Hoare annotation is: (and (<= 5 ~MPR1~0) (not (= ~compRegistered~0 0)) (= ~s~0 ~NP~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,694 INFO L858 garLoopResultBuilder]: For program point L220-1(lines 216 222) no Hoare annotation was computed. [2021-11-23 03:03:56,694 INFO L858 garLoopResultBuilder]: For program point L187-1(lines 187 188) no Hoare annotation was computed. [2021-11-23 03:03:56,694 INFO L858 garLoopResultBuilder]: For program point L171(lines 171 183) no Hoare annotation was computed. [2021-11-23 03:03:56,694 INFO L854 garLoopResultBuilder]: At program point L105(lines 105 283) the Hoare annotation is: (and (<= 5 ~MPR1~0) (= ~s~0 ~NP~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~compRegistered~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,694 INFO L858 garLoopResultBuilder]: For program point L386(lines 386 415) no Hoare annotation was computed. [2021-11-23 03:03:56,694 INFO L858 garLoopResultBuilder]: For program point L370(lines 370 374) no Hoare annotation was computed. [2021-11-23 03:03:56,695 INFO L861 garLoopResultBuilder]: At program point L420(lines 288 422) the Hoare annotation is: true [2021-11-23 03:03:56,695 INFO L858 garLoopResultBuilder]: For program point L387(lines 387 414) no Hoare annotation was computed. [2021-11-23 03:03:56,695 INFO L854 garLoopResultBuilder]: At program point L536(lines 528 547) the Hoare annotation is: (and (= ~setEventCalled~0 1) (<= 5 ~MPR1~0) (not (= ~compRegistered~0 0)) (= ~s~0 ~NP~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (not (= ~MPR3~0 ~s~0)) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,695 INFO L854 garLoopResultBuilder]: At program point L173(line 173) the Hoare annotation is: false [2021-11-23 03:03:56,695 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 394) no Hoare annotation was computed. [2021-11-23 03:03:56,695 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 03:03:56,696 INFO L854 garLoopResultBuilder]: At program point L108(lines 108 282) the Hoare annotation is: (and (<= 5 ~MPR1~0) (= ~s~0 ~NP~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~compRegistered~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,696 INFO L858 garLoopResultBuilder]: For program point L389(lines 389 391) no Hoare annotation was computed. [2021-11-23 03:03:56,696 INFO L854 garLoopResultBuilder]: At program point L323(lines 323 368) the Hoare annotation is: (and (<= 5 ~MPR1~0) (not (= ~pended~0 1)) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= ~compRegistered~0 0) (not (= ~MPR3~0 ~s~0)) (not (= ~s~0 1)) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,696 INFO L854 garLoopResultBuilder]: At program point L323-1(lines 297 421) the Hoare annotation is: (and (<= 5 ~MPR1~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,696 INFO L854 garLoopResultBuilder]: At program point L257(lines 257 258) the Hoare annotation is: (and (= 3 ~s~0) (<= 5 ~MPR1~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~compRegistered~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,697 INFO L858 garLoopResultBuilder]: For program point L257-1(lines 257 258) no Hoare annotation was computed. [2021-11-23 03:03:56,697 INFO L858 garLoopResultBuilder]: For program point L505(lines 505 511) no Hoare annotation was computed. [2021-11-23 03:03:56,697 INFO L858 garLoopResultBuilder]: For program point L340-2(lines 339 349) no Hoare annotation was computed. [2021-11-23 03:03:56,697 INFO L858 garLoopResultBuilder]: For program point L192(lines 192 198) no Hoare annotation was computed. [2021-11-23 03:03:56,697 INFO L858 garLoopResultBuilder]: For program point L192-2(lines 166 261) no Hoare annotation was computed. [2021-11-23 03:03:56,697 INFO L854 garLoopResultBuilder]: At program point L242(line 242) the Hoare annotation is: (and (= 3 ~s~0) (<= 5 ~MPR1~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~compRegistered~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,697 INFO L858 garLoopResultBuilder]: For program point L242-1(line 242) no Hoare annotation was computed. [2021-11-23 03:03:56,698 INFO L858 garLoopResultBuilder]: For program point L176(lines 176 182) no Hoare annotation was computed. [2021-11-23 03:03:56,698 INFO L858 garLoopResultBuilder]: For program point L176-1(lines 171 183) no Hoare annotation was computed. [2021-11-23 03:03:56,698 INFO L854 garLoopResultBuilder]: At program point L226(lines 226 227) the Hoare annotation is: (and (= 3 ~s~0) (<= 5 ~MPR1~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~compRegistered~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,698 INFO L858 garLoopResultBuilder]: For program point L226-1(lines 226 227) no Hoare annotation was computed. [2021-11-23 03:03:56,698 INFO L858 garLoopResultBuilder]: For program point L541(lines 541 545) no Hoare annotation was computed. [2021-11-23 03:03:56,698 INFO L854 garLoopResultBuilder]: At program point L541-1(lines 528 547) the Hoare annotation is: (and (<= 5 ~MPR1~0) (not (= ~compRegistered~0 0)) (= ~s~0 ~NP~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,699 INFO L854 garLoopResultBuilder]: At program point L376(lines 369 418) the Hoare annotation is: (and (<= 5 ~MPR1~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,699 INFO L854 garLoopResultBuilder]: At program point L178(line 178) the Hoare annotation is: false [2021-11-23 03:03:56,699 INFO L854 garLoopResultBuilder]: At program point L509(line 509) the Hoare annotation is: false [2021-11-23 03:03:56,699 INFO L854 garLoopResultBuilder]: At program point L509-1(lines 501 514) the Hoare annotation is: (and (<= 5 ~MPR1~0) (not (= ~compRegistered~0 0)) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,699 INFO L854 garLoopResultBuilder]: At program point L262(lines 166 263) the Hoare annotation is: (and (<= 5 ~MPR1~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,700 INFO L854 garLoopResultBuilder]: At program point L543(line 543) the Hoare annotation is: false [2021-11-23 03:03:56,700 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 382) no Hoare annotation was computed. [2021-11-23 03:03:56,700 INFO L858 garLoopResultBuilder]: For program point L528(lines 528 547) no Hoare annotation was computed. [2021-11-23 03:03:56,700 INFO L854 garLoopResultBuilder]: At program point L396(lines 387 414) the Hoare annotation is: (and (<= 5 ~MPR1~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,700 INFO L854 garLoopResultBuilder]: At program point L165(lines 111 281) the Hoare annotation is: (and (<= 5 ~MPR1~0) (= ~s~0 ~NP~0) (= ~NP~0 1) (= |ULTIMATE.start_main_~status~1#1| 0) (= |ULTIMATE.start_main_~__cil_tmp8~0#1| 1) (= ~pended~0 0) (= ~compRegistered~0 0) (= ~SKIP1~0 3)) [2021-11-23 03:03:56,700 INFO L858 garLoopResultBuilder]: For program point L529(lines 529 534) no Hoare annotation was computed. [2021-11-23 03:03:56,700 INFO L858 garLoopResultBuilder]: For program point L232(lines 232 238) no Hoare annotation was computed. [2021-11-23 03:03:56,701 INFO L858 garLoopResultBuilder]: For program point L216(lines 216 222) no Hoare annotation was computed. [2021-11-23 03:03:56,701 INFO L858 garLoopResultBuilder]: For program point L398(lines 398 402) no Hoare annotation was computed. [2021-11-23 03:03:56,701 INFO L854 garLoopResultBuilder]: At program point L445(lines 445 448) the Hoare annotation is: (let ((.cse0 (not (= ~NP~0 1))) (.cse1 (not (= ~SKIP1~0 3))) (.cse4 (= ~compRegistered~0 0)) (.cse2 (= ~pended~0 1)) (.cse3 (not (<= 5 ~MPR1~0))) (.cse5 (= ~s~0 |old(~s~0)|))) (and (or .cse0 .cse1 (not (= ~NP~0 |old(~s~0)|)) .cse2 .cse3 .cse4 .cse5) (or .cse0 .cse1 (not .cse4) .cse2 .cse3 (not (= 3 |old(~s~0)|)) .cse5))) [2021-11-23 03:03:56,701 INFO L854 garLoopResultBuilder]: At program point L445-2(lines 445 448) the Hoare annotation is: (let ((.cse0 (not (= ~NP~0 1))) (.cse1 (not (= ~SKIP1~0 3))) (.cse4 (= ~compRegistered~0 0)) (.cse2 (= ~pended~0 1)) (.cse3 (not (<= 5 ~MPR1~0)))) (and (or .cse0 .cse1 (not (= ~NP~0 |old(~s~0)|)) .cse2 .cse3 (and (= ~setEventCalled~0 1) (= ~MPR1~0 ~s~0)) .cse4) (or .cse0 .cse1 (not .cse4) .cse2 .cse3 (not (= 3 |old(~s~0)|)) (= ~s~0 |old(~s~0)|)))) [2021-11-23 03:03:56,701 INFO L854 garLoopResultBuilder]: At program point IofCallDriverENTRY(lines 437 500) the Hoare annotation is: (let ((.cse0 (not (= ~NP~0 1))) (.cse1 (not (= ~SKIP1~0 3))) (.cse4 (= ~compRegistered~0 0)) (.cse2 (= ~pended~0 1)) (.cse3 (not (<= 5 ~MPR1~0))) (.cse5 (= ~s~0 |old(~s~0)|))) (and (or .cse0 .cse1 (not (= ~NP~0 |old(~s~0)|)) .cse2 .cse3 .cse4 .cse5) (or .cse0 .cse1 (not .cse4) .cse2 .cse3 (not (= 3 |old(~s~0)|)) .cse5))) [2021-11-23 03:03:56,702 INFO L858 garLoopResultBuilder]: For program point L479(lines 479 496) no Hoare annotation was computed. [2021-11-23 03:03:56,702 INFO L854 garLoopResultBuilder]: At program point L471(lines 444 499) the Hoare annotation is: (let ((.cse0 (not (= ~NP~0 1))) (.cse1 (not (= ~SKIP1~0 3))) (.cse4 (= ~compRegistered~0 0)) (.cse2 (= ~pended~0 1)) (.cse3 (not (<= 5 ~MPR1~0)))) (and (or .cse0 .cse1 (not (= ~NP~0 |old(~s~0)|)) .cse2 .cse3 (and (= ~setEventCalled~0 1) (= ~MPR1~0 ~s~0)) .cse4) (or .cse0 .cse1 (not .cse4) .cse2 .cse3 (not (= 3 |old(~s~0)|)) (= ~s~0 |old(~s~0)|)))) [2021-11-23 03:03:56,702 INFO L858 garLoopResultBuilder]: For program point IofCallDriverEXIT(lines 437 500) no Hoare annotation was computed. [2021-11-23 03:03:56,702 INFO L858 garLoopResultBuilder]: For program point L488(lines 488 495) no Hoare annotation was computed. [2021-11-23 03:03:56,702 INFO L854 garLoopResultBuilder]: At program point L431(line 431) the Hoare annotation is: (let ((.cse0 (not (= ~NP~0 1))) (.cse1 (not (= ~SKIP1~0 3))) (.cse3 (= ~pended~0 1)) (.cse4 (not (<= 5 ~MPR1~0))) (.cse2 (= ~compRegistered~0 0))) (and (or .cse0 .cse1 (not .cse2) .cse3 .cse4 (not (= 3 |old(~s~0)|))) (or .cse0 .cse1 (not (= ~NP~0 |old(~s~0)|)) .cse3 .cse4 .cse2))) [2021-11-23 03:03:56,703 INFO L854 garLoopResultBuilder]: At program point L431-1(lines 423 436) the Hoare annotation is: (let ((.cse0 (not (= ~NP~0 1))) (.cse1 (not (= ~SKIP1~0 3))) (.cse3 (= ~pended~0 1)) (.cse4 (not (<= 5 ~MPR1~0))) (.cse2 (= ~compRegistered~0 0))) (and (or .cse0 .cse1 (not .cse2) .cse3 .cse4 (not (= 3 |old(~s~0)|))) (or .cse0 .cse1 (not (= ~NP~0 |old(~s~0)|)) .cse3 .cse4 (and (= ~setEventCalled~0 1) (= ~MPR1~0 ~s~0)) .cse2))) [2021-11-23 03:03:56,703 INFO L854 garLoopResultBuilder]: At program point L493(line 493) the Hoare annotation is: (let ((.cse0 (not (= ~NP~0 1))) (.cse1 (not (= ~SKIP1~0 3))) (.cse3 (= ~pended~0 1)) (.cse4 (not (<= 5 ~MPR1~0))) (.cse2 (= ~compRegistered~0 0))) (and (or .cse0 .cse1 (not .cse2) .cse3 .cse4 (not (= 3 |old(~s~0)|))) (or .cse0 .cse1 (not (= ~NP~0 |old(~s~0)|)) .cse3 .cse4 .cse2))) [2021-11-23 03:03:56,703 INFO L858 garLoopResultBuilder]: For program point L493-1(lines 475 497) no Hoare annotation was computed. [2021-11-23 03:03:56,703 INFO L858 garLoopResultBuilder]: For program point L427(lines 427 433) no Hoare annotation was computed. [2021-11-23 03:03:56,707 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:56,709 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:03:56,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:03:56 BoogieIcfgContainer [2021-11-23 03:03:56,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:03:56,760 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:03:56,760 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:03:56,760 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:03:56,761 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:03:51" (3/4) ... [2021-11-23 03:03:56,764 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 03:03:56,770 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-11-23 03:03:56,771 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-11-23 03:03:56,796 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 61 nodes and edges [2021-11-23 03:03:56,798 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-23 03:03:56,799 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-23 03:03:56,800 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:03:56,835 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(NP == 1) || !(SKIP1 == 3)) || !(compRegistered == 0)) || pended == 1) || !(5 <= MPR1)) || !(3 == \old(s))) && ((((((!(NP == 1) || !(SKIP1 == 3)) || !(NP == \old(s))) || pended == 1) || !(5 <= MPR1)) || (setEventCalled == 1 && MPR1 == s)) || compRegistered == 0) [2021-11-23 03:03:56,836 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(NP == 1) || !(SKIP1 == 3)) || !(NP == \old(s))) || pended == 1) || !(5 <= MPR1)) || (setEventCalled == 1 && MPR1 == s)) || compRegistered == 0) && ((((((!(NP == 1) || !(SKIP1 == 3)) || !(compRegistered == 0)) || pended == 1) || !(5 <= MPR1)) || !(3 == \old(s))) || s == \old(s)) [2021-11-23 03:03:56,838 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(NP == 1) || !(SKIP1 == 3)) || !(NP == \old(s))) || pended == 1) || !(5 <= MPR1)) || compRegistered == 0) || s == \old(s)) && ((((((!(NP == 1) || !(SKIP1 == 3)) || !(compRegistered == 0)) || pended == 1) || !(5 <= MPR1)) || !(3 == \old(s))) || s == \old(s)) [2021-11-23 03:03:56,838 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(NP == 1) || !(SKIP1 == 3)) || !(NP == \old(s))) || pended == 1) || !(5 <= MPR1)) || (setEventCalled == 1 && MPR1 == s)) || compRegistered == 0) && ((((((!(NP == 1) || !(SKIP1 == 3)) || !(compRegistered == 0)) || pended == 1) || !(5 <= MPR1)) || !(3 == \old(s))) || s == \old(s)) [2021-11-23 03:03:56,950 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:03:56,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:03:56,951 INFO L158 Benchmark]: Toolchain (without parser) took 6781.33ms. Allocated memory was 90.2MB in the beginning and 136.3MB in the end (delta: 46.1MB). Free memory was 52.4MB in the beginning and 53.7MB in the end (delta: -1.3MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2021-11-23 03:03:56,951 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory is still 69.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:03:56,952 INFO L158 Benchmark]: CACSL2BoogieTranslator took 463.46ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 52.2MB in the beginning and 85.3MB in the end (delta: -33.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 03:03:56,953 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.46ms. Allocated memory is still 113.2MB. Free memory was 85.3MB in the beginning and 82.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:03:56,954 INFO L158 Benchmark]: Boogie Preprocessor took 96.87ms. Allocated memory is still 113.2MB. Free memory was 82.7MB in the beginning and 81.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:03:56,955 INFO L158 Benchmark]: RCFGBuilder took 985.47ms. Allocated memory is still 113.2MB. Free memory was 80.6MB in the beginning and 44.4MB in the end (delta: 36.2MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2021-11-23 03:03:56,955 INFO L158 Benchmark]: TraceAbstraction took 4938.42ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 43.9MB in the beginning and 63.2MB in the end (delta: -19.3MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2021-11-23 03:03:56,956 INFO L158 Benchmark]: Witness Printer took 190.33ms. Allocated memory is still 136.3MB. Free memory was 63.2MB in the beginning and 53.7MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:03:56,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory is still 69.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 463.46ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 52.2MB in the beginning and 85.3MB in the end (delta: -33.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.46ms. Allocated memory is still 113.2MB. Free memory was 85.3MB in the beginning and 82.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.87ms. Allocated memory is still 113.2MB. Free memory was 82.7MB in the beginning and 81.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 985.47ms. Allocated memory is still 113.2MB. Free memory was 80.6MB in the beginning and 44.4MB in the end (delta: 36.2MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4938.42ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 43.9MB in the beginning and 63.2MB in the end (delta: -19.3MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * Witness Printer took 190.33ms. Allocated memory is still 136.3MB. Free memory was 63.2MB in the beginning and 53.7MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 581]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.8s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 794 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 789 mSDsluCounter, 1490 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 901 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 992 IncrementalHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 765 mSDtfsCounter, 992 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=2, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 105 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 117 PreInvPairs, 141 NumberOfFragments, 805 HoareAnnotationTreeSize, 117 FomulaSimplifications, 203 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 36 FomulaSimplificationsInter, 1899 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 251 ConstructedInterpolants, 0 QuantifiedInterpolants, 664 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: ((((((5 <= MPR1 && s == NP) && NP == 1) && status == 0) && __cil_tmp8 == 1) && pended == 0) && compRegistered == 0) && SKIP1 == 3 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 352]: Loop Invariant Derived loop invariant: ((((((5 <= MPR1 && s == NP) && NP == 1) && status == 0) && __cil_tmp8 == 1) && pended == 0) && compRegistered == 0) && SKIP1 == 3 - InvariantResult [Line: 323]: Loop Invariant Derived loop invariant: ((((((5 <= MPR1 && !(pended == 1)) && NP == 1) && status == 0) && compRegistered == 0) && !(MPR3 == s)) && !(s == 1)) && SKIP1 == 3 - InvariantResult [Line: 528]: Loop Invariant Derived loop invariant: ((((((5 <= MPR1 && !(compRegistered == 0)) && s == NP) && NP == 1) && status == 0) && __cil_tmp8 == 1) && pended == 0) && SKIP1 == 3 - InvariantResult [Line: 288]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 108]: Loop Invariant Derived loop invariant: ((((((5 <= MPR1 && s == NP) && NP == 1) && status == 0) && __cil_tmp8 == 1) && pended == 0) && compRegistered == 0) && SKIP1 == 3 - InvariantResult [Line: 387]: Loop Invariant Derived loop invariant: (((5 <= MPR1 && NP == 1) && __cil_tmp8 == 1) && pended == 0) && SKIP1 == 3 - InvariantResult [Line: 423]: Loop Invariant Derived loop invariant: (((((!(NP == 1) || !(SKIP1 == 3)) || !(compRegistered == 0)) || pended == 1) || !(5 <= MPR1)) || !(3 == \old(s))) && ((((((!(NP == 1) || !(SKIP1 == 3)) || !(NP == \old(s))) || pended == 1) || !(5 <= MPR1)) || (setEventCalled == 1 && MPR1 == s)) || compRegistered == 0) - InvariantResult [Line: 444]: Loop Invariant Derived loop invariant: ((((((!(NP == 1) || !(SKIP1 == 3)) || !(NP == \old(s))) || pended == 1) || !(5 <= MPR1)) || (setEventCalled == 1 && MPR1 == s)) || compRegistered == 0) && ((((((!(NP == 1) || !(SKIP1 == 3)) || !(compRegistered == 0)) || pended == 1) || !(5 <= MPR1)) || !(3 == \old(s))) || s == \old(s)) - InvariantResult [Line: 297]: Loop Invariant Derived loop invariant: (((5 <= MPR1 && NP == 1) && __cil_tmp8 == 1) && pended == 0) && SKIP1 == 3 - InvariantResult [Line: 166]: Loop Invariant Derived loop invariant: ((((5 <= MPR1 && NP == 1) && status == 0) && __cil_tmp8 == 1) && pended == 0) && SKIP1 == 3 - InvariantResult [Line: 369]: Loop Invariant Derived loop invariant: (((5 <= MPR1 && NP == 1) && __cil_tmp8 == 1) && pended == 0) && SKIP1 == 3 - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: ((((((5 <= MPR1 && s == NP) && NP == 1) && status == 0) && __cil_tmp8 == 1) && pended == 0) && compRegistered == 0) && SKIP1 == 3 - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: ((((((5 <= MPR1 && s == NP) && NP == 1) && status == 0) && __cil_tmp8 == 1) && pended == 0) && compRegistered == 0) && SKIP1 == 3 - InvariantResult [Line: 445]: Loop Invariant Derived loop invariant: ((((((!(NP == 1) || !(SKIP1 == 3)) || !(NP == \old(s))) || pended == 1) || !(5 <= MPR1)) || (setEventCalled == 1 && MPR1 == s)) || compRegistered == 0) && ((((((!(NP == 1) || !(SKIP1 == 3)) || !(compRegistered == 0)) || pended == 1) || !(5 <= MPR1)) || !(3 == \old(s))) || s == \old(s)) - InvariantResult [Line: 501]: Loop Invariant Derived loop invariant: (((((5 <= MPR1 && !(compRegistered == 0)) && NP == 1) && status == 0) && __cil_tmp8 == 1) && pended == 0) && SKIP1 == 3 - InvariantResult [Line: 377]: Loop Invariant Derived loop invariant: (((5 <= MPR1 && NP == 1) && __cil_tmp8 == 1) && pended == 0) && SKIP1 == 3 - InvariantResult [Line: 528]: Loop Invariant Derived loop invariant: ((((((((setEventCalled == 1 && 5 <= MPR1) && !(compRegistered == 0)) && s == NP) && NP == 1) && status == 0) && __cil_tmp8 == 1) && pended == 0) && !(MPR3 == s)) && SKIP1 == 3 - InvariantResult [Line: 445]: Loop Invariant Derived loop invariant: ((((((!(NP == 1) || !(SKIP1 == 3)) || !(NP == \old(s))) || pended == 1) || !(5 <= MPR1)) || compRegistered == 0) || s == \old(s)) && ((((((!(NP == 1) || !(SKIP1 == 3)) || !(compRegistered == 0)) || pended == 1) || !(5 <= MPR1)) || !(3 == \old(s))) || s == \old(s)) RESULT: Ultimate proved your program to be correct! [2021-11-23 03:03:57,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_224fb963-b682-4c7f-a6f2-dbd86b4ea698/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE