./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/kundu1.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/kundu1.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh --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 c114a15ea6b1c9b012290758a6a9559b9c02a944706c9768958a3bd9c86822a7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:13:43,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:13:43,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:13:43,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:13:43,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:13:43,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:13:43,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:13:43,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:13:43,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:13:43,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:13:43,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:13:43,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:13:43,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:13:43,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:13:43,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:13:43,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:13:43,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:13:43,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:13:43,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:13:43,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:13:43,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:13:43,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:13:43,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:13:43,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:13:43,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:13:43,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:13:43,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:13:43,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:13:43,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:13:43,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:13:43,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:13:43,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:13:43,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:13:43,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:13:43,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:13:43,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:13:43,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:13:43,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:13:43,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:13:43,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:13:43,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:13:43,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:13:43,700 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:13:43,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:13:43,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:13:43,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:13:43,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:13:43,701 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:13:43,701 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:13:43,701 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:13:43,702 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:13:43,702 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:13:43,702 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:13:43,702 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:13:43,702 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:13:43,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:13:43,702 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:13:43,703 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:13:43,703 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:13:43,703 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:13:43,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:13:43,703 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:13:43,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:13:43,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:13:43,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:13:43,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:13:43,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:13:43,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:13:43,704 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:13:43,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:13:43,705 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:13:43,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:13:43,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:13:43,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:13:43,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:13:43,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:13:43,705 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:13:43,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:13:43,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:13:43,706 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:13:43,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:13:43,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:13:43,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:13:43,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c114a15ea6b1c9b012290758a6a9559b9c02a944706c9768958a3bd9c86822a7 [2022-12-14 10:13:43,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:13:43,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:13:43,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:13:43,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:13:43,903 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:13:43,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/systemc/kundu1.cil.c [2022-12-14 10:13:46,522 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:13:46,689 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:13:46,689 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/sv-benchmarks/c/systemc/kundu1.cil.c [2022-12-14 10:13:46,697 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/data/dc502e082/bf569f305ff44d2ea04d3f6d7b361f74/FLAGbee622429 [2022-12-14 10:13:46,709 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/data/dc502e082/bf569f305ff44d2ea04d3f6d7b361f74 [2022-12-14 10:13:46,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:13:46,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:13:46,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:13:46,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:13:46,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:13:46,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:13:46" (1/1) ... [2022-12-14 10:13:46,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47000a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46, skipping insertion in model container [2022-12-14 10:13:46,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:13:46" (1/1) ... [2022-12-14 10:13:46,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:13:46,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:13:46,868 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/sv-benchmarks/c/systemc/kundu1.cil.c[636,649] [2022-12-14 10:13:46,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:13:46,926 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:13:46,935 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/sv-benchmarks/c/systemc/kundu1.cil.c[636,649] [2022-12-14 10:13:46,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:13:46,970 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:13:46,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46 WrapperNode [2022-12-14 10:13:46,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:13:46,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:13:46,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:13:46,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:13:46,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46" (1/1) ... [2022-12-14 10:13:46,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46" (1/1) ... [2022-12-14 10:13:47,000 INFO L138 Inliner]: procedures = 32, calls = 36, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 257 [2022-12-14 10:13:47,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:13:47,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:13:47,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:13:47,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:13:47,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46" (1/1) ... [2022-12-14 10:13:47,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46" (1/1) ... [2022-12-14 10:13:47,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46" (1/1) ... [2022-12-14 10:13:47,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46" (1/1) ... [2022-12-14 10:13:47,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46" (1/1) ... [2022-12-14 10:13:47,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46" (1/1) ... [2022-12-14 10:13:47,023 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46" (1/1) ... [2022-12-14 10:13:47,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46" (1/1) ... [2022-12-14 10:13:47,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:13:47,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:13:47,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:13:47,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:13:47,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46" (1/1) ... [2022-12-14 10:13:47,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:13:47,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:13:47,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:13:47,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:13:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:13:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-12-14 10:13:47,094 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-12-14 10:13:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-14 10:13:47,094 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-14 10:13:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-14 10:13:47,094 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-14 10:13:47,095 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-14 10:13:47,095 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-14 10:13:47,095 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-14 10:13:47,095 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-14 10:13:47,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:13:47,095 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-14 10:13:47,095 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-14 10:13:47,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:13:47,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:13:47,156 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:13:47,158 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:13:47,390 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:13:47,455 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:13:47,456 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 10:13:47,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:13:47 BoogieIcfgContainer [2022-12-14 10:13:47,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:13:47,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:13:47,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:13:47,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:13:47,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:13:46" (1/3) ... [2022-12-14 10:13:47,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f0e152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:13:47, skipping insertion in model container [2022-12-14 10:13:47,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:13:46" (2/3) ... [2022-12-14 10:13:47,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f0e152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:13:47, skipping insertion in model container [2022-12-14 10:13:47,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:13:47" (3/3) ... [2022-12-14 10:13:47,464 INFO L112 eAbstractionObserver]: Analyzing ICFG kundu1.cil.c [2022-12-14 10:13:47,478 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:13:47,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:13:47,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:13:47,521 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2551e3b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:13:47,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:13:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 52 states have (on average 1.5) internal successors, (78), 56 states have internal predecessors, (78), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 10:13:47,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 10:13:47,531 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:47,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:47,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:13:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:47,536 INFO L85 PathProgramCache]: Analyzing trace with hash 941365448, now seen corresponding path program 1 times [2022-12-14 10:13:47,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:13:47,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525205009] [2022-12-14 10:13:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:47,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:13:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:47,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:13:47,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525205009] [2022-12-14 10:13:47,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525205009] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:13:47,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:13:47,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:13:47,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706291533] [2022-12-14 10:13:47,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:13:47,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:13:47,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:13:47,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:13:47,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:13:47,754 INFO L87 Difference]: Start difference. First operand has 75 states, 52 states have (on average 1.5) internal successors, (78), 56 states have internal predecessors, (78), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 10:13:47,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:47,954 INFO L93 Difference]: Finished difference Result 209 states and 305 transitions. [2022-12-14 10:13:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:13:47,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-12-14 10:13:47,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:47,965 INFO L225 Difference]: With dead ends: 209 [2022-12-14 10:13:47,965 INFO L226 Difference]: Without dead ends: 135 [2022-12-14 10:13:47,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:13:47,972 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 177 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:47,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 264 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:13:47,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-12-14 10:13:48,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 127. [2022-12-14 10:13:48,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 96 states have internal predecessors, (133), 23 states have call successors, (23), 11 states have call predecessors, (23), 10 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-14 10:13:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 176 transitions. [2022-12-14 10:13:48,027 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 176 transitions. Word has length 34 [2022-12-14 10:13:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:48,027 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 176 transitions. [2022-12-14 10:13:48,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 10:13:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 176 transitions. [2022-12-14 10:13:48,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 10:13:48,030 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:48,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:48,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:13:48,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:13:48,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:48,031 INFO L85 PathProgramCache]: Analyzing trace with hash -649029529, now seen corresponding path program 1 times [2022-12-14 10:13:48,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:13:48,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329139703] [2022-12-14 10:13:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:48,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:13:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:48,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:13:48,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329139703] [2022-12-14 10:13:48,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329139703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:13:48,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:13:48,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:13:48,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23239748] [2022-12-14 10:13:48,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:13:48,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:13:48,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:13:48,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:13:48,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:13:48,124 INFO L87 Difference]: Start difference. First operand 127 states and 176 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 10:13:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:48,259 INFO L93 Difference]: Finished difference Result 366 states and 507 transitions. [2022-12-14 10:13:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:13:48,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-12-14 10:13:48,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:48,263 INFO L225 Difference]: With dead ends: 366 [2022-12-14 10:13:48,263 INFO L226 Difference]: Without dead ends: 244 [2022-12-14 10:13:48,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:13:48,265 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 169 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:48,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 236 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:13:48,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-12-14 10:13:48,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 225. [2022-12-14 10:13:48,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 165 states have (on average 1.3636363636363635) internal successors, (225), 168 states have internal predecessors, (225), 39 states have call successors, (39), 21 states have call predecessors, (39), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-12-14 10:13:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 300 transitions. [2022-12-14 10:13:48,301 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 300 transitions. Word has length 34 [2022-12-14 10:13:48,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:48,302 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 300 transitions. [2022-12-14 10:13:48,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 10:13:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 300 transitions. [2022-12-14 10:13:48,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 10:13:48,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:48,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:48,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:13:48,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:13:48,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:48,305 INFO L85 PathProgramCache]: Analyzing trace with hash 837489357, now seen corresponding path program 1 times [2022-12-14 10:13:48,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:13:48,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123425015] [2022-12-14 10:13:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:48,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:13:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:48,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:13:48,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123425015] [2022-12-14 10:13:48,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123425015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:13:48,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:13:48,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:13:48,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883069924] [2022-12-14 10:13:48,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:13:48,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:13:48,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:13:48,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:13:48,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:13:48,435 INFO L87 Difference]: Start difference. First operand 225 states and 300 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 10:13:48,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:48,573 INFO L93 Difference]: Finished difference Result 607 states and 835 transitions. [2022-12-14 10:13:48,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:13:48,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2022-12-14 10:13:48,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:48,576 INFO L225 Difference]: With dead ends: 607 [2022-12-14 10:13:48,577 INFO L226 Difference]: Without dead ends: 435 [2022-12-14 10:13:48,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:13:48,579 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 129 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:48,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 335 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:13:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-12-14 10:13:48,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 328. [2022-12-14 10:13:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 242 states have (on average 1.3636363636363635) internal successors, (330), 245 states have internal predecessors, (330), 55 states have call successors, (55), 31 states have call predecessors, (55), 30 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-12-14 10:13:48,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 437 transitions. [2022-12-14 10:13:48,627 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 437 transitions. Word has length 35 [2022-12-14 10:13:48,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:48,627 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 437 transitions. [2022-12-14 10:13:48,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 10:13:48,627 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 437 transitions. [2022-12-14 10:13:48,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 10:13:48,629 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:48,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:48,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:13:48,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:13:48,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:48,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1822212729, now seen corresponding path program 1 times [2022-12-14 10:13:48,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:13:48,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836247582] [2022-12-14 10:13:48,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:48,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:13:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:48,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:13:48,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836247582] [2022-12-14 10:13:48,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836247582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:13:48,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:13:48,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:13:48,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943615552] [2022-12-14 10:13:48,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:13:48,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:13:48,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:13:48,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:13:48,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:13:48,731 INFO L87 Difference]: Start difference. First operand 328 states and 437 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 10:13:48,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:48,819 INFO L93 Difference]: Finished difference Result 509 states and 680 transitions. [2022-12-14 10:13:48,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:13:48,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2022-12-14 10:13:48,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:48,822 INFO L225 Difference]: With dead ends: 509 [2022-12-14 10:13:48,822 INFO L226 Difference]: Without dead ends: 392 [2022-12-14 10:13:48,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:13:48,824 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 149 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:48,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 184 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:13:48,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-12-14 10:13:48,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 383. [2022-12-14 10:13:48,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 284 states have (on average 1.3626760563380282) internal successors, (387), 287 states have internal predecessors, (387), 63 states have call successors, (63), 36 states have call predecessors, (63), 35 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-12-14 10:13:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 510 transitions. [2022-12-14 10:13:48,853 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 510 transitions. Word has length 43 [2022-12-14 10:13:48,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:48,853 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 510 transitions. [2022-12-14 10:13:48,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 10:13:48,854 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 510 transitions. [2022-12-14 10:13:48,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 10:13:48,855 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:48,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:48,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:13:48,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:13:48,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:48,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1463036128, now seen corresponding path program 1 times [2022-12-14 10:13:48,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:13:48,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471198751] [2022-12-14 10:13:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:48,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:13:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:48,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:13:48,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471198751] [2022-12-14 10:13:48,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471198751] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:13:48,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:13:48,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:13:48,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359449268] [2022-12-14 10:13:48,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:13:48,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:13:48,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:13:48,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:13:48,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:13:48,971 INFO L87 Difference]: Start difference. First operand 383 states and 510 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 10:13:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:49,213 INFO L93 Difference]: Finished difference Result 1013 states and 1383 transitions. [2022-12-14 10:13:49,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:13:49,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-12-14 10:13:49,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:49,217 INFO L225 Difference]: With dead ends: 1013 [2022-12-14 10:13:49,217 INFO L226 Difference]: Without dead ends: 735 [2022-12-14 10:13:49,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:13:49,219 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 266 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:49,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 616 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:13:49,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-12-14 10:13:49,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 539. [2022-12-14 10:13:49,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 401 states have (on average 1.3591022443890275) internal successors, (545), 404 states have internal predecessors, (545), 87 states have call successors, (87), 51 states have call predecessors, (87), 50 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-14 10:13:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 716 transitions. [2022-12-14 10:13:49,270 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 716 transitions. Word has length 46 [2022-12-14 10:13:49,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:49,270 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 716 transitions. [2022-12-14 10:13:49,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 10:13:49,270 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 716 transitions. [2022-12-14 10:13:49,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 10:13:49,272 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:49,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:49,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:13:49,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:13:49,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:49,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1096993177, now seen corresponding path program 1 times [2022-12-14 10:13:49,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:13:49,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446081307] [2022-12-14 10:13:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:49,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:13:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:13:49,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:13:49,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446081307] [2022-12-14 10:13:49,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446081307] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:13:49,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:13:49,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:13:49,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380422523] [2022-12-14 10:13:49,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:13:49,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:13:49,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:13:49,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:13:49,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:13:49,383 INFO L87 Difference]: Start difference. First operand 539 states and 716 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 10:13:49,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:49,611 INFO L93 Difference]: Finished difference Result 1556 states and 2057 transitions. [2022-12-14 10:13:49,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:13:49,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2022-12-14 10:13:49,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:49,618 INFO L225 Difference]: With dead ends: 1556 [2022-12-14 10:13:49,619 INFO L226 Difference]: Without dead ends: 1023 [2022-12-14 10:13:49,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:13:49,621 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 180 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:49,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 212 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:13:49,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2022-12-14 10:13:49,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 992. [2022-12-14 10:13:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 724 states have (on average 1.3342541436464088) internal successors, (966), 727 states have internal predecessors, (966), 167 states have call successors, (167), 101 states have call predecessors, (167), 100 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2022-12-14 10:13:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1297 transitions. [2022-12-14 10:13:49,731 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1297 transitions. Word has length 48 [2022-12-14 10:13:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:49,732 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1297 transitions. [2022-12-14 10:13:49,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 10:13:49,732 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1297 transitions. [2022-12-14 10:13:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 10:13:49,733 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:49,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:49,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:13:49,733 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:13:49,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:49,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1973261035, now seen corresponding path program 1 times [2022-12-14 10:13:49,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:13:49,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592286538] [2022-12-14 10:13:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:49,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:13:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:13:49,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:13:49,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592286538] [2022-12-14 10:13:49,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592286538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:13:49,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:13:49,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:13:49,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185007369] [2022-12-14 10:13:49,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:13:49,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:13:49,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:13:49,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:13:49,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:13:49,777 INFO L87 Difference]: Start difference. First operand 992 states and 1297 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 10:13:49,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:49,890 INFO L93 Difference]: Finished difference Result 2491 states and 3230 transitions. [2022-12-14 10:13:49,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:13:49,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2022-12-14 10:13:49,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:49,895 INFO L225 Difference]: With dead ends: 2491 [2022-12-14 10:13:49,895 INFO L226 Difference]: Without dead ends: 1505 [2022-12-14 10:13:49,897 INFO L412 NwaCegarLoop]: 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 [2022-12-14 10:13:49,897 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 42 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:49,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 194 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:13:49,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2022-12-14 10:13:49,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1235. [2022-12-14 10:13:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 923 states have (on average 1.333694474539545) internal successors, (1231), 927 states have internal predecessors, (1231), 189 states have call successors, (189), 123 states have call predecessors, (189), 122 states have return successors, (186), 185 states have call predecessors, (186), 186 states have call successors, (186) [2022-12-14 10:13:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1606 transitions. [2022-12-14 10:13:49,979 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1606 transitions. Word has length 49 [2022-12-14 10:13:49,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:49,979 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 1606 transitions. [2022-12-14 10:13:49,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 10:13:49,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1606 transitions. [2022-12-14 10:13:49,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 10:13:49,980 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:49,980 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:49,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:13:49,981 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:13:49,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:49,981 INFO L85 PathProgramCache]: Analyzing trace with hash -356890693, now seen corresponding path program 1 times [2022-12-14 10:13:49,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:13:49,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580019068] [2022-12-14 10:13:49,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:49,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:13:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:13:50,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:13:50,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580019068] [2022-12-14 10:13:50,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580019068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:13:50,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:13:50,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:13:50,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064894169] [2022-12-14 10:13:50,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:13:50,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:13:50,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:13:50,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:13:50,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:13:50,020 INFO L87 Difference]: Start difference. First operand 1235 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 10:13:50,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:50,137 INFO L93 Difference]: Finished difference Result 2860 states and 3725 transitions. [2022-12-14 10:13:50,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:13:50,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2022-12-14 10:13:50,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:50,142 INFO L225 Difference]: With dead ends: 2860 [2022-12-14 10:13:50,142 INFO L226 Difference]: Without dead ends: 1631 [2022-12-14 10:13:50,144 INFO L412 NwaCegarLoop]: 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 [2022-12-14 10:13:50,145 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 42 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:50,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 195 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:13:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-12-14 10:13:50,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1437. [2022-12-14 10:13:50,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1085 states have (on average 1.335483870967742) internal successors, (1449), 1089 states have internal predecessors, (1449), 209 states have call successors, (209), 143 states have call predecessors, (209), 142 states have return successors, (206), 205 states have call predecessors, (206), 206 states have call successors, (206) [2022-12-14 10:13:50,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1864 transitions. [2022-12-14 10:13:50,224 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1864 transitions. Word has length 50 [2022-12-14 10:13:50,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:50,225 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 1864 transitions. [2022-12-14 10:13:50,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 10:13:50,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1864 transitions. [2022-12-14 10:13:50,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 10:13:50,226 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:50,226 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:50,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:13:50,226 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:13:50,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:50,227 INFO L85 PathProgramCache]: Analyzing trace with hash -163666461, now seen corresponding path program 1 times [2022-12-14 10:13:50,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:13:50,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939549333] [2022-12-14 10:13:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:50,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:13:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 10:13:50,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:13:50,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939549333] [2022-12-14 10:13:50,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939549333] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:13:50,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733340223] [2022-12-14 10:13:50,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:50,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:13:50,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:13:50,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:13:50,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:13:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:50,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:13:50,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:13:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 10:13:50,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:13:50,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733340223] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:13:50,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:13:50,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2022-12-14 10:13:50,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796869134] [2022-12-14 10:13:50,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:13:50,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:13:50,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:13:50,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:13:50,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:13:50,632 INFO L87 Difference]: Start difference. First operand 1437 states and 1864 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 10:13:50,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:50,817 INFO L93 Difference]: Finished difference Result 3838 states and 4994 transitions. [2022-12-14 10:13:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:13:50,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2022-12-14 10:13:50,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:50,825 INFO L225 Difference]: With dead ends: 3838 [2022-12-14 10:13:50,825 INFO L226 Difference]: Without dead ends: 2828 [2022-12-14 10:13:50,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:13:50,828 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 49 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:50,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 177 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:13:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2022-12-14 10:13:50,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2815. [2022-12-14 10:13:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2143 states have (on average 1.333177788147457) internal successors, (2857), 2147 states have internal predecessors, (2857), 389 states have call successors, (389), 283 states have call predecessors, (389), 282 states have return successors, (386), 385 states have call predecessors, (386), 386 states have call successors, (386) [2022-12-14 10:13:51,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3632 transitions. [2022-12-14 10:13:51,004 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3632 transitions. Word has length 88 [2022-12-14 10:13:51,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:51,004 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 3632 transitions. [2022-12-14 10:13:51,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 10:13:51,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3632 transitions. [2022-12-14 10:13:51,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 10:13:51,005 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:51,006 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:51,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:13:51,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 10:13:51,207 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:13:51,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:51,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1928483070, now seen corresponding path program 1 times [2022-12-14 10:13:51,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:13:51,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315399688] [2022-12-14 10:13:51,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:51,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:13:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 10:13:51,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:13:51,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315399688] [2022-12-14 10:13:51,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315399688] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:13:51,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748898085] [2022-12-14 10:13:51,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:51,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:13:51,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:13:51,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:13:51,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:13:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:51,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:13:51,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:13:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:13:51,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:13:51,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748898085] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:13:51,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:13:51,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-12-14 10:13:51,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899703730] [2022-12-14 10:13:51,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:13:51,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:13:51,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:13:51,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:13:51,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:13:51,564 INFO L87 Difference]: Start difference. First operand 2815 states and 3632 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 10:13:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:51,823 INFO L93 Difference]: Finished difference Result 4830 states and 6297 transitions. [2022-12-14 10:13:51,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:13:51,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 88 [2022-12-14 10:13:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:51,835 INFO L225 Difference]: With dead ends: 4830 [2022-12-14 10:13:51,835 INFO L226 Difference]: Without dead ends: 2843 [2022-12-14 10:13:51,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:13:51,840 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 68 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:51,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 220 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:13:51,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2022-12-14 10:13:52,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2815. [2022-12-14 10:13:52,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2143 states have (on average 1.3201119925338312) internal successors, (2829), 2147 states have internal predecessors, (2829), 389 states have call successors, (389), 283 states have call predecessors, (389), 282 states have return successors, (386), 385 states have call predecessors, (386), 386 states have call successors, (386) [2022-12-14 10:13:52,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3604 transitions. [2022-12-14 10:13:52,030 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3604 transitions. Word has length 88 [2022-12-14 10:13:52,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:52,031 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 3604 transitions. [2022-12-14 10:13:52,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 10:13:52,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3604 transitions. [2022-12-14 10:13:52,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 10:13:52,033 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:52,033 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:52,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 10:13:52,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 10:13:52,234 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:13:52,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:52,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1062438256, now seen corresponding path program 1 times [2022-12-14 10:13:52,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:13:52,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527283855] [2022-12-14 10:13:52,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:52,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:13:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 10:13:52,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:13:52,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527283855] [2022-12-14 10:13:52,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527283855] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:13:52,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149874701] [2022-12-14 10:13:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:52,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:13:52,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:13:52,318 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:13:52,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:13:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:52,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:13:52,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:13:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 10:13:52,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:13:52,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149874701] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:13:52,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:13:52,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 10:13:52,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709016662] [2022-12-14 10:13:52,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:13:52,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:13:52,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:13:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:13:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:13:52,440 INFO L87 Difference]: Start difference. First operand 2815 states and 3604 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 10:13:52,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:52,594 INFO L93 Difference]: Finished difference Result 4816 states and 6236 transitions. [2022-12-14 10:13:52,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:13:52,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2022-12-14 10:13:52,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:52,601 INFO L225 Difference]: With dead ends: 4816 [2022-12-14 10:13:52,601 INFO L226 Difference]: Without dead ends: 2815 [2022-12-14 10:13:52,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:13:52,604 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:52,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 82 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:13:52,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2022-12-14 10:13:52,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2022-12-14 10:13:52,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2143 states have (on average 1.3070461969202054) internal successors, (2801), 2147 states have internal predecessors, (2801), 389 states have call successors, (389), 283 states have call predecessors, (389), 282 states have return successors, (386), 385 states have call predecessors, (386), 386 states have call successors, (386) [2022-12-14 10:13:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3576 transitions. [2022-12-14 10:13:52,791 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3576 transitions. Word has length 88 [2022-12-14 10:13:52,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:52,792 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 3576 transitions. [2022-12-14 10:13:52,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 10:13:52,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3576 transitions. [2022-12-14 10:13:52,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 10:13:52,793 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:52,794 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:52,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:13:52,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:13:52,994 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:13:52,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:52,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1531735505, now seen corresponding path program 1 times [2022-12-14 10:13:52,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:13:52,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013592869] [2022-12-14 10:13:52,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:52,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:13:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:53,211 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 10:13:53,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:13:53,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013592869] [2022-12-14 10:13:53,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013592869] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:13:53,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563240014] [2022-12-14 10:13:53,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:53,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:13:53,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:13:53,213 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:13:53,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:13:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:53,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:13:53,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:13:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:13:53,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:13:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 10:13:53,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563240014] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:13:53,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [895990977] [2022-12-14 10:13:53,513 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2022-12-14 10:13:53,514 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:13:53,517 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:13:53,521 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:13:53,522 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:13:56,005 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 107 for LOIs [2022-12-14 10:13:56,023 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 115 for LOIs [2022-12-14 10:13:56,042 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 115 for LOIs [2022-12-14 10:13:56,061 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 42 for LOIs [2022-12-14 10:13:56,065 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 123 for LOIs [2022-12-14 10:13:56,161 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:13:59,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [895990977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:13:59,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:13:59,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [12, 4, 5] total 45 [2022-12-14 10:13:59,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619267468] [2022-12-14 10:13:59,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:13:59,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 10:13:59,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:13:59,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 10:13:59,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1730, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 10:13:59,901 INFO L87 Difference]: Start difference. First operand 2815 states and 3576 transitions. Second operand has 32 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 27 states have internal predecessors, (39), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 10:14:01,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:14:01,715 INFO L93 Difference]: Finished difference Result 5594 states and 7116 transitions. [2022-12-14 10:14:01,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-14 10:14:01,716 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 27 states have internal predecessors, (39), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 89 [2022-12-14 10:14:01,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:14:01,722 INFO L225 Difference]: With dead ends: 5594 [2022-12-14 10:14:01,722 INFO L226 Difference]: Without dead ends: 2785 [2022-12-14 10:14:01,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 231 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=408, Invalid=2898, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 10:14:01,726 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 93 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:14:01,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 515 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 10:14:01,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2022-12-14 10:14:01,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2705. [2022-12-14 10:14:01,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2061 states have (on average 1.304706453178069) internal successors, (2689), 2064 states have internal predecessors, (2689), 374 states have call successors, (374), 270 states have call predecessors, (374), 269 states have return successors, (371), 371 states have call predecessors, (371), 371 states have call successors, (371) [2022-12-14 10:14:01,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3434 transitions. [2022-12-14 10:14:01,889 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3434 transitions. Word has length 89 [2022-12-14 10:14:01,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:14:01,889 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 3434 transitions. [2022-12-14 10:14:01,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 27 states have internal predecessors, (39), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 10:14:01,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3434 transitions. [2022-12-14 10:14:01,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 10:14:01,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:14:01,890 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:14:01,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:14:02,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:02,091 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:14:02,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:14:02,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1843436301, now seen corresponding path program 1 times [2022-12-14 10:14:02,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:14:02,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887316065] [2022-12-14 10:14:02,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:02,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:14:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 10:14:02,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:14:02,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887316065] [2022-12-14 10:14:02,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887316065] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:14:02,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39453225] [2022-12-14 10:14:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:02,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:02,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:14:02,156 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:14:02,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:14:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:02,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:14:02,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:14:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 10:14:02,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:14:02,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39453225] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:14:02,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:14:02,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 10:14:02,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684340159] [2022-12-14 10:14:02,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:14:02,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:14:02,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:14:02,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:14:02,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:14:02,275 INFO L87 Difference]: Start difference. First operand 2705 states and 3434 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 10:14:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:14:02,466 INFO L93 Difference]: Finished difference Result 4711 states and 6014 transitions. [2022-12-14 10:14:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:14:02,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 89 [2022-12-14 10:14:02,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:14:02,473 INFO L225 Difference]: With dead ends: 4711 [2022-12-14 10:14:02,473 INFO L226 Difference]: Without dead ends: 2710 [2022-12-14 10:14:02,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:14:02,476 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 48 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:14:02,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 176 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:14:02,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2022-12-14 10:14:02,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2705. [2022-12-14 10:14:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2061 states have (on average 1.2979136341581756) internal successors, (2675), 2064 states have internal predecessors, (2675), 374 states have call successors, (374), 270 states have call predecessors, (374), 269 states have return successors, (371), 371 states have call predecessors, (371), 371 states have call successors, (371) [2022-12-14 10:14:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3420 transitions. [2022-12-14 10:14:02,648 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3420 transitions. Word has length 89 [2022-12-14 10:14:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:14:02,648 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 3420 transitions. [2022-12-14 10:14:02,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 10:14:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3420 transitions. [2022-12-14 10:14:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 10:14:02,649 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:14:02,649 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:14:02,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 10:14:02,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 10:14:02,850 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:14:02,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:14:02,850 INFO L85 PathProgramCache]: Analyzing trace with hash 822880722, now seen corresponding path program 1 times [2022-12-14 10:14:02,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:14:02,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060278457] [2022-12-14 10:14:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:02,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:14:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:02,909 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 10:14:02,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:14:02,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060278457] [2022-12-14 10:14:02,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060278457] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:14:02,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937757906] [2022-12-14 10:14:02,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:02,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:02,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:14:02,911 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:14:02,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 10:14:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:02,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:14:02,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:14:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:14:02,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:14:02,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937757906] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:14:02,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:14:02,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 10:14:02,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212236239] [2022-12-14 10:14:02,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:14:03,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:14:03,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:14:03,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:14:03,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:14:03,000 INFO L87 Difference]: Start difference. First operand 2705 states and 3420 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 10:14:03,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:14:03,286 INFO L93 Difference]: Finished difference Result 5838 states and 7493 transitions. [2022-12-14 10:14:03,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:14:03,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 89 [2022-12-14 10:14:03,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:14:03,296 INFO L225 Difference]: With dead ends: 5838 [2022-12-14 10:14:03,296 INFO L226 Difference]: Without dead ends: 3837 [2022-12-14 10:14:03,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:14:03,300 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 59 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:14:03,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 203 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:14:03,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2022-12-14 10:14:03,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 3773. [2022-12-14 10:14:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 2835 states have (on average 1.2694885361552029) internal successors, (3599), 2838 states have internal predecessors, (3599), 546 states have call successors, (546), 392 states have call predecessors, (546), 391 states have return successors, (573), 543 states have call predecessors, (573), 543 states have call successors, (573) [2022-12-14 10:14:03,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 4718 transitions. [2022-12-14 10:14:03,523 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 4718 transitions. Word has length 89 [2022-12-14 10:14:03,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:14:03,523 INFO L495 AbstractCegarLoop]: Abstraction has 3773 states and 4718 transitions. [2022-12-14 10:14:03,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 10:14:03,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 4718 transitions. [2022-12-14 10:14:03,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 10:14:03,525 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:14:03,525 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:14:03,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 10:14:03,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 10:14:03,727 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:14:03,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:14:03,728 INFO L85 PathProgramCache]: Analyzing trace with hash 815957492, now seen corresponding path program 1 times [2022-12-14 10:14:03,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:14:03,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347119892] [2022-12-14 10:14:03,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:03,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:14:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 10:14:03,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:14:03,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347119892] [2022-12-14 10:14:03,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347119892] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:14:03,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153220700] [2022-12-14 10:14:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:03,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:03,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:14:03,906 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:14:03,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 10:14:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:03,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:14:03,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:14:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 10:14:04,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:14:04,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153220700] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:14:04,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:14:04,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2022-12-14 10:14:04,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693462207] [2022-12-14 10:14:04,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:14:04,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:14:04,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:14:04,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:14:04,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:14:04,003 INFO L87 Difference]: Start difference. First operand 3773 states and 4718 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 10:14:04,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:14:04,485 INFO L93 Difference]: Finished difference Result 10150 states and 12591 transitions. [2022-12-14 10:14:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:14:04,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 90 [2022-12-14 10:14:04,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:14:04,503 INFO L225 Difference]: With dead ends: 10150 [2022-12-14 10:14:04,503 INFO L226 Difference]: Without dead ends: 6383 [2022-12-14 10:14:04,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:14:04,508 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 192 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:14:04,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 237 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:14:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2022-12-14 10:14:04,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6379. [2022-12-14 10:14:04,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6379 states, 4679 states have (on average 1.2280401795255396) internal successors, (5746), 4682 states have internal predecessors, (5746), 1000 states have call successors, (1000), 700 states have call predecessors, (1000), 699 states have return successors, (1057), 997 states have call predecessors, (1057), 997 states have call successors, (1057) [2022-12-14 10:14:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6379 states to 6379 states and 7803 transitions. [2022-12-14 10:14:04,930 INFO L78 Accepts]: Start accepts. Automaton has 6379 states and 7803 transitions. Word has length 90 [2022-12-14 10:14:04,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:14:04,931 INFO L495 AbstractCegarLoop]: Abstraction has 6379 states and 7803 transitions. [2022-12-14 10:14:04,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 10:14:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 6379 states and 7803 transitions. [2022-12-14 10:14:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 10:14:04,932 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:14:04,932 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:14:04,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 10:14:05,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:05,133 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:14:05,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:14:05,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1952626162, now seen corresponding path program 1 times [2022-12-14 10:14:05,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:14:05,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962871875] [2022-12-14 10:14:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:05,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:14:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 10:14:05,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:14:05,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962871875] [2022-12-14 10:14:05,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962871875] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:14:05,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32397013] [2022-12-14 10:14:05,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:05,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:05,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:14:05,219 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:14:05,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 10:14:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:05,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 10:14:05,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:14:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:14:05,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:14:05,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32397013] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:14:05,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:14:05,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-12-14 10:14:05,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198623368] [2022-12-14 10:14:05,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:14:05,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:14:05,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:14:05,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:14:05,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:14:05,367 INFO L87 Difference]: Start difference. First operand 6379 states and 7803 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 10:14:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:14:05,934 INFO L93 Difference]: Finished difference Result 12253 states and 15351 transitions. [2022-12-14 10:14:05,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:14:05,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 92 [2022-12-14 10:14:05,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:14:05,952 INFO L225 Difference]: With dead ends: 12253 [2022-12-14 10:14:05,952 INFO L226 Difference]: Without dead ends: 5880 [2022-12-14 10:14:05,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-12-14 10:14:05,959 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 142 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:14:05,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 425 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:14:05,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2022-12-14 10:14:06,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 4590. [2022-12-14 10:14:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 3484 states have (on average 1.247703788748565) internal successors, (4347), 3487 states have internal predecessors, (4347), 631 states have call successors, (631), 475 states have call predecessors, (631), 474 states have return successors, (658), 628 states have call predecessors, (658), 628 states have call successors, (658) [2022-12-14 10:14:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 5636 transitions. [2022-12-14 10:14:06,294 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 5636 transitions. Word has length 92 [2022-12-14 10:14:06,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:14:06,294 INFO L495 AbstractCegarLoop]: Abstraction has 4590 states and 5636 transitions. [2022-12-14 10:14:06,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 10:14:06,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 5636 transitions. [2022-12-14 10:14:06,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 10:14:06,297 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:14:06,297 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:14:06,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 10:14:06,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 10:14:06,498 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:14:06,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:14:06,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1925315183, now seen corresponding path program 1 times [2022-12-14 10:14:06,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:14:06,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371920338] [2022-12-14 10:14:06,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:06,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:14:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 10:14:06,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:14:06,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371920338] [2022-12-14 10:14:06,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371920338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:14:06,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:14:06,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:14:06,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741797028] [2022-12-14 10:14:06,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:14:06,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:14:06,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:14:06,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:14:06,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:14:06,559 INFO L87 Difference]: Start difference. First operand 4590 states and 5636 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 10:14:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:14:06,961 INFO L93 Difference]: Finished difference Result 7625 states and 9413 transitions. [2022-12-14 10:14:06,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:14:06,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 98 [2022-12-14 10:14:06,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:14:06,969 INFO L225 Difference]: With dead ends: 7625 [2022-12-14 10:14:06,969 INFO L226 Difference]: Without dead ends: 3922 [2022-12-14 10:14:06,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:14:06,973 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 159 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:14:06,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 231 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:14:06,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2022-12-14 10:14:07,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3836. [2022-12-14 10:14:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3836 states, 2928 states have (on average 1.2278005464480874) internal successors, (3595), 2931 states have internal predecessors, (3595), 517 states have call successors, (517), 391 states have call predecessors, (517), 390 states have return successors, (514), 514 states have call predecessors, (514), 514 states have call successors, (514) [2022-12-14 10:14:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 4626 transitions. [2022-12-14 10:14:07,296 INFO L78 Accepts]: Start accepts. Automaton has 3836 states and 4626 transitions. Word has length 98 [2022-12-14 10:14:07,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:14:07,296 INFO L495 AbstractCegarLoop]: Abstraction has 3836 states and 4626 transitions. [2022-12-14 10:14:07,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 10:14:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3836 states and 4626 transitions. [2022-12-14 10:14:07,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 10:14:07,297 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:14:07,298 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:14:07,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 10:14:07,298 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:14:07,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:14:07,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1359641630, now seen corresponding path program 1 times [2022-12-14 10:14:07,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:14:07,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319465146] [2022-12-14 10:14:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:07,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:14:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:07,341 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 10:14:07,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:14:07,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319465146] [2022-12-14 10:14:07,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319465146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:14:07,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:14:07,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:14:07,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806001742] [2022-12-14 10:14:07,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:14:07,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:14:07,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:14:07,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:14:07,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:14:07,343 INFO L87 Difference]: Start difference. First operand 3836 states and 4626 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 10:14:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:14:08,121 INFO L93 Difference]: Finished difference Result 8288 states and 10404 transitions. [2022-12-14 10:14:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:14:08,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2022-12-14 10:14:08,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:14:08,132 INFO L225 Difference]: With dead ends: 8288 [2022-12-14 10:14:08,132 INFO L226 Difference]: Without dead ends: 6001 [2022-12-14 10:14:08,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:14:08,136 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 260 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:14:08,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 488 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:14:08,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2022-12-14 10:14:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 4162. [2022-12-14 10:14:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4162 states, 3176 states have (on average 1.223866498740554) internal successors, (3887), 3179 states have internal predecessors, (3887), 561 states have call successors, (561), 425 states have call predecessors, (561), 424 states have return successors, (558), 558 states have call predecessors, (558), 558 states have call successors, (558) [2022-12-14 10:14:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 5006 transitions. [2022-12-14 10:14:08,476 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 5006 transitions. Word has length 99 [2022-12-14 10:14:08,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:14:08,477 INFO L495 AbstractCegarLoop]: Abstraction has 4162 states and 5006 transitions. [2022-12-14 10:14:08,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 10:14:08,477 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 5006 transitions. [2022-12-14 10:14:08,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-14 10:14:08,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:14:08,478 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:14:08,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 10:14:08,478 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:14:08,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:14:08,479 INFO L85 PathProgramCache]: Analyzing trace with hash -794634938, now seen corresponding path program 1 times [2022-12-14 10:14:08,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:14:08,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63622949] [2022-12-14 10:14:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:08,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:14:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:08,646 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 10:14:08,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:14:08,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63622949] [2022-12-14 10:14:08,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63622949] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:14:08,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295481982] [2022-12-14 10:14:08,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:08,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:08,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:14:08,648 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:14:08,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 10:14:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:08,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:14:08,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:14:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-14 10:14:08,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:14:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-14 10:14:08,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295481982] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:14:08,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [832468251] [2022-12-14 10:14:08,860 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-12-14 10:14:08,860 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:14:08,861 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:14:08,861 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:14:08,861 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:14:10,780 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 109 for LOIs [2022-12-14 10:14:10,798 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 117 for LOIs [2022-12-14 10:14:10,817 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 117 for LOIs [2022-12-14 10:14:10,837 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 44 for LOIs [2022-12-14 10:14:10,841 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 44 for LOIs [2022-12-14 10:14:10,938 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:14:14,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [832468251] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:14:14,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:14:14,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [12, 4, 5] total 46 [2022-12-14 10:14:14,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960998575] [2022-12-14 10:14:14,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:14:14,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-14 10:14:14,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:14:14,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-14 10:14:14,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1817, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 10:14:14,963 INFO L87 Difference]: Start difference. First operand 4162 states and 5006 transitions. Second operand has 33 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 10:14:25,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:14:25,730 INFO L93 Difference]: Finished difference Result 6427 states and 7780 transitions. [2022-12-14 10:14:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-12-14 10:14:25,731 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 100 [2022-12-14 10:14:25,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:14:25,738 INFO L225 Difference]: With dead ends: 6427 [2022-12-14 10:14:25,738 INFO L226 Difference]: Without dead ends: 4274 [2022-12-14 10:14:25,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 263 SyntacticMatches, 7 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4467 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=1287, Invalid=12285, Unknown=0, NotChecked=0, Total=13572 [2022-12-14 10:14:25,744 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 237 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:14:25,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 945 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 10:14:25,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2022-12-14 10:14:26,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4100. [2022-12-14 10:14:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 3128 states have (on average 1.2196291560102301) internal successors, (3815), 3131 states have internal predecessors, (3815), 553 states have call successors, (553), 419 states have call predecessors, (553), 418 states have return successors, (552), 550 states have call predecessors, (552), 550 states have call successors, (552) [2022-12-14 10:14:26,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 4920 transitions. [2022-12-14 10:14:26,117 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 4920 transitions. Word has length 100 [2022-12-14 10:14:26,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:14:26,118 INFO L495 AbstractCegarLoop]: Abstraction has 4100 states and 4920 transitions. [2022-12-14 10:14:26,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 10:14:26,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 4920 transitions. [2022-12-14 10:14:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-14 10:14:26,119 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:14:26,119 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:14:26,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 10:14:26,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:26,320 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:14:26,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:14:26,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1007634046, now seen corresponding path program 1 times [2022-12-14 10:14:26,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:14:26,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585340550] [2022-12-14 10:14:26,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:26,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:14:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 10:14:26,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:14:26,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585340550] [2022-12-14 10:14:26,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585340550] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:14:26,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463572743] [2022-12-14 10:14:26,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:26,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:26,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:14:26,490 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:14:26,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 10:14:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:26,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 10:14:26,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:14:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:14:26,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:14:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 10:14:26,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463572743] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:14:26,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1099582969] [2022-12-14 10:14:26,730 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-12-14 10:14:26,730 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:14:26,730 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:14:26,730 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:14:26,731 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:14:28,752 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-12-14 10:14:28,768 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-12-14 10:14:28,785 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-12-14 10:14:28,802 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-12-14 10:14:28,805 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-12-14 10:14:28,895 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:14:32,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1099582969] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:14:32,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:14:32,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [12, 4, 5] total 47 [2022-12-14 10:14:32,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583381432] [2022-12-14 10:14:32,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:14:32,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 10:14:32,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:14:32,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 10:14:32,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1862, Unknown=0, NotChecked=0, Total=2162 [2022-12-14 10:14:32,292 INFO L87 Difference]: Start difference. First operand 4100 states and 4920 transitions. Second operand has 34 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 10:14:34,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:14:34,065 INFO L93 Difference]: Finished difference Result 6763 states and 8117 transitions. [2022-12-14 10:14:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-14 10:14:34,066 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 100 [2022-12-14 10:14:34,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:14:34,072 INFO L225 Difference]: With dead ends: 6763 [2022-12-14 10:14:34,072 INFO L226 Difference]: Without dead ends: 4150 [2022-12-14 10:14:34,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 260 SyntacticMatches, 9 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=491, Invalid=3291, Unknown=0, NotChecked=0, Total=3782 [2022-12-14 10:14:34,076 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 59 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:14:34,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 407 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 10:14:34,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2022-12-14 10:14:34,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 4109. [2022-12-14 10:14:34,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 3137 states have (on average 1.2193178195728402) internal successors, (3825), 3140 states have internal predecessors, (3825), 553 states have call successors, (553), 419 states have call predecessors, (553), 418 states have return successors, (552), 550 states have call predecessors, (552), 550 states have call successors, (552) [2022-12-14 10:14:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 4930 transitions. [2022-12-14 10:14:34,435 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 4930 transitions. Word has length 100 [2022-12-14 10:14:34,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:14:34,435 INFO L495 AbstractCegarLoop]: Abstraction has 4109 states and 4930 transitions. [2022-12-14 10:14:34,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 10:14:34,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 4930 transitions. [2022-12-14 10:14:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-14 10:14:34,436 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:14:34,436 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:14:34,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 10:14:34,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:34,637 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:14:34,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:14:34,638 INFO L85 PathProgramCache]: Analyzing trace with hash -850405934, now seen corresponding path program 1 times [2022-12-14 10:14:34,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:14:34,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618043300] [2022-12-14 10:14:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:34,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:14:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 10:14:34,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:14:34,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618043300] [2022-12-14 10:14:34,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618043300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:14:34,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:14:34,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:14:34,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514885402] [2022-12-14 10:14:34,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:14:34,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:14:34,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:14:34,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:14:34,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:14:34,699 INFO L87 Difference]: Start difference. First operand 4109 states and 4930 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 10:14:35,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:14:35,124 INFO L93 Difference]: Finished difference Result 6555 states and 7921 transitions. [2022-12-14 10:14:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:14:35,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-12-14 10:14:35,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:14:35,131 INFO L225 Difference]: With dead ends: 6555 [2022-12-14 10:14:35,131 INFO L226 Difference]: Without dead ends: 2946 [2022-12-14 10:14:35,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:14:35,139 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 72 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:14:35,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 229 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:14:35,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2022-12-14 10:14:35,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2503. [2022-12-14 10:14:35,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 1879 states have (on average 1.2038318254390634) internal successors, (2262), 1886 states have internal predecessors, (2262), 360 states have call successors, (360), 259 states have call predecessors, (360), 263 states have return successors, (380), 358 states have call predecessors, (380), 358 states have call successors, (380) [2022-12-14 10:14:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 3002 transitions. [2022-12-14 10:14:35,412 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 3002 transitions. Word has length 102 [2022-12-14 10:14:35,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:14:35,413 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 3002 transitions. [2022-12-14 10:14:35,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 10:14:35,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 3002 transitions. [2022-12-14 10:14:35,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-14 10:14:35,414 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:14:35,414 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:14:35,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 10:14:35,415 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:14:35,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:14:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2110475474, now seen corresponding path program 1 times [2022-12-14 10:14:35,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:14:35,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11128718] [2022-12-14 10:14:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:35,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:14:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 10:14:35,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:14:35,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11128718] [2022-12-14 10:14:35,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11128718] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:14:35,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335148945] [2022-12-14 10:14:35,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:35,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:35,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:14:35,576 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:14:35,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 10:14:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:35,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:14:35,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:14:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:14:35,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:14:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 10:14:35,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335148945] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:14:35,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [715203816] [2022-12-14 10:14:35,786 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-12-14 10:14:35,786 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:14:35,786 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:14:35,787 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:14:35,787 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:14:38,301 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-12-14 10:14:38,316 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-12-14 10:14:38,334 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-12-14 10:14:38,351 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-12-14 10:14:38,354 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-12-14 10:14:38,438 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:14:45,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [715203816] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:14:45,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:14:45,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [12, 5, 6] total 50 [2022-12-14 10:14:45,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014878923] [2022-12-14 10:14:45,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:14:45,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-14 10:14:45,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:14:45,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-14 10:14:45,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2176, Unknown=0, NotChecked=0, Total=2450 [2022-12-14 10:14:45,249 INFO L87 Difference]: Start difference. First operand 2503 states and 3002 transitions. Second operand has 36 states, 32 states have (on average 1.5) internal successors, (48), 31 states have internal predecessors, (48), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 10:14:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:14:48,496 INFO L93 Difference]: Finished difference Result 3748 states and 4521 transitions. [2022-12-14 10:14:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 10:14:48,497 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 1.5) internal successors, (48), 31 states have internal predecessors, (48), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 101 [2022-12-14 10:14:48,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:14:48,501 INFO L225 Difference]: With dead ends: 3748 [2022-12-14 10:14:48,501 INFO L226 Difference]: Without dead ends: 2480 [2022-12-14 10:14:48,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 254 SyntacticMatches, 15 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=451, Invalid=3709, Unknown=0, NotChecked=0, Total=4160 [2022-12-14 10:14:48,504 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 46 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:14:48,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 643 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 10:14:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2022-12-14 10:14:48,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2433. [2022-12-14 10:14:48,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 1827 states have (on average 1.2014230979748222) internal successors, (2195), 1834 states have internal predecessors, (2195), 350 states have call successors, (350), 251 states have call predecessors, (350), 255 states have return successors, (370), 348 states have call predecessors, (370), 348 states have call successors, (370) [2022-12-14 10:14:48,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 2915 transitions. [2022-12-14 10:14:48,767 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 2915 transitions. Word has length 101 [2022-12-14 10:14:48,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:14:48,767 INFO L495 AbstractCegarLoop]: Abstraction has 2433 states and 2915 transitions. [2022-12-14 10:14:48,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 1.5) internal successors, (48), 31 states have internal predecessors, (48), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 10:14:48,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 2915 transitions. [2022-12-14 10:14:48,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 10:14:48,768 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:14:48,768 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:14:48,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 10:14:48,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:48,969 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:14:48,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:14:48,970 INFO L85 PathProgramCache]: Analyzing trace with hash 422038967, now seen corresponding path program 1 times [2022-12-14 10:14:48,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:14:48,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174396865] [2022-12-14 10:14:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:48,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:14:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 10:14:49,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:14:49,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174396865] [2022-12-14 10:14:49,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174396865] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:14:49,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487865277] [2022-12-14 10:14:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:49,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:49,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:14:49,049 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:14:49,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 10:14:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:49,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:14:49,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:14:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 10:14:49,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:14:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 10:14:49,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487865277] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:14:49,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1530649439] [2022-12-14 10:14:49,451 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-12-14 10:14:49,451 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:14:49,452 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:14:49,452 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:14:49,452 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:14:55,135 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 53 for LOIs [2022-12-14 10:14:55,139 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 70 for LOIs [2022-12-14 10:14:55,146 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 67 for LOIs [2022-12-14 10:14:55,152 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 67 for LOIs [2022-12-14 10:14:55,159 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 41 for LOIs [2022-12-14 10:14:55,162 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 67 for LOIs [2022-12-14 10:14:55,268 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:15:01,637 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '233901#(and (<= 0 ~data_0~0) (<= ~C_1_pc~0 1) (= ~e~0 0) (<= 0 ~i~0) (= ~P_1_ev~0 0) (= ~P_1_st~0 1) (= ~C_1_pr~0 0) (= ~max_loop~0 2) (= ~P_1_i~0 1) (<= ~timer~0 1) (<= 0 ~P_1_pc~0) (= |#NULL.offset| 0) (<= 0 ~C_1_pc~0) (<= 0 ~timer~0) (not (= ~num~0 0)) (<= 0 ~num~0) (= ~C_1_ev~0 0) (<= 0 |#StackHeapBarrier|) (= ~data_1~0 0) (not (= ~num~0 1)) (< ~i~0 ~max_loop~0) (= ~C_1_i~0 1) (= |#NULL.base| 0))' at error location [2022-12-14 10:15:01,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:15:01,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:15:01,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 5 [2022-12-14 10:15:01,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610780106] [2022-12-14 10:15:01,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:15:01,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:15:01,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:01,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:15:01,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1458, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 10:15:01,639 INFO L87 Difference]: Start difference. First operand 2433 states and 2915 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 10:15:02,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:02,283 INFO L93 Difference]: Finished difference Result 4669 states and 5817 transitions. [2022-12-14 10:15:02,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:15:02,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 103 [2022-12-14 10:15:02,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:02,288 INFO L225 Difference]: With dead ends: 4669 [2022-12-14 10:15:02,288 INFO L226 Difference]: Without dead ends: 3200 [2022-12-14 10:15:02,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 254 SyntacticMatches, 19 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=190, Invalid=1616, Unknown=0, NotChecked=0, Total=1806 [2022-12-14 10:15:02,290 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 119 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:02,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 559 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:15:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2022-12-14 10:15:02,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 2357. [2022-12-14 10:15:02,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 1769 states have (on average 1.1978518937252685) internal successors, (2119), 1776 states have internal predecessors, (2119), 340 states have call successors, (340), 243 states have call predecessors, (340), 247 states have return successors, (359), 338 states have call predecessors, (359), 338 states have call successors, (359) [2022-12-14 10:15:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 2818 transitions. [2022-12-14 10:15:02,535 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 2818 transitions. Word has length 103 [2022-12-14 10:15:02,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:02,535 INFO L495 AbstractCegarLoop]: Abstraction has 2357 states and 2818 transitions. [2022-12-14 10:15:02,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 10:15:02,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 2818 transitions. [2022-12-14 10:15:02,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-14 10:15:02,536 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:02,536 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:02,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-14 10:15:02,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-14 10:15:02,738 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:02,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:02,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1455806300, now seen corresponding path program 1 times [2022-12-14 10:15:02,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:02,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501367400] [2022-12-14 10:15:02,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 10:15:02,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:15:02,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501367400] [2022-12-14 10:15:02,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501367400] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:15:02,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899767448] [2022-12-14 10:15:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:02,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:02,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:02,933 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:02,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 10:15:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:03,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:15:03,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:03,098 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 10:15:03,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:15:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-14 10:15:03,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899767448] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:15:03,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [601349] [2022-12-14 10:15:03,167 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-12-14 10:15:03,167 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:15:03,167 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:15:03,167 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:15:03,167 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:15:05,329 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 73 for LOIs [2022-12-14 10:15:05,336 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-12-14 10:15:05,352 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-12-14 10:15:05,368 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-12-14 10:15:05,385 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-12-14 10:15:05,388 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-12-14 10:15:05,475 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:15:12,375 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '244944#(and (<= 0 ~data_0~0) (= ~i~0 0) (= ~e~0 0) (= ~P_1_ev~0 0) (= ~C_1_pr~0 0) (= ~max_loop~0 2) (= ~P_1_i~0 1) (= ~C_1_pc~0 0) (<= 0 ~data_1~0) (<= 0 ~P_1_pc~0) (= |#NULL.offset| 0) (not (= ~num~0 0)) (<= 0 ~num~0) (= ~C_1_ev~0 0) (<= 0 |#StackHeapBarrier|) (not (= ~num~0 1)) (= ~timer~0 0) (= ~C_1_st~0 1) (= ~C_1_i~0 1) (= |#NULL.base| 0))' at error location [2022-12-14 10:15:12,375 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:15:12,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:15:12,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 6] total 16 [2022-12-14 10:15:12,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403319981] [2022-12-14 10:15:12,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:15:12,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 10:15:12,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:12,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 10:15:12,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=2386, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 10:15:12,377 INFO L87 Difference]: Start difference. First operand 2357 states and 2818 transitions. Second operand has 16 states, 14 states have (on average 10.357142857142858) internal successors, (145), 14 states have internal predecessors, (145), 6 states have call successors, (39), 6 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 6 states have call successors, (39) [2022-12-14 10:15:15,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:15,168 INFO L93 Difference]: Finished difference Result 5787 states and 7176 transitions. [2022-12-14 10:15:15,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-12-14 10:15:15,169 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 10.357142857142858) internal successors, (145), 14 states have internal predecessors, (145), 6 states have call successors, (39), 6 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 6 states have call successors, (39) Word has length 110 [2022-12-14 10:15:15,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:15,173 INFO L225 Difference]: With dead ends: 5787 [2022-12-14 10:15:15,173 INFO L226 Difference]: Without dead ends: 3438 [2022-12-14 10:15:15,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 286 SyntacticMatches, 19 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11055 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1861, Invalid=24221, Unknown=0, NotChecked=0, Total=26082 [2022-12-14 10:15:15,179 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1205 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 3371 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 3916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 3371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:15,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 2912 Invalid, 3916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 3371 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 10:15:15,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2022-12-14 10:15:15,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 2299. [2022-12-14 10:15:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1751 states have (on average 1.2135922330097086) internal successors, (2125), 1761 states have internal predecessors, (2125), 310 states have call successors, (310), 229 states have call predecessors, (310), 237 states have return successors, (344), 308 states have call predecessors, (344), 308 states have call successors, (344) [2022-12-14 10:15:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2779 transitions. [2022-12-14 10:15:15,425 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2779 transitions. Word has length 110 [2022-12-14 10:15:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:15,426 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 2779 transitions. [2022-12-14 10:15:15,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 10.357142857142858) internal successors, (145), 14 states have internal predecessors, (145), 6 states have call successors, (39), 6 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 6 states have call successors, (39) [2022-12-14 10:15:15,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2779 transitions. [2022-12-14 10:15:15,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-14 10:15:15,427 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:15,427 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:15,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-14 10:15:15,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-14 10:15:15,628 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:15,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:15,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2115846531, now seen corresponding path program 1 times [2022-12-14 10:15:15,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:15,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244388430] [2022-12-14 10:15:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:15,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 77 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-12-14 10:15:15,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:15:15,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244388430] [2022-12-14 10:15:15,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244388430] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:15:15,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421473985] [2022-12-14 10:15:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:15,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:15,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:15,776 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:15,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 10:15:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:15,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 10:15:15,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 180 proven. 13 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-14 10:15:15,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:15:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 91 proven. 11 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-12-14 10:15:16,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421473985] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:15:16,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1575603894] [2022-12-14 10:15:16,003 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-12-14 10:15:16,003 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:15:16,004 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:15:16,004 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:15:16,004 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:15:21,609 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 71 for LOIs [2022-12-14 10:15:21,616 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 106 for LOIs [2022-12-14 10:15:21,632 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 114 for LOIs [2022-12-14 10:15:21,650 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 114 for LOIs [2022-12-14 10:15:21,668 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 41 for LOIs [2022-12-14 10:15:21,672 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 122 for LOIs [2022-12-14 10:15:21,787 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:15:27,182 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '258006#(and (<= 0 ~data_0~0) (<= ~C_1_pc~0 1) (= ~e~0 0) (<= 0 ~i~0) (= ~P_1_ev~0 0) (= ~P_1_st~0 1) (= ~C_1_pr~0 0) (<= ~i~0 1) (= ~max_loop~0 2) (= ~P_1_i~0 1) (<= ~timer~0 1) (<= 0 ~data_1~0) (<= 0 ~P_1_pc~0) (= |#NULL.offset| 0) (<= 0 ~C_1_pc~0) (<= 0 ~timer~0) (<= 0 ~num~0) (= ~C_1_ev~0 0) (<= 0 |#StackHeapBarrier|) (= ~C_1_i~0 1) (= |#NULL.base| 0))' at error location [2022-12-14 10:15:27,183 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:15:27,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:15:27,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 11 [2022-12-14 10:15:27,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900800436] [2022-12-14 10:15:27,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:15:27,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 10:15:27,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 10:15:27,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1990, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 10:15:27,184 INFO L87 Difference]: Start difference. First operand 2299 states and 2779 transitions. Second operand has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 7 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) [2022-12-14 10:15:27,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:27,990 INFO L93 Difference]: Finished difference Result 7211 states and 8955 transitions. [2022-12-14 10:15:27,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 10:15:27,991 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 7 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) Word has length 158 [2022-12-14 10:15:27,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:27,998 INFO L225 Difference]: With dead ends: 7211 [2022-12-14 10:15:27,998 INFO L226 Difference]: Without dead ends: 4865 [2022-12-14 10:15:28,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 433 SyntacticMatches, 13 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1763 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=410, Invalid=3622, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 10:15:28,001 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 425 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:28,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 561 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:15:28,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2022-12-14 10:15:28,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 2721. [2022-12-14 10:15:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 1998 states have (on average 1.1881881881881882) internal successors, (2374), 2047 states have internal predecessors, (2374), 403 states have call successors, (403), 272 states have call predecessors, (403), 319 states have return successors, (629), 401 states have call predecessors, (629), 401 states have call successors, (629) [2022-12-14 10:15:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3406 transitions. [2022-12-14 10:15:28,344 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3406 transitions. Word has length 158 [2022-12-14 10:15:28,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:28,344 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 3406 transitions. [2022-12-14 10:15:28,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 7 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) [2022-12-14 10:15:28,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3406 transitions. [2022-12-14 10:15:28,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-12-14 10:15:28,348 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:28,348 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:28,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 10:15:28,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:28,549 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:28,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:28,550 INFO L85 PathProgramCache]: Analyzing trace with hash -373775186, now seen corresponding path program 1 times [2022-12-14 10:15:28,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:28,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71054700] [2022-12-14 10:15:28,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:28,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 84 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 10:15:28,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:15:28,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71054700] [2022-12-14 10:15:28,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71054700] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:15:28,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495814481] [2022-12-14 10:15:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:28,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:28,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:28,682 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:28,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 10:15:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:28,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 10:15:28,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:28,800 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-14 10:15:28,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:15:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-12-14 10:15:28,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495814481] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 10:15:28,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:15:28,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 7 [2022-12-14 10:15:28,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899102735] [2022-12-14 10:15:28,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:15:28,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:15:28,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:28,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:15:28,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:15:28,862 INFO L87 Difference]: Start difference. First operand 2721 states and 3406 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-14 10:15:29,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:29,248 INFO L93 Difference]: Finished difference Result 5382 states and 6780 transitions. [2022-12-14 10:15:29,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:15:29,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 169 [2022-12-14 10:15:29,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:29,253 INFO L225 Difference]: With dead ends: 5382 [2022-12-14 10:15:29,253 INFO L226 Difference]: Without dead ends: 2826 [2022-12-14 10:15:29,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:15:29,257 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 75 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:29,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 150 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:15:29,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2022-12-14 10:15:29,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2692. [2022-12-14 10:15:29,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2004 states have (on average 1.1651696606786428) internal successors, (2335), 2032 states have internal predecessors, (2335), 374 states have call successors, (374), 287 states have call predecessors, (374), 313 states have return successors, (426), 372 states have call predecessors, (426), 372 states have call successors, (426) [2022-12-14 10:15:29,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 3135 transitions. [2022-12-14 10:15:29,565 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 3135 transitions. Word has length 169 [2022-12-14 10:15:29,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:29,565 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 3135 transitions. [2022-12-14 10:15:29,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-14 10:15:29,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 3135 transitions. [2022-12-14 10:15:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-12-14 10:15:29,566 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:29,567 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:29,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 10:15:29,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 10:15:29,767 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:29,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:29,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1511090013, now seen corresponding path program 1 times [2022-12-14 10:15:29,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:29,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428988322] [2022-12-14 10:15:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:29,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:15:29,780 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:15:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:15:29,832 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 10:15:29,832 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:15:29,833 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 10:15:29,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 10:15:29,837 INFO L445 BasicCegarLoop]: Path program 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] [2022-12-14 10:15:29,840 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:15:29,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:15:29 BoogieIcfgContainer [2022-12-14 10:15:29,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:15:29,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:15:29,919 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:15:29,919 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:15:29,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:13:47" (3/4) ... [2022-12-14 10:15:29,920 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 10:15:30,007 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 10:15:30,007 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:15:30,008 INFO L158 Benchmark]: Toolchain (without parser) took 103294.88ms. Allocated memory was 169.9MB in the beginning and 994.1MB in the end (delta: 824.2MB). Free memory was 137.2MB in the beginning and 562.6MB in the end (delta: -425.3MB). Peak memory consumption was 401.8MB. Max. memory is 16.1GB. [2022-12-14 10:15:30,008 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 142.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:15:30,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.46ms. Allocated memory is still 169.9MB. Free memory was 137.2MB in the beginning and 123.9MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 10:15:30,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.08ms. Allocated memory is still 169.9MB. Free memory was 123.9MB in the beginning and 121.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:15:30,009 INFO L158 Benchmark]: Boogie Preprocessor took 25.47ms. Allocated memory is still 169.9MB. Free memory was 121.8MB in the beginning and 120.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:15:30,009 INFO L158 Benchmark]: RCFGBuilder took 430.68ms. Allocated memory is still 169.9MB. Free memory was 120.3MB in the beginning and 93.4MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 10:15:30,009 INFO L158 Benchmark]: TraceAbstraction took 102458.59ms. Allocated memory was 169.9MB in the beginning and 994.1MB in the end (delta: 824.2MB). Free memory was 92.4MB in the beginning and 578.3MB in the end (delta: -485.9MB). Peak memory consumption was 338.9MB. Max. memory is 16.1GB. [2022-12-14 10:15:30,010 INFO L158 Benchmark]: Witness Printer took 88.85ms. Allocated memory is still 994.1MB. Free memory was 578.3MB in the beginning and 562.6MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 10:15:30,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 142.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.46ms. Allocated memory is still 169.9MB. Free memory was 137.2MB in the beginning and 123.9MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.08ms. Allocated memory is still 169.9MB. Free memory was 123.9MB in the beginning and 121.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.47ms. Allocated memory is still 169.9MB. Free memory was 121.8MB in the beginning and 120.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 430.68ms. Allocated memory is still 169.9MB. Free memory was 120.3MB in the beginning and 93.4MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 102458.59ms. Allocated memory was 169.9MB in the beginning and 994.1MB in the end (delta: 824.2MB). Free memory was 92.4MB in the beginning and 578.3MB in the end (delta: -485.9MB). Peak memory consumption was 338.9MB. Max. memory is 16.1GB. * Witness Printer took 88.85ms. Allocated memory is still 994.1MB. Free memory was 578.3MB in the beginning and 562.6MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. 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 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int max_loop ; [L26] int num ; [L27] int i ; [L28] int e ; [L29] int timer ; [L30] char data_0 ; [L31] char data_1 ; [L74] int P_1_pc; [L75] int P_1_st ; [L76] int P_1_i ; [L77] int P_1_ev ; [L132] int C_1_pc ; [L133] int C_1_st ; [L134] int C_1_i ; [L135] int C_1_ev ; [L136] int C_1_pr ; [L500] int count ; [L501] int __retres2 ; [L505] num = 0 [L506] i = 0 [L507] max_loop = 2 [L509] timer = 0 [L510] P_1_pc = 0 [L511] C_1_pc = 0 [L513] count = 0 [L514] CALL init_model() [L493] P_1_i = 1 [L494] C_1_i = 1 [L514] RET init_model() [L515] CALL start_simulation() [L431] int kernel_st ; [L432] int tmp ; [L433] int tmp___0 ; [L437] kernel_st = 0 VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L438] FCALL update_channels() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L439] CALL init_threads() [L236] COND TRUE (int )P_1_i == 1 [L237] P_1_st = 0 [L241] COND TRUE (int )C_1_i == 1 [L242] C_1_st = 0 [L439] RET init_threads() [L440] FCALL fire_delta_events() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L441] CALL activate_threads() VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L117] COND FALSE !((int )P_1_pc == 1) VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L127] __retres1 = 0 VAL [\old(C_1_st)=0, \old(P_1_st)=0, __retres1=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND FALSE !(\read(tmp)) [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L199] COND FALSE !((int )C_1_pc == 1) VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L219] __retres1 = 0 VAL [\old(C_1_st)=0, \old(P_1_st)=0, __retres1=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L441] RET activate_threads() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L442] FCALL reset_delta_events() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L445] COND TRUE 1 [L448] kernel_st = 1 [L449] CALL eval() [L272] int tmp ; [L273] int tmp___0 ; [L274] int tmp___1 ; [L275] int tmp___2 ; VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L279] COND TRUE 1 VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, exists_runnable_thread()=1, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L282] tmp___2 = exists_runnable_thread() [L284] COND TRUE \read(tmp___2) VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0, tmp___2=1] [L289] COND TRUE (int )P_1_st == 0 [L291] tmp = __VERIFIER_nondet_int() [L293] COND FALSE !(\read(tmp)) VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0, tmp=0, tmp___2=1] [L304] COND TRUE (int )C_1_st == 0 [L306] tmp___1 = __VERIFIER_nondet_int() [L308] COND TRUE \read(tmp___1) [L310] C_1_st = 1 [L311] CALL C_1() [L138] char c ; VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=1, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L141] COND TRUE (int )C_1_pc == 0 VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=1, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L156] COND TRUE i < max_loop VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=1, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L158] COND TRUE num == 0 [L159] timer = 1 [L160] i += 1 [L161] C_1_pc = 1 [L162] C_1_st = 2 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1] [L311] RET C_1() [L279] COND TRUE 1 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1, tmp=0, tmp___1=-1, tmp___2=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1, tmp=0, tmp___1=-1, tmp___2=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND TRUE \read(tmp___2) VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1, tmp=0, tmp___1=-1, tmp___2=1] [L289] COND TRUE (int )P_1_st == 0 [L291] tmp = __VERIFIER_nondet_int() [L293] COND TRUE \read(tmp) [L295] P_1_st = 1 [L296] CALL P_1() [L82] COND TRUE (int )P_1_pc == 0 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=1, timer=1] [L93] COND TRUE i < max_loop [L96] CALL write_data(num, 'A') [L59] COND TRUE i___0 == 0 [L60] data_0 = c VAL [\old(c)=65, \old(i___0)=0, c=65, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, i___0=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=1, timer=1] [L96] RET write_data(num, 'A') [L97] num += 1 [L98] P_1_pc = 1 [L99] P_1_st = 2 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L296] RET P_1() [L304] COND FALSE !((int )C_1_st == 0) VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-2, tmp___1=-1, tmp___2=1] [L279] COND TRUE 1 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-2, tmp___1=-1, tmp___2=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L251] int __retres1 ; [L254] COND FALSE !((int )P_1_st == 0) [L258] COND FALSE !((int )C_1_st == 0) [L266] __retres1 = 0 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, exists_runnable_thread()=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-2, tmp___1=-1, tmp___2=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND FALSE !(\read(tmp___2)) VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-2, tmp___1=-1, tmp___2=0] [L449] RET eval() [L452] kernel_st = 2 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=2, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L453] FCALL update_channels() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=2, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L456] kernel_st = 3 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L457] FCALL fire_delta_events() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L458] CALL activate_threads() VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L117] COND TRUE (int )P_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L118] COND FALSE !((int )P_1_ev == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L127] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND FALSE !(\read(tmp)) [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L199] COND TRUE (int )C_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L200] COND FALSE !((int )e == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L219] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L458] RET activate_threads() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L459] FCALL reset_delta_events() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L462] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L251] int __retres1 ; [L254] COND FALSE !((int )P_1_st == 0) [L258] COND FALSE !((int )C_1_st == 0) [L266] __retres1 = 0 [L268] return (__retres1); [L462] RET, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, exists_runnable_thread()=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L462] tmp = exists_runnable_thread() [L464] COND TRUE tmp == 0 [L466] kernel_st = 4 [L467] CALL fire_time_events() [L346] C_1_ev = 1 [L348] P_1_ev = 1 [L467] RET fire_time_events() [L468] CALL activate_threads() VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L117] COND TRUE (int )P_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L118] COND TRUE (int )P_1_ev == 1 [L119] __retres1 = 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=1, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND TRUE \read(tmp) [L384] P_1_st = 0 [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L199] COND TRUE (int )C_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L200] COND FALSE !((int )e == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L219] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L468] RET activate_threads() VAL [C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=4, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp=0] [L469] CALL reset_time_events() [L360] COND TRUE (int )P_1_ev == 1 [L361] P_1_ev = 2 [L365] COND TRUE (int )C_1_ev == 1 [L366] C_1_ev = 2 [L469] RET reset_time_events() [L475] CALL, EXPR stop_simulation() [L412] int tmp ; [L413] int __retres2 ; VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L417] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L417] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L417] tmp = exists_runnable_thread() [L419] COND TRUE \read(tmp) [L420] __retres2 = 0 [L427] return (__retres2); [L475] RET, EXPR stop_simulation() [L475] tmp___0 = stop_simulation() [L477] COND FALSE !(\read(tmp___0)) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=4, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp=0, tmp___0=0] [L445] COND TRUE 1 [L448] kernel_st = 1 [L449] CALL eval() [L272] int tmp ; [L273] int tmp___0 ; [L274] int tmp___1 ; [L275] int tmp___2 ; VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L279] COND TRUE 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND TRUE \read(tmp___2) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp___2=1] [L289] COND TRUE (int )P_1_st == 0 [L291] tmp = __VERIFIER_nondet_int() [L293] COND TRUE \read(tmp) [L295] P_1_st = 1 [L296] CALL P_1() [L82] COND FALSE !((int )P_1_pc == 0) [L85] COND TRUE (int )P_1_pc == 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L93] COND TRUE i < max_loop [L96] CALL write_data(num, 'A') [L59] COND FALSE !(i___0 == 0) VAL [\old(c)=65, \old(i___0)=1, c=65, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, i___0=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L62] COND TRUE i___0 == 1 [L63] data_1 = c VAL [\old(c)=65, \old(i___0)=1, c=65, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, i___0=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L96] RET write_data(num, 'A') [L97] num += 1 [L98] P_1_pc = 1 [L99] P_1_st = 2 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L296] RET P_1() [L304] COND FALSE !((int )C_1_st == 0) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-3, tmp___2=1] [L279] COND TRUE 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-3, tmp___2=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L251] int __retres1 ; [L254] COND FALSE !((int )P_1_st == 0) [L258] COND FALSE !((int )C_1_st == 0) [L266] __retres1 = 0 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, exists_runnable_thread()=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-3, tmp___2=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND FALSE !(\read(tmp___2)) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-3, tmp___2=0] [L449] RET eval() [L452] kernel_st = 2 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=2, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L453] FCALL update_channels() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=2, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L456] kernel_st = 3 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L457] FCALL fire_delta_events() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L458] CALL activate_threads() VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L117] COND TRUE (int )P_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L118] COND FALSE !((int )P_1_ev == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L127] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND FALSE !(\read(tmp)) [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L199] COND TRUE (int )C_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L200] COND FALSE !((int )e == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L219] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L458] RET activate_threads() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L459] FCALL reset_delta_events() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L462] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L251] int __retres1 ; [L254] COND FALSE !((int )P_1_st == 0) [L258] COND FALSE !((int )C_1_st == 0) [L266] __retres1 = 0 [L268] return (__retres1); [L462] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, exists_runnable_thread()=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L462] tmp = exists_runnable_thread() [L464] COND TRUE tmp == 0 [L466] kernel_st = 4 [L467] CALL fire_time_events() [L346] C_1_ev = 1 [L348] P_1_ev = 1 [L467] RET fire_time_events() [L468] CALL activate_threads() VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L117] COND TRUE (int )P_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L118] COND TRUE (int )P_1_ev == 1 [L119] __retres1 = 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=1, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND TRUE \read(tmp) [L384] P_1_st = 0 [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L199] COND TRUE (int )C_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L200] COND FALSE !((int )e == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L219] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L468] RET activate_threads() VAL [C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=4, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp=0, tmp___0=0] [L469] CALL reset_time_events() [L360] COND TRUE (int )P_1_ev == 1 [L361] P_1_ev = 2 [L365] COND TRUE (int )C_1_ev == 1 [L366] C_1_ev = 2 [L469] RET reset_time_events() [L475] CALL, EXPR stop_simulation() [L412] int tmp ; [L413] int __retres2 ; VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L417] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L417] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L417] tmp = exists_runnable_thread() [L419] COND TRUE \read(tmp) [L420] __retres2 = 0 [L427] return (__retres2); [L475] RET, EXPR stop_simulation() [L475] tmp___0 = stop_simulation() [L477] COND FALSE !(\read(tmp___0)) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=4, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp=0, tmp___0=0] [L445] COND TRUE 1 [L448] kernel_st = 1 [L449] CALL eval() [L272] int tmp ; [L273] int tmp___0 ; [L274] int tmp___1 ; [L275] int tmp___2 ; VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L279] COND TRUE 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND TRUE \read(tmp___2) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp___2=1] [L289] COND TRUE (int )P_1_st == 0 [L291] tmp = __VERIFIER_nondet_int() [L293] COND TRUE \read(tmp) [L295] P_1_st = 1 [L296] CALL P_1() [L82] COND FALSE !((int )P_1_pc == 0) [L85] COND TRUE (int )P_1_pc == 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L93] COND TRUE i < max_loop [L96] CALL write_data(num, 'A') [L59] COND FALSE !(i___0 == 0) VAL [\old(c)=65, \old(i___0)=2, c=65, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, i___0=2, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L62] COND FALSE !(i___0 == 1) VAL [\old(c)=65, \old(i___0)=2, c=65, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, i___0=2, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L66] CALL error() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L19] reach_error() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 102.3s, OverallIterations: 27, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 27.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4599 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4516 mSDsluCounter, 11396 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8063 mSDsCounter, 1168 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12900 IncrementalHoareTripleChecker+Invalid, 14068 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1168 mSolverCounterUnsat, 3333 mSDtfsCounter, 12900 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3737 GetRequests, 2988 SyntacticMatches, 89 SemanticMatches, 660 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21490 ImplicationChecksByTransitivity, 50.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6379occurred in iteration=15, InterpolantAutomatonStates: 442, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.4s AutomataMinimizationTime, 26 MinimizatonAttempts, 9208 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 3928 NumberOfCodeBlocks, 3928 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 4627 ConstructedInterpolants, 0 QuantifiedInterpolants, 10212 SizeOfPredicates, 23 NumberOfNonLiveVariables, 5150 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 49 InterpolantComputations, 19 PerfectInterpolantSequences, 3000/3623 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: OVERALL_TIME: 9.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 24, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 362, DAG_INTERPRETER_EARLY_EXITS: 4, TOOLS_POST_APPLICATIONS: 410, TOOLS_POST_TIME: 3.6s, TOOLS_POST_CALL_APPLICATIONS: 265, TOOLS_POST_CALL_TIME: 2.4s, TOOLS_POST_RETURN_APPLICATIONS: 220, TOOLS_POST_RETURN_TIME: 1.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 895, TOOLS_QUANTIFIERELIM_TIME: 6.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 981, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 280, DOMAIN_JOIN_TIME: 1.8s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 362, DOMAIN_ISBOTTOM_TIME: 0.4s, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME: 5.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 5.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 220, CALL_SUMMARIZER_CACHE_MISSES: 20, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 6395, DAG_COMPRESSION_RETAINED_NODES: 779, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-14 10:15:30,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d81967f-460a-431c-a16a-53e04386c193/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE