./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--vfio--vfio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--vfio--vfio.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI --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 64bit --witnessprinter.graph.data.programhash c63ca5a13217ab3c82769d6ebc8e69dd180f3b7d25df235b9ae7098d5fa1543b --- 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-5e519f3 [2022-11-03 02:47:01,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:47:01,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:47:01,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:47:01,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:47:01,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:47:01,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:47:01,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:47:01,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:47:01,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:47:01,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:47:01,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:47:01,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:47:01,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:47:01,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:47:01,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:47:01,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:47:01,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:47:01,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:47:01,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:47:01,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:47:01,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:47:01,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:47:01,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:47:01,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:47:01,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:47:01,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:47:01,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:47:01,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:47:01,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:47:01,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:47:01,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:47:01,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:47:01,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:47:01,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:47:01,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:47:01,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:47:01,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:47:01,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:47:01,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:47:01,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:47:01,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:47:02,043 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:47:02,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:47:02,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:47:02,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:47:02,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:47:02,046 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:47:02,047 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:47:02,047 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:47:02,047 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:47:02,047 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:47:02,048 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:47:02,049 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:47:02,049 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:47:02,049 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:47:02,049 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:47:02,050 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:47:02,050 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:47:02,050 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:47:02,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:47:02,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:47:02,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:47:02,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:47:02,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:47:02,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:47:02,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:47:02,054 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:47:02,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:47:02,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:47:02,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:47:02,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:47:02,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:47:02,056 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:47:02,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:47:02,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:47:02,057 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:47:02,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:47:02,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:47:02,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:47:02,058 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_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c63ca5a13217ab3c82769d6ebc8e69dd180f3b7d25df235b9ae7098d5fa1543b [2022-11-03 02:47:02,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:47:02,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:47:02,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:47:02,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:47:02,335 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:47:02,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--vfio--vfio.ko-entry_point.cil.out.i [2022-11-03 02:47:02,406 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/data/fa1326971/ffadc8b7922441858efc34d3224f2b78/FLAGc62461d00 [2022-11-03 02:47:03,183 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:47:03,184 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--vfio--vfio.ko-entry_point.cil.out.i [2022-11-03 02:47:03,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/data/fa1326971/ffadc8b7922441858efc34d3224f2b78/FLAGc62461d00 [2022-11-03 02:47:03,736 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/data/fa1326971/ffadc8b7922441858efc34d3224f2b78 [2022-11-03 02:47:03,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:47:03,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:47:03,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:47:03,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:47:03,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:47:03,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:47:03" (1/1) ... [2022-11-03 02:47:03,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a82799e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:03, skipping insertion in model container [2022-11-03 02:47:03,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:47:03" (1/1) ... [2022-11-03 02:47:03,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:47:03,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:47:05,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--vfio--vfio.ko-entry_point.cil.out.i[198983,198996] [2022-11-03 02:47:05,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:47:05,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:47:05,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--vfio--vfio.ko-entry_point.cil.out.i[198983,198996] [2022-11-03 02:47:05,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:47:06,062 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:47:06,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:06 WrapperNode [2022-11-03 02:47:06,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:47:06,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:47:06,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:47:06,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:47:06,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:06" (1/1) ... [2022-11-03 02:47:06,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:06" (1/1) ... [2022-11-03 02:47:06,297 INFO L138 Inliner]: procedures = 244, calls = 1516, calls flagged for inlining = 92, calls inlined = 80, statements flattened = 2942 [2022-11-03 02:47:06,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:47:06,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:47:06,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:47:06,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:47:06,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:06" (1/1) ... [2022-11-03 02:47:06,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:06" (1/1) ... [2022-11-03 02:47:06,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:06" (1/1) ... [2022-11-03 02:47:06,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:06" (1/1) ... [2022-11-03 02:47:06,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:06" (1/1) ... [2022-11-03 02:47:06,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:06" (1/1) ... [2022-11-03 02:47:06,553 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:06" (1/1) ... [2022-11-03 02:47:06,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:06" (1/1) ... [2022-11-03 02:47:06,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:47:06,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:47:06,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:47:06,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:47:06,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:06" (1/1) ... [2022-11-03 02:47:06,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:47:06,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:47:06,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:47:06,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:47:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 02:47:06,691 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 02:47:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-11-03 02:47:06,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-11-03 02:47:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-11-03 02:47:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 02:47:06,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 02:47:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 02:47:06,692 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 02:47:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fops_compat_ioctl [2022-11-03 02:47:06,692 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fops_compat_ioctl [2022-11-03 02:47:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:47:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:47:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:47:06,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:47:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:47:06,693 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:47:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_fops_read [2022-11-03 02:47:06,694 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_fops_read [2022-11-03 02:47:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_fops_compat_ioctl [2022-11-03 02:47:06,694 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_fops_compat_ioctl [2022-11-03 02:47:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 02:47:06,694 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 02:47:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:47:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:47:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_fops_release [2022-11-03 02:47:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_fops_release [2022-11-03 02:47:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_fops_open [2022-11-03 02:47:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_fops_open [2022-11-03 02:47:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-03 02:47:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-03 02:47:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_get [2022-11-03 02:47:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_get [2022-11-03 02:47:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure __vfio_group_unset_container [2022-11-03 02:47:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __vfio_group_unset_container [2022-11-03 02:47:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_fops_unl_ioctl [2022-11-03 02:47:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_fops_unl_ioctl [2022-11-03 02:47:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:47:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:47:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:47:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:47:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_fops_compat_ioctl [2022-11-03 02:47:06,698 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_fops_compat_ioctl [2022-11-03 02:47:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure fdput [2022-11-03 02:47:06,698 INFO L138 BoogieDeclarations]: Found implementation of procedure fdput [2022-11-03 02:47:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_dev_viable [2022-11-03 02:47:06,698 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_dev_viable [2022-11-03 02:47:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:47:06,699 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:47:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_fops_mmap [2022-11-03 02:47:06,700 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_fops_mmap [2022-11-03 02:47:06,701 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:47:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:47:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_put [2022-11-03 02:47:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_put [2022-11-03 02:47:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_try_dissolve_container [2022-11-03 02:47:06,703 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_try_dissolve_container [2022-11-03 02:47:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_unlock_and_free [2022-11-03 02:47:06,703 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_unlock_and_free [2022-11-03 02:47:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fops_release [2022-11-03 02:47:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fops_release [2022-11-03 02:47:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:47:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:47:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:47:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_fops_write [2022-11-03 02:47:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_fops_write [2022-11-03 02:47:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-11-03 02:47:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-11-03 02:47:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:47:06,705 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_fops_unl_ioctl [2022-11-03 02:47:06,705 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_fops_unl_ioctl [2022-11-03 02:47:06,705 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 02:47:06,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:47:06,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:47:06,705 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-03 02:47:06,705 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-03 02:47:06,705 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-03 02:47:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-03 02:47:06,706 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-11-03 02:47:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-11-03 02:47:06,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:47:06,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:47:06,707 INFO L130 BoogieDeclarations]: Found specification of procedure iommu_group_id [2022-11-03 02:47:06,708 INFO L138 BoogieDeclarations]: Found implementation of procedure iommu_group_id [2022-11-03 02:47:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_1 [2022-11-03 02:47:06,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_1 [2022-11-03 02:47:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 02:47:06,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 02:47:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 02:47:06,709 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 02:47:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-11-03 02:47:06,709 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-11-03 02:47:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 02:47:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 02:47:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:47:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:47:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:47:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:47:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:47:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure iommu_group_put [2022-11-03 02:47:06,711 INFO L138 BoogieDeclarations]: Found implementation of procedure iommu_group_put [2022-11-03 02:47:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2022-11-03 02:47:06,711 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2022-11-03 02:47:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 02:47:06,712 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 02:47:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:47:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_put [2022-11-03 02:47:06,712 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_put [2022-11-03 02:47:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-03 02:47:06,713 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-03 02:47:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put_mutex [2022-11-03 02:47:06,716 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put_mutex [2022-11-03 02:47:06,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:47:06,716 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_put_external_user [2022-11-03 02:47:06,716 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_put_external_user [2022-11-03 02:47:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_cmpxchg [2022-11-03 02:47:06,717 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_cmpxchg [2022-11-03 02:47:06,718 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:47:06,718 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:47:06,719 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fops_read [2022-11-03 02:47:06,724 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fops_read [2022-11-03 02:47:06,725 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_get [2022-11-03 02:47:06,725 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_get [2022-11-03 02:47:06,726 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-11-03 02:47:06,726 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-11-03 02:47:06,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:47:06,726 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fops_unl_ioctl [2022-11-03 02:47:06,726 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fops_unl_ioctl [2022-11-03 02:47:06,726 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 02:47:06,726 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 02:47:06,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:47:06,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:47:06,727 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-03 02:47:06,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-03 02:47:06,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:47:06,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:47:06,727 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2022-11-03 02:47:06,727 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2022-11-03 02:47:06,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:47:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:47:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:47:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fops_mmap [2022-11-03 02:47:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fops_mmap [2022-11-03 02:47:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-11-03 02:47:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-11-03 02:47:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:47:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-03 02:47:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-03 02:47:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:47:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:47:06,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:47:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_unless [2022-11-03 02:47:06,729 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_unless [2022-11-03 02:47:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2022-11-03 02:47:06,729 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2022-11-03 02:47:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fops_write [2022-11-03 02:47:06,729 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fops_write [2022-11-03 02:47:06,730 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_ioctl_check_extension [2022-11-03 02:47:06,730 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_ioctl_check_extension [2022-11-03 02:47:06,730 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_free_group_minor [2022-11-03 02:47:06,730 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_free_group_minor [2022-11-03 02:47:06,730 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 02:47:06,730 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 02:47:06,730 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 02:47:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 02:47:06,731 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-03 02:47:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-03 02:47:06,731 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_get_device [2022-11-03 02:47:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_get_device [2022-11-03 02:47:06,731 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:47:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:47:06,731 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-03 02:47:06,732 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-03 02:47:06,732 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_container_put [2022-11-03 02:47:06,732 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_container_put [2022-11-03 02:47:06,732 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:47:06,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:47:06,732 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-03 02:47:06,732 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-03 02:47:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:47:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 02:47:06,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 02:47:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_viable [2022-11-03 02:47:06,733 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_viable [2022-11-03 02:47:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_ioctl_set_iommu [2022-11-03 02:47:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_ioctl_set_iommu [2022-11-03 02:47:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fops_open [2022-11-03 02:47:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fops_open [2022-11-03 02:47:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_fops_release [2022-11-03 02:47:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_fops_release [2022-11-03 02:47:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:47:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:47:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:47:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:47:07,535 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:47:07,539 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:47:07,747 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:47:09,793 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:47:10,282 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:47:10,282 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:47:10,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:47:10 BoogieIcfgContainer [2022-11-03 02:47:10,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:47:10,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:47:10,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:47:10,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:47:10,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:47:03" (1/3) ... [2022-11-03 02:47:10,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e985dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:47:10, skipping insertion in model container [2022-11-03 02:47:10,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:06" (2/3) ... [2022-11-03 02:47:10,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e985dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:47:10, skipping insertion in model container [2022-11-03 02:47:10,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:47:10" (3/3) ... [2022-11-03 02:47:10,302 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--vfio--vfio.ko-entry_point.cil.out.i [2022-11-03 02:47:10,320 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:47:10,321 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:47:10,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:47:10,439 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;@7bade0cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:47:10,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:47:10,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 969 states, 580 states have (on average 1.3189655172413792) internal successors, (765), 603 states have internal predecessors, (765), 300 states have call successors, (300), 88 states have call predecessors, (300), 87 states have return successors, (295), 293 states have call predecessors, (295), 295 states have call successors, (295) [2022-11-03 02:47:10,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-03 02:47:10,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:10,495 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:10,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:10,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:10,501 INFO L85 PathProgramCache]: Analyzing trace with hash -720815502, now seen corresponding path program 1 times [2022-11-03 02:47:10,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:47:10,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83914608] [2022-11-03 02:47:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:10,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:47:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2022-11-03 02:47:11,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:47:11,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83914608] [2022-11-03 02:47:11,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83914608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:11,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:11,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:47:11,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408808576] [2022-11-03 02:47:11,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:11,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:47:11,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:47:11,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:47:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:47:11,800 INFO L87 Difference]: Start difference. First operand has 969 states, 580 states have (on average 1.3189655172413792) internal successors, (765), 603 states have internal predecessors, (765), 300 states have call successors, (300), 88 states have call predecessors, (300), 87 states have return successors, (295), 293 states have call predecessors, (295), 295 states have call successors, (295) Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:47:14,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:47:15,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:15,334 INFO L93 Difference]: Finished difference Result 2737 states and 3980 transitions. [2022-11-03 02:47:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:47:15,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 236 [2022-11-03 02:47:15,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:15,363 INFO L225 Difference]: With dead ends: 2737 [2022-11-03 02:47:15,363 INFO L226 Difference]: Without dead ends: 1810 [2022-11-03 02:47:15,372 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 [2022-11-03 02:47:15,375 INFO L413 NwaCegarLoop]: 1480 mSDtfsCounter, 1237 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:15,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 2664 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 252 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 02:47:15,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2022-11-03 02:47:15,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1807. [2022-11-03 02:47:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1096 states have (on average 1.3156934306569343) internal successors, (1442), 1126 states have internal predecessors, (1442), 541 states have call successors, (541), 170 states have call predecessors, (541), 169 states have return successors, (539), 535 states have call predecessors, (539), 539 states have call successors, (539) [2022-11-03 02:47:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2522 transitions. [2022-11-03 02:47:15,577 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2522 transitions. Word has length 236 [2022-11-03 02:47:15,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:15,583 INFO L495 AbstractCegarLoop]: Abstraction has 1807 states and 2522 transitions. [2022-11-03 02:47:15,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:47:15,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2522 transitions. [2022-11-03 02:47:15,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-03 02:47:15,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:15,600 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:15,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:47:15,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:15,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:15,601 INFO L85 PathProgramCache]: Analyzing trace with hash -456412833, now seen corresponding path program 1 times [2022-11-03 02:47:15,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:47:15,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746544655] [2022-11-03 02:47:15,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:15,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:47:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:16,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2022-11-03 02:47:16,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:47:16,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746544655] [2022-11-03 02:47:16,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746544655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:16,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:16,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:47:16,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872341943] [2022-11-03 02:47:16,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:16,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:47:16,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:47:16,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:47:16,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:47:16,404 INFO L87 Difference]: Start difference. First operand 1807 states and 2522 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:47:18,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:47:18,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:18,865 INFO L93 Difference]: Finished difference Result 5212 states and 7423 transitions. [2022-11-03 02:47:18,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:47:18,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 256 [2022-11-03 02:47:18,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:18,902 INFO L225 Difference]: With dead ends: 5212 [2022-11-03 02:47:18,903 INFO L226 Difference]: Without dead ends: 3447 [2022-11-03 02:47:18,918 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 [2022-11-03 02:47:18,919 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1207 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:18,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 2703 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:47:18,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2022-11-03 02:47:19,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 3437. [2022-11-03 02:47:19,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3437 states, 2089 states have (on average 1.3197702249880325) internal successors, (2757), 2145 states have internal predecessors, (2757), 1017 states have call successors, (1017), 331 states have call predecessors, (1017), 330 states have return successors, (1045), 1007 states have call predecessors, (1045), 1015 states have call successors, (1045) [2022-11-03 02:47:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 4819 transitions. [2022-11-03 02:47:19,162 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 4819 transitions. Word has length 256 [2022-11-03 02:47:19,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:19,163 INFO L495 AbstractCegarLoop]: Abstraction has 3437 states and 4819 transitions. [2022-11-03 02:47:19,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:47:19,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 4819 transitions. [2022-11-03 02:47:19,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-03 02:47:19,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:19,173 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:19,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:47:19,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:19,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:19,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1942638549, now seen corresponding path program 1 times [2022-11-03 02:47:19,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:47:19,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256918932] [2022-11-03 02:47:19,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:19,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:47:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2022-11-03 02:47:19,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:47:19,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256918932] [2022-11-03 02:47:19,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256918932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:19,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:19,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:47:19,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097847496] [2022-11-03 02:47:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:19,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:47:19,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:47:19,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:47:19,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:47:19,639 INFO L87 Difference]: Start difference. First operand 3437 states and 4819 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:47:20,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:20,397 INFO L93 Difference]: Finished difference Result 6738 states and 9428 transitions. [2022-11-03 02:47:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:47:20,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 262 [2022-11-03 02:47:20,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:20,436 INFO L225 Difference]: With dead ends: 6738 [2022-11-03 02:47:20,436 INFO L226 Difference]: Without dead ends: 3365 [2022-11-03 02:47:20,454 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 [2022-11-03 02:47:20,459 INFO L413 NwaCegarLoop]: 1189 mSDtfsCounter, 1306 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:20,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 1189 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:47:20,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2022-11-03 02:47:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 3365. [2022-11-03 02:47:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 2033 states have (on average 1.3108706345302508) internal successors, (2665), 2089 states have internal predecessors, (2665), 1001 states have call successors, (1001), 331 states have call predecessors, (1001), 330 states have return successors, (1029), 991 states have call predecessors, (1029), 999 states have call successors, (1029) [2022-11-03 02:47:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 4695 transitions. [2022-11-03 02:47:20,685 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 4695 transitions. Word has length 262 [2022-11-03 02:47:20,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:20,686 INFO L495 AbstractCegarLoop]: Abstraction has 3365 states and 4695 transitions. [2022-11-03 02:47:20,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:47:20,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 4695 transitions. [2022-11-03 02:47:20,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-03 02:47:20,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:20,696 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:20,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:47:20,696 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:20,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1055216131, now seen corresponding path program 1 times [2022-11-03 02:47:20,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:47:20,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011031411] [2022-11-03 02:47:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:20,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:47:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2022-11-03 02:47:21,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:47:21,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011031411] [2022-11-03 02:47:21,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011031411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:47:21,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132282487] [2022-11-03 02:47:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:21,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:47:21,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:47:21,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:47:21,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:47:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:22,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 3733 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:47:22,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2022-11-03 02:47:22,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:22,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132282487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:22,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:47:22,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-03 02:47:22,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080515728] [2022-11-03 02:47:22,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:22,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:47:22,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:47:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:47:22,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:47:22,365 INFO L87 Difference]: Start difference. First operand 3365 states and 4695 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 02:47:23,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:23,100 INFO L93 Difference]: Finished difference Result 6594 states and 9188 transitions. [2022-11-03 02:47:23,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:47:23,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 259 [2022-11-03 02:47:23,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:23,133 INFO L225 Difference]: With dead ends: 6594 [2022-11-03 02:47:23,133 INFO L226 Difference]: Without dead ends: 3293 [2022-11-03 02:47:23,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:47:23,153 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 1263 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:23,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 1144 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:47:23,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2022-11-03 02:47:23,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3293. [2022-11-03 02:47:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3293 states, 1997 states have (on average 1.2984476715072608) internal successors, (2593), 2053 states have internal predecessors, (2593), 965 states have call successors, (965), 331 states have call predecessors, (965), 330 states have return successors, (989), 955 states have call predecessors, (989), 963 states have call successors, (989) [2022-11-03 02:47:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 4547 transitions. [2022-11-03 02:47:23,445 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 4547 transitions. Word has length 259 [2022-11-03 02:47:23,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:23,446 INFO L495 AbstractCegarLoop]: Abstraction has 3293 states and 4547 transitions. [2022-11-03 02:47:23,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 02:47:23,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 4547 transitions. [2022-11-03 02:47:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-03 02:47:23,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:23,457 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:23,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:47:23,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:47:23,679 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:23,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:23,679 INFO L85 PathProgramCache]: Analyzing trace with hash 752384732, now seen corresponding path program 1 times [2022-11-03 02:47:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:47:23,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394801072] [2022-11-03 02:47:23,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:23,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:47:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 927 trivial. 0 not checked. [2022-11-03 02:47:24,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:47:24,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394801072] [2022-11-03 02:47:24,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394801072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:24,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:24,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:47:24,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952644856] [2022-11-03 02:47:24,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:24,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:47:24,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:47:24,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:47:24,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:47:24,150 INFO L87 Difference]: Start difference. First operand 3293 states and 4547 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-03 02:47:26,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:47:26,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:26,849 INFO L93 Difference]: Finished difference Result 5158 states and 7098 transitions. [2022-11-03 02:47:26,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:47:26,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 338 [2022-11-03 02:47:26,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:26,862 INFO L225 Difference]: With dead ends: 5158 [2022-11-03 02:47:26,862 INFO L226 Difference]: Without dead ends: 1929 [2022-11-03 02:47:26,874 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 [2022-11-03 02:47:26,874 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 93 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:26,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 2289 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 272 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 02:47:26,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2022-11-03 02:47:26,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1905. [2022-11-03 02:47:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1185 states have (on average 1.3012658227848102) internal successors, (1542), 1216 states have internal predecessors, (1542), 529 states have call successors, (529), 191 states have call predecessors, (529), 190 states have return successors, (540), 522 states have call predecessors, (540), 527 states have call successors, (540) [2022-11-03 02:47:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2611 transitions. [2022-11-03 02:47:26,986 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2611 transitions. Word has length 338 [2022-11-03 02:47:26,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:26,987 INFO L495 AbstractCegarLoop]: Abstraction has 1905 states and 2611 transitions. [2022-11-03 02:47:27,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-03 02:47:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2611 transitions. [2022-11-03 02:47:27,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-11-03 02:47:27,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:27,015 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:27,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:47:27,015 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:27,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:27,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1470569524, now seen corresponding path program 1 times [2022-11-03 02:47:27,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:47:27,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34655153] [2022-11-03 02:47:27,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:27,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:47:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2022-11-03 02:47:27,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:47:27,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34655153] [2022-11-03 02:47:27,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34655153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:27,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:27,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:47:27,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442488451] [2022-11-03 02:47:27,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:27,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:47:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:47:27,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:47:27,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:47:27,541 INFO L87 Difference]: Start difference. First operand 1905 states and 2611 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-03 02:47:29,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:47:30,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:30,242 INFO L93 Difference]: Finished difference Result 3725 states and 5235 transitions. [2022-11-03 02:47:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:47:30,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 388 [2022-11-03 02:47:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:30,260 INFO L225 Difference]: With dead ends: 3725 [2022-11-03 02:47:30,260 INFO L226 Difference]: Without dead ends: 1919 [2022-11-03 02:47:30,268 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 [2022-11-03 02:47:30,269 INFO L413 NwaCegarLoop]: 1157 mSDtfsCounter, 2 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:30,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2304 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 02:47:30,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2022-11-03 02:47:30,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1911. [2022-11-03 02:47:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1189 states have (on average 1.3002523128679562) internal successors, (1546), 1220 states have internal predecessors, (1546), 531 states have call successors, (531), 191 states have call predecessors, (531), 190 states have return successors, (542), 524 states have call predecessors, (542), 529 states have call successors, (542) [2022-11-03 02:47:30,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2619 transitions. [2022-11-03 02:47:30,442 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2619 transitions. Word has length 388 [2022-11-03 02:47:30,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:30,444 INFO L495 AbstractCegarLoop]: Abstraction has 1911 states and 2619 transitions. [2022-11-03 02:47:30,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-03 02:47:30,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2619 transitions. [2022-11-03 02:47:30,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-11-03 02:47:30,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:30,456 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:30,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:47:30,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:30,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:30,457 INFO L85 PathProgramCache]: Analyzing trace with hash 134340720, now seen corresponding path program 1 times [2022-11-03 02:47:30,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:47:30,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875831487] [2022-11-03 02:47:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:30,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:47:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2022-11-03 02:47:30,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:47:30,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875831487] [2022-11-03 02:47:30,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875831487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:30,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:30,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:47:30,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302590636] [2022-11-03 02:47:30,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:30,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:47:30,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:47:30,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:47:30,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:47:30,957 INFO L87 Difference]: Start difference. First operand 1911 states and 2619 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-03 02:47:32,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:32,777 INFO L93 Difference]: Finished difference Result 4776 states and 6510 transitions. [2022-11-03 02:47:32,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:47:32,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 393 [2022-11-03 02:47:32,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:32,794 INFO L225 Difference]: With dead ends: 4776 [2022-11-03 02:47:32,794 INFO L226 Difference]: Without dead ends: 2964 [2022-11-03 02:47:32,802 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 [2022-11-03 02:47:32,803 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 748 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:32,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 2485 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 02:47:32,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2022-11-03 02:47:33,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2938. [2022-11-03 02:47:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 1820 states have (on average 1.2934065934065935) internal successors, (2354), 1869 states have internal predecessors, (2354), 809 states have call successors, (809), 309 states have call predecessors, (809), 308 states have return successors, (820), 797 states have call predecessors, (820), 807 states have call successors, (820) [2022-11-03 02:47:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 3983 transitions. [2022-11-03 02:47:33,027 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 3983 transitions. Word has length 393 [2022-11-03 02:47:33,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:33,028 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 3983 transitions. [2022-11-03 02:47:33,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-03 02:47:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 3983 transitions. [2022-11-03 02:47:33,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-03 02:47:33,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:33,041 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:33,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:47:33,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:33,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:33,042 INFO L85 PathProgramCache]: Analyzing trace with hash 289762776, now seen corresponding path program 1 times [2022-11-03 02:47:33,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:47:33,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172176517] [2022-11-03 02:47:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:33,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:47:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1113 trivial. 0 not checked. [2022-11-03 02:47:35,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:47:35,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172176517] [2022-11-03 02:47:35,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172176517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:47:35,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634448382] [2022-11-03 02:47:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:35,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:47:35,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:47:35,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:47:35,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:47:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:36,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 4722 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 02:47:36,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2022-11-03 02:47:36,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:36,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634448382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:36,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:47:36,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-03 02:47:36,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858702004] [2022-11-03 02:47:36,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:36,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:47:36,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:47:36,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:47:36,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:47:36,792 INFO L87 Difference]: Start difference. First operand 2938 states and 3983 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 02:47:38,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:38,479 INFO L93 Difference]: Finished difference Result 5789 states and 7839 transitions. [2022-11-03 02:47:38,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:47:38,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 392 [2022-11-03 02:47:38,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:38,497 INFO L225 Difference]: With dead ends: 5789 [2022-11-03 02:47:38,497 INFO L226 Difference]: Without dead ends: 2948 [2022-11-03 02:47:38,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:47:38,509 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 11 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:38,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3468 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 02:47:38,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2022-11-03 02:47:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2940. [2022-11-03 02:47:38,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 1822 states have (on average 1.2925356750823271) internal successors, (2355), 1871 states have internal predecessors, (2355), 809 states have call successors, (809), 309 states have call predecessors, (809), 308 states have return successors, (820), 797 states have call predecessors, (820), 807 states have call successors, (820) [2022-11-03 02:47:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 3984 transitions. [2022-11-03 02:47:38,680 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 3984 transitions. Word has length 392 [2022-11-03 02:47:38,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:38,681 INFO L495 AbstractCegarLoop]: Abstraction has 2940 states and 3984 transitions. [2022-11-03 02:47:38,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 02:47:38,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 3984 transitions. [2022-11-03 02:47:38,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-11-03 02:47:38,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:38,695 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:38,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:38,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:47:38,923 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:38,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:38,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1902057365, now seen corresponding path program 1 times [2022-11-03 02:47:38,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:47:38,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344841893] [2022-11-03 02:47:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:38,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:47:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1399 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2022-11-03 02:47:40,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:47:40,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344841893] [2022-11-03 02:47:40,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344841893] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:47:40,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740111814] [2022-11-03 02:47:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:40,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:47:40,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:47:40,899 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:47:40,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15473ef1-c6dd-484d-a29e-0c2906ed471e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:47:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:42,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 5090 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:47:42,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1399 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2022-11-03 02:47:42,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:47:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1399 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2022-11-03 02:47:44,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740111814] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:47:44,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [428914984] [2022-11-03 02:47:44,509 INFO L159 IcfgInterpreter]: Started Sifa with 208 locations of interest [2022-11-03 02:47:44,510 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:47:44,515 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:47:44,521 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:47:44,522 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:47:47,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-03 02:47:49,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:49,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:49,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:50,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:50,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:50,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:50,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:50,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:51,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:51,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:51,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:51,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:51,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:51,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:51,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:51,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:47:51,822 INFO L244 Elim1Store]: Index analysis took 3316 ms [2022-11-03 02:59:50,626 WARN L234 SmtUtils]: Spent 11.98m on a formula simplification. DAG size of input: 7388 DAG size of output: 2857 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:59:50,643 INFO L356 Elim1Store]: treesize reduction 53589, result has 9.2 percent of original size [2022-11-03 02:59:50,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 96 select indices, 96 select index equivalence classes, 3192 disjoint index pairs (out of 4560 index pairs), introduced 96 new quantified variables, introduced 1476 case distinctions, treesize of input 1012 treesize of output 6241 [2022-11-03 03:00:05,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 288 treesize of output 252 [2022-11-03 03:00:06,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-03 03:00:09,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 79 select indices, 79 select index equivalence classes, 4481 disjoint index pairs (out of 3081 index pairs), introduced 79 new quantified variables, introduced 0 case distinctions, treesize of input 447 treesize of output 713