./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS --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 cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 --- 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-8393723 [2022-11-19 08:02:37,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:02:37,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:02:37,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:02:37,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:02:37,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:02:37,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:02:37,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:02:37,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:02:37,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:02:37,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:02:37,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:02:37,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:02:37,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:02:37,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:02:37,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:02:37,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:02:37,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:02:37,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:02:37,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:02:37,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:02:37,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:02:37,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:02:37,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:02:37,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:02:37,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:02:37,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:02:37,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:02:37,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:02:37,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:02:37,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:02:37,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:02:37,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:02:37,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:02:37,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:02:37,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:02:37,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:02:37,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:02:37,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:02:37,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:02:37,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:02:37,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:02:37,615 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:02:37,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:02:37,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:02:37,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:02:37,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:02:37,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:02:37,617 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:02:37,618 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:02:37,618 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:02:37,618 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:02:37,618 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:02:37,619 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:02:37,619 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:02:37,619 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:02:37,619 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:02:37,620 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:02:37,620 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:02:37,620 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:02:37,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:02:37,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:02:37,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:02:37,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:02:37,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:02:37,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:02:37,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:02:37,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:02:37,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:02:37,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:02:37,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:02:37,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:02:37,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:02:37,624 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:02:37,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:02:37,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:02:37,625 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:02:37,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:02:37,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:02:37,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:02:37,626 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_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 [2022-11-19 08:02:37,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:02:37,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:02:37,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:02:37,929 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:02:37,931 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:02:37,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2022-11-19 08:02:38,007 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/data/1bfc46718/cb40ae59b9564afa9131ebf51758d563/FLAGe2b073086 [2022-11-19 08:02:39,071 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:02:39,071 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2022-11-19 08:02:39,143 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/data/1bfc46718/cb40ae59b9564afa9131ebf51758d563/FLAGe2b073086 [2022-11-19 08:02:39,380 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/data/1bfc46718/cb40ae59b9564afa9131ebf51758d563 [2022-11-19 08:02:39,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:02:39,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:02:39,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:02:39,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:02:39,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:02:39,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:39" (1/1) ... [2022-11-19 08:02:39,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6110eb09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39, skipping insertion in model container [2022-11-19 08:02:39,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:39" (1/1) ... [2022-11-19 08:02:39,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:02:39,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:02:44,417 WARN L234 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_b4111aad-bb25-44f1-a811-12629206c59b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2022-11-19 08:02:44,424 WARN L234 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_b4111aad-bb25-44f1-a811-12629206c59b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2022-11-19 08:02:44,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:02:44,584 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:02:45,181 WARN L234 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_b4111aad-bb25-44f1-a811-12629206c59b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2022-11-19 08:02:45,181 WARN L234 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_b4111aad-bb25-44f1-a811-12629206c59b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2022-11-19 08:02:45,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:02:45,563 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:02:45,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45 WrapperNode [2022-11-19 08:02:45,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:02:45,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:02:45,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:02:45,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:02:45,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2022-11-19 08:02:45,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2022-11-19 08:02:45,991 INFO L138 Inliner]: procedures = 623, calls = 3565, calls flagged for inlining = 310, calls inlined = 274, statements flattened = 8340 [2022-11-19 08:02:45,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:02:45,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:02:45,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:02:45,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:02:46,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2022-11-19 08:02:46,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2022-11-19 08:02:46,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2022-11-19 08:02:46,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2022-11-19 08:02:46,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2022-11-19 08:02:46,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2022-11-19 08:02:46,397 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2022-11-19 08:02:46,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2022-11-19 08:02:46,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:02:46,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:02:46,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:02:46,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:02:46,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2022-11-19 08:02:46,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:02:46,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:02:46,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:02:46,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:02:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-19 08:02:46,581 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-19 08:02:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 08:02:46,581 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 08:02:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_phy_reg [2022-11-19 08:02:46,581 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_phy_reg [2022-11-19 08:02:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:02:46,582 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:02:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_force_ps [2022-11-19 08:02:46,582 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_force_ps [2022-11-19 08:02:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-19 08:02:46,583 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-19 08:02:46,583 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 08:02:46,583 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 08:02:46,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:02:46,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:02:46,583 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_del_timer [2022-11-19 08:02:46,584 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_del_timer [2022-11-19 08:02:46,584 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-19 08:02:46,584 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-19 08:02:46,585 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 08:02:46,585 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 08:02:46,585 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 08:02:46,585 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 08:02:46,585 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 08:02:46,585 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 08:02:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 08:02:46,586 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 08:02:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_disable [2022-11-19 08:02:46,587 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_disable [2022-11-19 08:02:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_io_resume [2022-11-19 08:02:46,587 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_io_resume [2022-11-19 08:02:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_restart_autoneg [2022-11-19 08:02:46,587 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_restart_autoneg [2022-11-19 08:02:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_close [2022-11-19 08:02:46,588 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_close [2022-11-19 08:02:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 08:02:46,589 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 08:02:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 08:02:46,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 08:02:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tpd [2022-11-19 08:02:46,590 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tpd [2022-11-19 08:02:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 08:02:46,590 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 08:02:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 08:02:46,591 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 08:02:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 08:02:46,592 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 08:02:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 08:02:46,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 08:02:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 08:02:46,594 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 08:02:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_irq [2022-11-19 08:02:46,595 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_irq [2022-11-19 08:02:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 08:02:46,595 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 08:02:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-19 08:02:46,596 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-19 08:02:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:02:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_106 [2022-11-19 08:02:46,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_106 [2022-11-19 08:02:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-11-19 08:02:46,597 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-11-19 08:02:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_shutdown [2022-11-19 08:02:46,597 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_shutdown [2022-11-19 08:02:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-19 08:02:46,597 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-19 08:02:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_check_eeprom_exist [2022-11-19 08:02:46,598 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_check_eeprom_exist [2022-11-19 08:02:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-19 08:02:46,599 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-19 08:02:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:02:46,599 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:02:46,600 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 08:02:46,600 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 08:02:46,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:02:46,600 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_hw_set_mac_addr [2022-11-19 08:02:46,600 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_hw_set_mac_addr [2022-11-19 08:02:46,601 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 08:02:46,601 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 08:02:46,601 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 08:02:46,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 08:02:46,602 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tx_buffer [2022-11-19 08:02:46,602 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tx_buffer [2022-11-19 08:02:46,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:02:46,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 08:02:46,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 08:02:46,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:02:46,604 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 08:02:46,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 08:02:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-19 08:02:46,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-19 08:02:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:02:46,606 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:02:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 08:02:46,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 08:02:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-19 08:02:46,607 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-19 08:02:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 08:02:46,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 08:02:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-19 08:02:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-19 08:02:46,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 08:02:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 08:02:46,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 08:02:46,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 08:02:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_reset [2022-11-19 08:02:46,610 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_reset [2022-11-19 08:02:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 08:02:46,613 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 08:02:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 08:02:46,614 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 08:02:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_down [2022-11-19 08:02:46,616 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_down [2022-11-19 08:02:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:02:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure __atl1e_vlan_mode [2022-11-19 08:02:46,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __atl1e_vlan_mode [2022-11-19 08:02:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 08:02:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 08:02:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 08:02:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 08:02:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:02:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-19 08:02:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-19 08:02:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 08:02:46,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 08:02:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 08:02:46,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 08:02:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:02:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 08:02:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-19 08:02:46,627 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-19 08:02:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-19 08:02:46,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-19 08:02:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-19 08:02:46,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-19 08:02:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2022-11-19 08:02:46,699 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2022-11-19 08:02:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_set_multi [2022-11-19 08:02:46,699 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_set_multi [2022-11-19 08:02:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_remove [2022-11-19 08:02:46,699 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_remove [2022-11-19 08:02:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 08:02:46,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 08:02:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2022-11-19 08:02:46,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2022-11-19 08:02:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 08:02:46,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 08:02:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-19 08:02:46,700 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-19 08:02:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 08:02:46,700 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 08:02:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 08:02:46,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 08:02:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_ring_resources [2022-11-19 08:02:46,701 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_ring_resources [2022-11-19 08:02:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-19 08:02:46,701 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-19 08:02:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 08:02:46,701 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 08:02:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 08:02:46,701 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 08:02:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_validate_option [2022-11-19 08:02:46,702 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_validate_option [2022-11-19 08:02:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-19 08:02:46,702 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-19 08:02:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-11-19 08:02:46,702 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-11-19 08:02:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:02:46,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:02:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-19 08:02:46,703 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-19 08:02:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 08:02:46,703 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 08:02:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:02:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:02:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:02:46,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:02:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 08:02:46,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 08:02:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 08:02:46,706 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 08:02:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-19 08:02:46,706 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-19 08:02:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 08:02:46,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 08:02:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_tx_ring [2022-11-19 08:02:46,707 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_tx_ring [2022-11-19 08:02:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2022-11-19 08:02:46,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2022-11-19 08:02:46,708 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 08:02:46,708 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 08:02:46,708 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-19 08:02:46,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-19 08:02:46,708 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-19 08:02:46,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-19 08:02:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2022-11-19 08:02:46,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2022-11-19 08:02:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-19 08:02:46,709 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-19 08:02:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:02:46,710 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:02:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_resume [2022-11-19 08:02:46,710 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_resume [2022-11-19 08:02:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 08:02:46,710 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 08:02:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-19 08:02:46,711 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-19 08:02:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:02:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 08:02:46,711 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 08:02:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-19 08:02:46,712 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-19 08:02:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 08:02:46,712 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 08:02:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_tx_timeout [2022-11-19 08:02:46,712 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_tx_timeout [2022-11-19 08:02:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_114 [2022-11-19 08:02:46,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_114 [2022-11-19 08:02:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:02:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_vlan_mode [2022-11-19 08:02:46,713 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_vlan_mode [2022-11-19 08:02:46,714 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_write_phy_reg [2022-11-19 08:02:46,714 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_write_phy_reg [2022-11-19 08:02:46,714 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-19 08:02:46,714 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-19 08:02:46,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_102 [2022-11-19 08:02:46,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_102 [2022-11-19 08:02:46,715 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_up [2022-11-19 08:02:46,715 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_up [2022-11-19 08:02:46,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:02:46,715 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_commit [2022-11-19 08:02:46,715 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_commit [2022-11-19 08:02:46,716 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-19 08:02:46,716 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-19 08:02:46,717 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-19 08:02:46,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-19 08:02:46,721 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 08:02:46,721 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 08:02:46,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 08:02:46,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 08:02:46,722 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 08:02:46,722 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 08:02:46,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:02:46,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:02:46,723 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reinit_locked [2022-11-19 08:02:46,725 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reinit_locked [2022-11-19 08:02:46,725 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_init [2022-11-19 08:02:46,725 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_init [2022-11-19 08:02:46,725 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_intr [2022-11-19 08:02:46,726 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_intr [2022-11-19 08:02:46,726 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 08:02:46,726 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 08:02:46,726 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2022-11-19 08:02:46,726 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2022-11-19 08:02:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_open [2022-11-19 08:02:46,727 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_open [2022-11-19 08:02:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 08:02:46,727 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 08:02:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-19 08:02:46,727 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-19 08:02:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_enable [2022-11-19 08:02:46,728 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_enable [2022-11-19 08:02:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:02:46,728 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:02:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:02:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_netpoll [2022-11-19 08:02:46,729 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_netpoll [2022-11-19 08:02:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:02:46,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:02:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_eeprom [2022-11-19 08:02:46,729 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_eeprom [2022-11-19 08:02:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_suspend [2022-11-19 08:02:46,730 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_suspend [2022-11-19 08:02:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 08:02:46,730 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 08:02:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-19 08:02:46,730 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-19 08:02:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_nway_reset [2022-11-19 08:02:46,731 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_nway_reset [2022-11-19 08:02:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_105 [2022-11-19 08:02:46,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_105 [2022-11-19 08:02:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-19 08:02:46,731 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-19 08:02:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_request_irq [2022-11-19 08:02:46,732 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_request_irq [2022-11-19 08:02:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2022-11-19 08:02:46,732 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2022-11-19 08:02:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 08:02:46,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 08:02:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-19 08:02:46,733 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-19 08:02:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 08:02:46,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 08:02:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_eeprom_len [2022-11-19 08:02:46,733 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_eeprom_len [2022-11-19 08:02:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-19 08:02:46,734 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-19 08:02:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 08:02:46,734 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 08:02:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reset_hw [2022-11-19 08:02:46,734 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reset_hw [2022-11-19 08:02:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-11-19 08:02:46,735 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-11-19 08:02:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 08:02:46,735 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 08:02:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:02:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-19 08:02:46,735 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-19 08:02:46,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 08:02:46,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 08:02:46,736 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_regs_len [2022-11-19 08:02:46,736 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_regs_len [2022-11-19 08:02:46,736 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_rx_ring [2022-11-19 08:02:46,736 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_rx_ring [2022-11-19 08:02:47,962 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:02:47,967 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:02:48,425 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:02:59,633 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 08:02:59,928 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:03:03,480 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:03:03,480 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:03:03,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:03 BoogieIcfgContainer [2022-11-19 08:03:03,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:03:03,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:03:03,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:03:03,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:03:03,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:02:39" (1/3) ... [2022-11-19 08:03:03,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca59c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:03, skipping insertion in model container [2022-11-19 08:03:03,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (2/3) ... [2022-11-19 08:03:03,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca59c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:03, skipping insertion in model container [2022-11-19 08:03:03,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:03" (3/3) ... [2022-11-19 08:03:03,527 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2022-11-19 08:03:03,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:03:03,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:03:03,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:03:03,713 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;@276c51f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:03:03,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:03:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 2192 states, 1276 states have (on average 1.2758620689655173) internal successors, (1628), 1301 states have internal predecessors, (1628), 767 states have call successors, (767), 149 states have call predecessors, (767), 148 states have return successors, (761), 759 states have call predecessors, (761), 761 states have call successors, (761) [2022-11-19 08:03:03,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-19 08:03:03,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:03,768 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2022-11-19 08:03:03,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:03:03,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:03,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2081081197, now seen corresponding path program 1 times [2022-11-19 08:03:03,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:03,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932722542] [2022-11-19 08:03:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:03,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2022-11-19 08:03:04,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:04,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932722542] [2022-11-19 08:03:04,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932722542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:04,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:04,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:03:04,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260706223] [2022-11-19 08:03:04,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:04,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:03:04,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:03:04,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:03:04,965 INFO L87 Difference]: Start difference. First operand has 2192 states, 1276 states have (on average 1.2758620689655173) internal successors, (1628), 1301 states have internal predecessors, (1628), 767 states have call successors, (767), 149 states have call predecessors, (767), 148 states have return successors, (761), 759 states have call predecessors, (761), 761 states have call successors, (761) Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 08:03:08,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:10,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:13,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:15,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:15,414 INFO L93 Difference]: Finished difference Result 5694 states and 8169 transitions. [2022-11-19 08:03:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:03:15,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 202 [2022-11-19 08:03:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:03:15,493 INFO L225 Difference]: With dead ends: 5694 [2022-11-19 08:03:15,493 INFO L226 Difference]: Without dead ends: 3461 [2022-11-19 08:03:15,517 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 [2022-11-19 08:03:15,521 INFO L413 NwaCegarLoop]: 3226 mSDtfsCounter, 1901 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 5918 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:03:15,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 5918 Invalid, 839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 829 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2022-11-19 08:03:15,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2022-11-19 08:03:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3458. [2022-11-19 08:03:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 2029 states have (on average 1.2617052735337604) internal successors, (2560), 2070 states have internal predecessors, (2560), 1172 states have call successors, (1172), 257 states have call predecessors, (1172), 256 states have return successors, (1172), 1167 states have call predecessors, (1172), 1172 states have call successors, (1172) [2022-11-19 08:03:15,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4904 transitions. [2022-11-19 08:03:15,944 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4904 transitions. Word has length 202 [2022-11-19 08:03:15,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:15,945 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 4904 transitions. [2022-11-19 08:03:15,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 08:03:15,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4904 transitions. [2022-11-19 08:03:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-19 08:03:15,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:15,958 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:03:15,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:03:15,958 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:03:15,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:15,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1820617382, now seen corresponding path program 1 times [2022-11-19 08:03:15,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:15,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834147654] [2022-11-19 08:03:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:15,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:16,124 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:03:16,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870939870] [2022-11-19 08:03:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:16,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:03:16,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:03:16,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:03:16,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:03:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:17,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 3743 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:03:17,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:03:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2022-11-19 08:03:18,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:03:18,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:18,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834147654] [2022-11-19 08:03:18,007 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:03:18,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870939870] [2022-11-19 08:03:18,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870939870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:18,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:18,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:03:18,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781010870] [2022-11-19 08:03:18,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:18,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:03:18,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:18,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:03:18,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:03:18,011 INFO L87 Difference]: Start difference. First operand 3458 states and 4904 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:03:20,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:22,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:25,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:27,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:29,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:29,621 INFO L93 Difference]: Finished difference Result 9050 states and 12801 transitions. [2022-11-19 08:03:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:03:29,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 197 [2022-11-19 08:03:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:03:29,667 INFO L225 Difference]: With dead ends: 9050 [2022-11-19 08:03:29,668 INFO L226 Difference]: Without dead ends: 5621 [2022-11-19 08:03:29,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:03:29,694 INFO L413 NwaCegarLoop]: 3802 mSDtfsCounter, 2119 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 6406 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:03:29,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2119 Valid, 6406 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 982 Invalid, 2 Unknown, 0 Unchecked, 11.1s Time] [2022-11-19 08:03:29,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5621 states. [2022-11-19 08:03:29,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5621 to 5616. [2022-11-19 08:03:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5616 states, 3318 states have (on average 1.2597950572634118) internal successors, (4180), 3378 states have internal predecessors, (4180), 1863 states have call successors, (1863), 435 states have call predecessors, (1863), 434 states have return successors, (1863), 1854 states have call predecessors, (1863), 1863 states have call successors, (1863) [2022-11-19 08:03:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5616 states to 5616 states and 7906 transitions. [2022-11-19 08:03:30,040 INFO L78 Accepts]: Start accepts. Automaton has 5616 states and 7906 transitions. Word has length 197 [2022-11-19 08:03:30,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:30,044 INFO L495 AbstractCegarLoop]: Abstraction has 5616 states and 7906 transitions. [2022-11-19 08:03:30,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:03:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5616 states and 7906 transitions. [2022-11-19 08:03:30,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-19 08:03:30,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:30,059 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 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] [2022-11-19 08:03:30,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:03:30,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:03:30,275 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:03:30,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:30,276 INFO L85 PathProgramCache]: Analyzing trace with hash -885114963, now seen corresponding path program 1 times [2022-11-19 08:03:30,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:30,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242350588] [2022-11-19 08:03:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:30,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:30,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:30,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242350588] [2022-11-19 08:03:30,595 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 08:03:30,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340451265] [2022-11-19 08:03:30,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:30,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:03:30,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:03:30,597 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:03:30,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:03:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:32,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 3923 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:03:32,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:03:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-19 08:03:32,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:03:32,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340451265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:32,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:32,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:03:32,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943779041] [2022-11-19 08:03:32,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:32,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:03:32,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:32,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:03:32,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:03:32,593 INFO L87 Difference]: Start difference. First operand 5616 states and 7906 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-19 08:03:35,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:38,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:40,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:42,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:42,584 INFO L93 Difference]: Finished difference Result 13568 states and 19072 transitions. [2022-11-19 08:03:42,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:03:42,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 238 [2022-11-19 08:03:42,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:03:42,638 INFO L225 Difference]: With dead ends: 13568 [2022-11-19 08:03:42,639 INFO L226 Difference]: Without dead ends: 7981 [2022-11-19 08:03:42,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:03:42,668 INFO L413 NwaCegarLoop]: 3440 mSDtfsCounter, 2776 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 35 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2776 SdHoareTripleChecker+Valid, 5615 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:03:42,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2776 Valid, 5615 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 832 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2022-11-19 08:03:42,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7981 states. [2022-11-19 08:03:43,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7981 to 7975. [2022-11-19 08:03:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7975 states, 4726 states have (on average 1.2632247143461701) internal successors, (5970), 4808 states have internal predecessors, (5970), 2613 states have call successors, (2613), 636 states have call predecessors, (2613), 635 states have return successors, (2613), 2599 states have call predecessors, (2613), 2613 states have call successors, (2613) [2022-11-19 08:03:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7975 states to 7975 states and 11196 transitions. [2022-11-19 08:03:43,134 INFO L78 Accepts]: Start accepts. Automaton has 7975 states and 11196 transitions. Word has length 238 [2022-11-19 08:03:43,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:43,136 INFO L495 AbstractCegarLoop]: Abstraction has 7975 states and 11196 transitions. [2022-11-19 08:03:43,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-19 08:03:43,137 INFO L276 IsEmpty]: Start isEmpty. Operand 7975 states and 11196 transitions. [2022-11-19 08:03:43,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-19 08:03:43,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:43,146 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 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] [2022-11-19 08:03:43,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:03:43,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:03:43,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:03:43,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:43,364 INFO L85 PathProgramCache]: Analyzing trace with hash 882695324, now seen corresponding path program 1 times [2022-11-19 08:03:43,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:43,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454333570] [2022-11-19 08:03:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:43,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:43,545 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:03:43,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907147331] [2022-11-19 08:03:43,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:43,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:03:43,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:03:43,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:03:43,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:03:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:45,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 3999 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:03:45,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:03:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2022-11-19 08:03:45,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:03:45,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:45,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454333570] [2022-11-19 08:03:45,777 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:03:45,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907147331] [2022-11-19 08:03:45,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907147331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:45,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:45,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:03:45,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188426125] [2022-11-19 08:03:45,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:45,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:03:45,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:45,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:03:45,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:03:45,780 INFO L87 Difference]: Start difference. First operand 7975 states and 11196 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-19 08:03:48,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:51,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:54,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:55,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:55,844 INFO L93 Difference]: Finished difference Result 17782 states and 24962 transitions. [2022-11-19 08:03:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:03:55,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 244 [2022-11-19 08:03:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:03:55,923 INFO L225 Difference]: With dead ends: 17782 [2022-11-19 08:03:55,923 INFO L226 Difference]: Without dead ends: 9836 [2022-11-19 08:03:55,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:03:55,962 INFO L413 NwaCegarLoop]: 3834 mSDtfsCounter, 2112 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 6430 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:03:55,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 6430 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 983 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2022-11-19 08:03:55,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9836 states. [2022-11-19 08:03:56,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9836 to 9831. [2022-11-19 08:03:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9831 states, 5838 states have (on average 1.26293251113395) internal successors, (7373), 5939 states have internal predecessors, (7373), 3202 states have call successors, (3202), 791 states have call predecessors, (3202), 790 states have return successors, (3202), 3184 states have call predecessors, (3202), 3202 states have call successors, (3202) [2022-11-19 08:03:56,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9831 states to 9831 states and 13777 transitions. [2022-11-19 08:03:56,635 INFO L78 Accepts]: Start accepts. Automaton has 9831 states and 13777 transitions. Word has length 244 [2022-11-19 08:03:56,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:56,636 INFO L495 AbstractCegarLoop]: Abstraction has 9831 states and 13777 transitions. [2022-11-19 08:03:56,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-19 08:03:56,637 INFO L276 IsEmpty]: Start isEmpty. Operand 9831 states and 13777 transitions. [2022-11-19 08:03:56,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-19 08:03:56,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:56,648 INFO L195 NwaCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:03:56,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:03:56,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:03:56,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:03:56,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:56,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1550062589, now seen corresponding path program 1 times [2022-11-19 08:03:56,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:56,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651096825] [2022-11-19 08:03:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:56,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:57,060 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:03:57,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024374399] [2022-11-19 08:03:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:57,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:03:57,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:03:57,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:03:57,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:03:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:58,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 4208 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-19 08:03:58,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1037 trivial. 0 not checked. [2022-11-19 08:04:28,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:04:28,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:28,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651096825] [2022-11-19 08:04:28,671 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:04:28,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024374399] [2022-11-19 08:04:28,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024374399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:28,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:28,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:04:28,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592707210] [2022-11-19 08:04:28,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:28,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:04:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:04:28,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:04:28,674 INFO L87 Difference]: Start difference. First operand 9831 states and 13777 transitions. Second operand has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35) [2022-11-19 08:04:34,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:36,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:38,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:40,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:44,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:47,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:50,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:51,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:53,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:55,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:58,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:58,971 INFO L93 Difference]: Finished difference Result 12383 states and 17252 transitions. [2022-11-19 08:04:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:04:58,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35) Word has length 306 [2022-11-19 08:04:58,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:59,035 INFO L225 Difference]: With dead ends: 12383 [2022-11-19 08:04:59,035 INFO L226 Difference]: Without dead ends: 12381 [2022-11-19 08:04:59,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:04:59,044 INFO L413 NwaCegarLoop]: 3176 mSDtfsCounter, 1726 mSDsluCounter, 11271 mSDsCounter, 0 mSdLazyCounter, 2905 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 14447 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2905 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:59,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 14447 Invalid, 2913 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2905 Invalid, 8 Unknown, 0 Unchecked, 29.4s Time] [2022-11-19 08:04:59,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12381 states. [2022-11-19 08:04:59,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12381 to 12374. [2022-11-19 08:04:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12374 states, 7367 states have (on average 1.2595357676123253) internal successors, (9279), 7499 states have internal predecessors, (9279), 3980 states have call successors, (3980), 1035 states have call predecessors, (3980), 1026 states have return successors, (3984), 3937 states have call predecessors, (3984), 3980 states have call successors, (3984) [2022-11-19 08:04:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12374 states to 12374 states and 17243 transitions. [2022-11-19 08:04:59,878 INFO L78 Accepts]: Start accepts. Automaton has 12374 states and 17243 transitions. Word has length 306 [2022-11-19 08:04:59,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:59,882 INFO L495 AbstractCegarLoop]: Abstraction has 12374 states and 17243 transitions. [2022-11-19 08:04:59,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35) [2022-11-19 08:04:59,883 INFO L276 IsEmpty]: Start isEmpty. Operand 12374 states and 17243 transitions. [2022-11-19 08:04:59,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-19 08:04:59,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:59,909 INFO L195 NwaCegarLoop]: trace histogram [21, 14, 14, 14, 14, 14, 14, 10, 10, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:59,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 08:05:00,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:00,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:05:00,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:00,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2112349296, now seen corresponding path program 1 times [2022-11-19 08:05:00,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:00,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939022224] [2022-11-19 08:05:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:00,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:00,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:00,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939022224] [2022-11-19 08:05:00,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 08:05:00,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439311839] [2022-11-19 08:05:00,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:00,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:00,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:00,498 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:05:00,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:05:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:02,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 4493 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:05:02,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:05:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2022-11-19 08:05:02,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:05:02,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439311839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:02,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:05:02,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:05:02,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558127317] [2022-11-19 08:05:02,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:02,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:05:02,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:02,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:05:02,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:05:02,481 INFO L87 Difference]: Start difference. First operand 12374 states and 17243 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-19 08:05:06,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:09,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:11,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:13,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:13,653 INFO L93 Difference]: Finished difference Result 35802 states and 49873 transitions. [2022-11-19 08:05:13,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:05:13,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 374 [2022-11-19 08:05:13,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:13,778 INFO L225 Difference]: With dead ends: 35802 [2022-11-19 08:05:13,778 INFO L226 Difference]: Without dead ends: 23475 [2022-11-19 08:05:13,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:05:13,837 INFO L413 NwaCegarLoop]: 3688 mSDtfsCounter, 2809 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2809 SdHoareTripleChecker+Valid, 6303 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:13,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2809 Valid, 6303 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 875 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2022-11-19 08:05:13,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23475 states. [2022-11-19 08:05:15,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23475 to 23454. [2022-11-19 08:05:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23454 states, 13991 states have (on average 1.260238724894575) internal successors, (17632), 14267 states have internal predecessors, (17632), 7502 states have call successors, (7502), 2001 states have call predecessors, (7502), 1960 states have return successors, (7526), 7362 states have call predecessors, (7526), 7502 states have call successors, (7526) [2022-11-19 08:05:15,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23454 states to 23454 states and 32660 transitions. [2022-11-19 08:05:15,672 INFO L78 Accepts]: Start accepts. Automaton has 23454 states and 32660 transitions. Word has length 374 [2022-11-19 08:05:15,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:15,672 INFO L495 AbstractCegarLoop]: Abstraction has 23454 states and 32660 transitions. [2022-11-19 08:05:15,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-19 08:05:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 23454 states and 32660 transitions. [2022-11-19 08:05:15,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-19 08:05:15,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:15,713 INFO L195 NwaCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 10, 10, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:05:15,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:05:15,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:15,930 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:05:15,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:15,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1607278609, now seen corresponding path program 1 times [2022-11-19 08:05:15,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:15,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183111047] [2022-11-19 08:05:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:15,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:16,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:16,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183111047] [2022-11-19 08:05:16,197 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 08:05:16,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616674107] [2022-11-19 08:05:16,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:16,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:16,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:16,199 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:05:16,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:05:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:18,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 4793 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:05:18,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:05:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2022-11-19 08:05:18,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:05:18,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616674107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:18,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:05:18,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:05:18,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452453234] [2022-11-19 08:05:18,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:18,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:05:18,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:18,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:05:18,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:05:18,207 INFO L87 Difference]: Start difference. First operand 23454 states and 32660 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-19 08:05:21,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:23,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:26,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:29,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:31,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:31,660 INFO L93 Difference]: Finished difference Result 66610 states and 93049 transitions. [2022-11-19 08:05:31,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:05:31,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 410 [2022-11-19 08:05:31,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:31,914 INFO L225 Difference]: With dead ends: 66610 [2022-11-19 08:05:31,914 INFO L226 Difference]: Without dead ends: 43203 [2022-11-19 08:05:32,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:05:32,165 INFO L413 NwaCegarLoop]: 4069 mSDtfsCounter, 2893 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 6727 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:32,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2893 Valid, 6727 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 946 Invalid, 3 Unknown, 0 Unchecked, 11.3s Time] [2022-11-19 08:05:32,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43203 states. [2022-11-19 08:05:34,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43203 to 43138. [2022-11-19 08:05:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43138 states, 25843 states have (on average 1.2613086715938553) internal successors, (32596), 26368 states have internal predecessors, (32596), 13799 states have call successors, (13799), 3575 states have call predecessors, (13799), 3495 states have return successors, (13903), 13514 states have call predecessors, (13903), 13799 states have call successors, (13903) [2022-11-19 08:05:35,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43138 states to 43138 states and 60298 transitions. [2022-11-19 08:05:35,265 INFO L78 Accepts]: Start accepts. Automaton has 43138 states and 60298 transitions. Word has length 410 [2022-11-19 08:05:35,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:35,266 INFO L495 AbstractCegarLoop]: Abstraction has 43138 states and 60298 transitions. [2022-11-19 08:05:35,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-19 08:05:35,266 INFO L276 IsEmpty]: Start isEmpty. Operand 43138 states and 60298 transitions. [2022-11-19 08:05:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-19 08:05:35,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:35,323 INFO L195 NwaCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 11, 11, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:05:35,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:05:35,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 08:05:35,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:05:35,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:35,550 INFO L85 PathProgramCache]: Analyzing trace with hash -455222414, now seen corresponding path program 1 times [2022-11-19 08:05:35,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:35,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756561327] [2022-11-19 08:05:35,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:35,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:35,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:35,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756561327] [2022-11-19 08:05:35,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 08:05:35,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261710203] [2022-11-19 08:05:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:35,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:35,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:35,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:05:35,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:05:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:37,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 4551 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:05:37,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:05:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 979 trivial. 0 not checked. [2022-11-19 08:05:38,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:05:38,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261710203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:38,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:05:38,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:05:38,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663090135] [2022-11-19 08:05:38,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:38,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:05:38,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:38,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:05:38,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:05:38,064 INFO L87 Difference]: Start difference. First operand 43138 states and 60298 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (53), 3 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-19 08:05:42,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:45,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:48,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:52,098 INFO L93 Difference]: Finished difference Result 128664 states and 179810 transitions. [2022-11-19 08:05:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:05:52,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (53), 3 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 392 [2022-11-19 08:05:52,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:52,688 INFO L225 Difference]: With dead ends: 128664 [2022-11-19 08:05:52,688 INFO L226 Difference]: Without dead ends: 85573 [2022-11-19 08:05:53,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:05:53,050 INFO L413 NwaCegarLoop]: 3856 mSDtfsCounter, 2869 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2869 SdHoareTripleChecker+Valid, 6544 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:53,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2869 Valid, 6544 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 900 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2022-11-19 08:05:53,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85573 states. [2022-11-19 08:05:57,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85573 to 85424. [2022-11-19 08:05:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85424 states, 51155 states have (on average 1.2600918776268204) internal successors, (64460), 52271 states have internal predecessors, (64460), 27323 states have call successors, (27323), 7106 states have call predecessors, (27323), 6945 states have return successors, (27530), 26682 states have call predecessors, (27530), 27323 states have call successors, (27530) [2022-11-19 08:05:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85424 states to 85424 states and 119313 transitions. [2022-11-19 08:05:58,911 INFO L78 Accepts]: Start accepts. Automaton has 85424 states and 119313 transitions. Word has length 392 [2022-11-19 08:05:58,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:58,912 INFO L495 AbstractCegarLoop]: Abstraction has 85424 states and 119313 transitions. [2022-11-19 08:05:58,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (53), 3 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-19 08:05:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 85424 states and 119313 transitions. [2022-11-19 08:05:58,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-19 08:05:58,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:58,995 INFO L195 NwaCegarLoop]: trace histogram [23, 14, 14, 14, 14, 14, 14, 12, 12, 6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1] [2022-11-19 08:05:59,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:05:59,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 08:05:59,213 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:05:59,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:59,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1236614088, now seen corresponding path program 1 times [2022-11-19 08:05:59,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:59,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629413231] [2022-11-19 08:05:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:59,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:59,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:59,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629413231] [2022-11-19 08:05:59,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 08:05:59,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233328368] [2022-11-19 08:05:59,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:59,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:59,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:59,535 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:05:59,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 08:06:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:01,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 4594 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:06:01,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 1227 trivial. 0 not checked. [2022-11-19 08:06:01,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:06:01,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233328368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:01,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:06:01,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:06:01,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986633880] [2022-11-19 08:06:01,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:01,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:06:01,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:01,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:06:01,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:06:01,573 INFO L87 Difference]: Start difference. First operand 85424 states and 119313 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-19 08:06:05,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:06:07,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:06:10,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:06:12,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:06:16,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:16,656 INFO L93 Difference]: Finished difference Result 171473 states and 242689 transitions. [2022-11-19 08:06:16,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:06:16,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 407 [2022-11-19 08:06:16,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:17,146 INFO L225 Difference]: With dead ends: 171473 [2022-11-19 08:06:17,146 INFO L226 Difference]: Without dead ends: 86096 [2022-11-19 08:06:17,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:06:17,350 INFO L413 NwaCegarLoop]: 2690 mSDtfsCounter, 5 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5376 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:17,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5376 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 782 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2022-11-19 08:06:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86096 states. [2022-11-19 08:06:21,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86096 to 85508. [2022-11-19 08:06:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85508 states, 51239 states have (on average 1.2596654891781651) internal successors, (64544), 52355 states have internal predecessors, (64544), 27323 states have call successors, (27323), 7106 states have call predecessors, (27323), 6945 states have return successors, (27530), 26682 states have call predecessors, (27530), 27323 states have call successors, (27530) [2022-11-19 08:06:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85508 states to 85508 states and 119397 transitions. [2022-11-19 08:06:22,117 INFO L78 Accepts]: Start accepts. Automaton has 85508 states and 119397 transitions. Word has length 407 [2022-11-19 08:06:22,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:22,118 INFO L495 AbstractCegarLoop]: Abstraction has 85508 states and 119397 transitions. [2022-11-19 08:06:22,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-19 08:06:22,119 INFO L276 IsEmpty]: Start isEmpty. Operand 85508 states and 119397 transitions. [2022-11-19 08:06:22,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2022-11-19 08:06:22,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:22,172 INFO L195 NwaCegarLoop]: trace histogram [23, 14, 14, 14, 14, 14, 14, 12, 12, 6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:22,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:06:22,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:22,389 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:22,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:22,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1427110044, now seen corresponding path program 1 times [2022-11-19 08:06:22,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:22,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793165761] [2022-11-19 08:06:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:22,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:22,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:22,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793165761] [2022-11-19 08:06:22,706 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 08:06:22,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871330273] [2022-11-19 08:06:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:22,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:22,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:22,708 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:22,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 08:06:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:24,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 4623 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-19 08:06:24,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 1262 trivial. 0 not checked. [2022-11-19 08:07:03,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:07:03,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871330273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:03,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:03,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 08:07:03,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136043305] [2022-11-19 08:07:03,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:03,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:07:03,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:07:03,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:07:03,133 INFO L87 Difference]: Start difference. First operand 85508 states and 119397 transitions. Second operand has 7 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-19 08:07:10,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:07:14,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:07:17,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:07:23,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:23,541 INFO L93 Difference]: Finished difference Result 103968 states and 144358 transitions. [2022-11-19 08:07:23,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:07:23,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) Word has length 416 [2022-11-19 08:07:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:24,233 INFO L225 Difference]: With dead ends: 103968 [2022-11-19 08:07:24,233 INFO L226 Difference]: Without dead ends: 103966 [2022-11-19 08:07:24,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:07:24,278 INFO L413 NwaCegarLoop]: 3163 mSDtfsCounter, 2688 mSDsluCounter, 9761 mSDsCounter, 0 mSdLazyCounter, 2814 mSolverCounterSat, 808 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 12924 SdHoareTripleChecker+Invalid, 3625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 808 IncrementalHoareTripleChecker+Valid, 2814 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:24,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2694 Valid, 12924 Invalid, 3625 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [808 Valid, 2814 Invalid, 3 Unknown, 0 Unchecked, 15.6s Time] [2022-11-19 08:07:24,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103966 states. [2022-11-19 08:07:29,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103966 to 103934. [2022-11-19 08:07:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103934 states, 62313 states have (on average 1.2556288414937493) internal successors, (78242), 63669 states have internal predecessors, (78242), 32905 states have call successors, (32905), 8904 states have call predecessors, (32905), 8715 states have return successors, (33170), 32128 states have call predecessors, (33170), 32905 states have call successors, (33170) [2022-11-19 08:07:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103934 states to 103934 states and 144317 transitions. [2022-11-19 08:07:30,511 INFO L78 Accepts]: Start accepts. Automaton has 103934 states and 144317 transitions. Word has length 416 [2022-11-19 08:07:30,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:30,512 INFO L495 AbstractCegarLoop]: Abstraction has 103934 states and 144317 transitions. [2022-11-19 08:07:30,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-19 08:07:30,513 INFO L276 IsEmpty]: Start isEmpty. Operand 103934 states and 144317 transitions. [2022-11-19 08:07:30,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-11-19 08:07:30,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:30,642 INFO L195 NwaCegarLoop]: trace histogram [25, 16, 16, 16, 16, 16, 16, 14, 14, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:30,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 08:07:30,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4111aad-bb25-44f1-a811-12629206c59b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:07:30,852 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:30,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:30,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1253017201, now seen corresponding path program 1 times [2022-11-19 08:07:30,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:30,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289104742] [2022-11-19 08:07:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:30,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2022-11-19 08:07:32,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:32,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289104742] [2022-11-19 08:07:32,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289104742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:32,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:32,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:07:32,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047858963] [2022-11-19 08:07:32,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:32,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:07:32,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:32,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:07:32,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:07:32,719 INFO L87 Difference]: Start difference. First operand 103934 states and 144317 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62)