./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-usb-pegasus.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0 --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 97d835cf94d1b164c94e454298c9901161d3451d2aec7fccfb9f6ea65c4976ed --- 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-e04fb08 [2022-11-16 19:44:25,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:44:25,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:44:25,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:44:25,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:44:25,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:44:25,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:44:25,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:44:25,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:44:25,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:44:25,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:44:25,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:44:25,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:44:25,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:44:25,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:44:25,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:44:25,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:44:25,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:44:25,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:44:25,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:44:25,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:44:25,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:44:25,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:44:25,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:44:25,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:44:25,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:44:25,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:44:25,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:44:25,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:44:25,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:44:25,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:44:25,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:44:25,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:44:25,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:44:25,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:44:25,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:44:25,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:44:25,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:44:25,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:44:25,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:44:25,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:44:25,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 19:44:25,720 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:44:25,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:44:25,721 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:44:25,721 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:44:25,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:44:25,722 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:44:25,723 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:44:25,723 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:44:25,723 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:44:25,723 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:44:25,724 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:44:25,725 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:44:25,725 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:44:25,725 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:44:25,725 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:44:25,726 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:44:25,726 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:44:25,726 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:44:25,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:44:25,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:44:25,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:44:25,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:44:25,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:44:25,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:44:25,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:44:25,728 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:44:25,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:44:25,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:44:25,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:44:25,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:44:25,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:44:25,730 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:44:25,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:44:25,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:44:25,731 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:44:25,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:44:25,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:44:25,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:44:25,732 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_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97d835cf94d1b164c94e454298c9901161d3451d2aec7fccfb9f6ea65c4976ed [2022-11-16 19:44:26,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:44:26,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:44:26,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:44:26,060 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:44:26,061 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:44:26,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i [2022-11-16 19:44:26,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/data/44451b0c6/2d00b17396f7444fb539a81e61313ded/FLAGc85a2b616 [2022-11-16 19:44:27,076 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:44:27,077 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i [2022-11-16 19:44:27,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/data/44451b0c6/2d00b17396f7444fb539a81e61313ded/FLAGc85a2b616 [2022-11-16 19:44:27,518 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/data/44451b0c6/2d00b17396f7444fb539a81e61313ded [2022-11-16 19:44:27,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:44:27,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:44:27,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:44:27,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:44:27,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:44:27,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:44:27" (1/1) ... [2022-11-16 19:44:27,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bda731c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:27, skipping insertion in model container [2022-11-16 19:44:27,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:44:27" (1/1) ... [2022-11-16 19:44:27,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:44:27,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:44:30,999 WARN L229 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_1551270a-3ab4-4ce5-a1da-521a37e209dc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327451,327464] [2022-11-16 19:44:31,002 WARN L229 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_1551270a-3ab4-4ce5-a1da-521a37e209dc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327596,327609] [2022-11-16 19:44:31,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:44:31,095 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:44:31,543 WARN L229 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_1551270a-3ab4-4ce5-a1da-521a37e209dc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327451,327464] [2022-11-16 19:44:31,543 WARN L229 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_1551270a-3ab4-4ce5-a1da-521a37e209dc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327596,327609] [2022-11-16 19:44:31,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:44:31,878 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:44:31,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:31 WrapperNode [2022-11-16 19:44:31,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:44:31,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:44:31,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:44:31,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:44:31,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:31" (1/1) ... [2022-11-16 19:44:32,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:31" (1/1) ... [2022-11-16 19:44:32,331 INFO L138 Inliner]: procedures = 393, calls = 3380, calls flagged for inlining = 185, calls inlined = 165, statements flattened = 5628 [2022-11-16 19:44:32,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:44:32,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:44:32,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:44:32,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:44:32,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:31" (1/1) ... [2022-11-16 19:44:32,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:31" (1/1) ... [2022-11-16 19:44:32,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:31" (1/1) ... [2022-11-16 19:44:32,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:31" (1/1) ... [2022-11-16 19:44:32,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:31" (1/1) ... [2022-11-16 19:44:32,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:31" (1/1) ... [2022-11-16 19:44:32,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:31" (1/1) ... [2022-11-16 19:44:32,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:31" (1/1) ... [2022-11-16 19:44:32,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:44:32,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:44:32,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:44:32,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:44:32,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:31" (1/1) ... [2022-11-16 19:44:32,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:44:32,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:44:32,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:44:32,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:44:32,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-16 19:44:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-16 19:44:32,917 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-16 19:44:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-16 19:44:32,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 19:44:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 19:44:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-16 19:44:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-16 19:44:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2022-11-16 19:44:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2022-11-16 19:44:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure read_mii_word [2022-11-16 19:44:32,919 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mii_word [2022-11-16 19:44:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-16 19:44:32,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-16 19:44:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-16 19:44:32,920 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-16 19:44:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-16 19:44:32,920 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-16 19:44:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-16 19:44:32,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-16 19:44:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:44:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-16 19:44:32,921 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-16 19:44:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_dec_workqueue [2022-11-16 19:44:32,921 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_dec_workqueue [2022-11-16 19:44:32,922 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-16 19:44:32,922 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-16 19:44:32,922 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_disconnect [2022-11-16 19:44:32,922 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_disconnect [2022-11-16 19:44:32,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 19:44:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2022-11-16 19:44:32,923 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2022-11-16 19:44:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 19:44:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure __mii_op [2022-11-16 19:44:32,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __mii_op [2022-11-16 19:44:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-16 19:44:32,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-16 19:44:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:44:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-16 19:44:32,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-16 19:44:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-16 19:44:32,925 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-16 19:44:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_wol [2022-11-16 19:44:32,925 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_wol [2022-11-16 19:44:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-16 19:44:32,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-16 19:44:32,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-16 19:44:32,928 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-16 19:44:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-16 19:44:32,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-16 19:44:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_multicast [2022-11-16 19:44:32,929 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_multicast [2022-11-16 19:44:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure set_register [2022-11-16 19:44:32,929 INFO L138 BoogieDeclarations]: Found implementation of procedure set_register [2022-11-16 19:44:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 19:44:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-16 19:44:32,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-16 19:44:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:44:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-16 19:44:32,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-16 19:44:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 19:44:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-16 19:44:32,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-16 19:44:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-16 19:44:32,933 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-16 19:44:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-16 19:44:32,934 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-16 19:44:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-16 19:44:32,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-16 19:44:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-16 19:44:32,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-16 19:44:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-16 19:44:32,935 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-16 19:44:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-16 19:44:32,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-16 19:44:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-16 19:44:32,937 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-16 19:44:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:44:32,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:44:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure read_bulk_callback [2022-11-16 19:44:32,938 INFO L138 BoogieDeclarations]: Found implementation of procedure read_bulk_callback [2022-11-16 19:44:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-16 19:44:32,938 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-16 19:44:32,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 19:44:32,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 19:44:32,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-16 19:44:32,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-16 19:44:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure write_mii_word [2022-11-16 19:44:32,941 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mii_word [2022-11-16 19:44:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-16 19:44:32,942 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-16 19:44:32,942 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2022-11-16 19:44:32,942 INFO L138 BoogieDeclarations]: Found implementation of procedure strsep [2022-11-16 19:44:32,943 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-16 19:44:32,943 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-16 19:44:32,943 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_open [2022-11-16 19:44:32,944 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_open [2022-11-16 19:44:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-16 19:44:32,944 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-16 19:44:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-16 19:44:32,944 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-16 19:44:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:44:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure read_eprom_word [2022-11-16 19:44:32,945 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eprom_word [2022-11-16 19:44:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-16 19:44:32,946 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-16 19:44:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 19:44:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_nway_reset [2022-11-16 19:44:32,948 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_nway_reset [2022-11-16 19:44:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_resume [2022-11-16 19:44:32,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_resume [2022-11-16 19:44:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 19:44:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_tx_timeout [2022-11-16 19:44:32,954 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_tx_timeout [2022-11-16 19:44:32,954 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-16 19:44:32,956 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-16 19:44:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-16 19:44:32,956 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-16 19:44:32,961 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2022-11-16 19:44:32,961 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2022-11-16 19:44:32,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-16 19:44:32,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-16 19:44:32,962 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-16 19:44:32,962 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-16 19:44:32,962 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-16 19:44:32,962 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-16 19:44:32,963 INFO L130 BoogieDeclarations]: Found specification of procedure intr_callback [2022-11-16 19:44:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_callback [2022-11-16 19:44:32,963 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb_ip_align [2022-11-16 19:44:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb_ip_align [2022-11-16 19:44:32,963 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-16 19:44:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-16 19:44:32,964 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-16 19:44:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-16 19:44:32,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2022-11-16 19:44:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2022-11-16 19:44:32,964 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 19:44:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 19:44:32,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:44:32,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 19:44:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 19:44:32,965 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-16 19:44:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-16 19:44:32,966 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-11-16 19:44:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-11-16 19:44:32,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-16 19:44:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-16 19:44:32,966 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_close [2022-11-16 19:44:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_close [2022-11-16 19:44:32,967 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2022-11-16 19:44:32,967 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2022-11-16 19:44:32,967 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-16 19:44:32,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2022-11-16 19:44:32,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2022-11-16 19:44:32,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:44:32,968 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2022-11-16 19:44:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2022-11-16 19:44:32,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-16 19:44:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-16 19:44:34,076 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:44:34,080 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:44:35,060 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-16 19:44:42,673 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-16 19:44:43,331 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:44:44,783 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:44:44,784 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 19:44:44,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:44:44 BoogieIcfgContainer [2022-11-16 19:44:44,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:44:44,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:44:44,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:44:44,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:44:44,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:44:27" (1/3) ... [2022-11-16 19:44:44,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1783e09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:44:44, skipping insertion in model container [2022-11-16 19:44:44,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:31" (2/3) ... [2022-11-16 19:44:44,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1783e09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:44:44, skipping insertion in model container [2022-11-16 19:44:44,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:44:44" (3/3) ... [2022-11-16 19:44:44,806 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i [2022-11-16 19:44:44,833 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:44:44,833 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 19:44:44,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:44:44,980 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;@3ae19a6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:44:44,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 19:44:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 1028 states, 635 states have (on average 1.325984251968504) internal successors, (842), 643 states have internal predecessors, (842), 322 states have call successors, (322), 71 states have call predecessors, (322), 70 states have return successors, (316), 314 states have call predecessors, (316), 316 states have call successors, (316) [2022-11-16 19:44:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-16 19:44:45,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:44:45,037 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:44:45,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:44:45,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:44:45,044 INFO L85 PathProgramCache]: Analyzing trace with hash -70123771, now seen corresponding path program 1 times [2022-11-16 19:44:45,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:44:45,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050663399] [2022-11-16 19:44:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:44:45,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:44:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:44:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-16 19:44:46,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:44:46,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050663399] [2022-11-16 19:44:46,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050663399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:44:46,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:44:46,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:44:46,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391795875] [2022-11-16 19:44:46,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:44:46,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:44:46,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:44:46,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:44:46,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:44:46,743 INFO L87 Difference]: Start difference. First operand has 1028 states, 635 states have (on average 1.325984251968504) internal successors, (842), 643 states have internal predecessors, (842), 322 states have call successors, (322), 71 states have call predecessors, (322), 70 states have return successors, (316), 314 states have call predecessors, (316), 316 states have call successors, (316) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 19:44:52,340 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 [] [2022-11-16 19:44:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:44:52,585 INFO L93 Difference]: Finished difference Result 2868 states and 4163 transitions. [2022-11-16 19:44:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:44:52,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 146 [2022-11-16 19:44:52,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:44:52,627 INFO L225 Difference]: With dead ends: 2868 [2022-11-16 19:44:52,628 INFO L226 Difference]: Without dead ends: 1800 [2022-11-16 19:44:52,648 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 [2022-11-16 19:44:52,652 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 1193 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:44:52,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 2785 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 474 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-16 19:44:52,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2022-11-16 19:44:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1796. [2022-11-16 19:44:53,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1134 states have (on average 1.3209876543209877) internal successors, (1498), 1144 states have internal predecessors, (1498), 528 states have call successors, (528), 133 states have call predecessors, (528), 133 states have return successors, (528), 524 states have call predecessors, (528), 528 states have call successors, (528) [2022-11-16 19:44:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2554 transitions. [2022-11-16 19:44:53,138 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2554 transitions. Word has length 146 [2022-11-16 19:44:53,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:44:53,142 INFO L495 AbstractCegarLoop]: Abstraction has 1796 states and 2554 transitions. [2022-11-16 19:44:53,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 19:44:53,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2554 transitions. [2022-11-16 19:44:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-16 19:44:53,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:44:53,166 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:44:53,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:44:53,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:44:53,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:44:53,170 INFO L85 PathProgramCache]: Analyzing trace with hash 624868621, now seen corresponding path program 1 times [2022-11-16 19:44:53,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:44:53,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260531998] [2022-11-16 19:44:53,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:44:53,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:44:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:44:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-16 19:44:54,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:44:54,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260531998] [2022-11-16 19:44:54,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260531998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:44:54,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:44:54,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:44:54,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042144502] [2022-11-16 19:44:54,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:44:54,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:44:54,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:44:54,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:44:54,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:44:54,029 INFO L87 Difference]: Start difference. First operand 1796 states and 2554 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 19:44:57,524 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 [] [2022-11-16 19:44:59,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:44:59,716 INFO L93 Difference]: Finished difference Result 4864 states and 6864 transitions. [2022-11-16 19:44:59,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:44:59,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 158 [2022-11-16 19:44:59,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:44:59,748 INFO L225 Difference]: With dead ends: 4864 [2022-11-16 19:44:59,749 INFO L226 Difference]: Without dead ends: 3093 [2022-11-16 19:44:59,759 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 [2022-11-16 19:44:59,762 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 929 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:44:59,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 2519 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 494 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-16 19:44:59,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2022-11-16 19:45:00,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 3089. [2022-11-16 19:45:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3089 states, 1942 states have (on average 1.305870236869207) internal successors, (2536), 1958 states have internal predecessors, (2536), 896 states have call successors, (896), 250 states have call predecessors, (896), 250 states have return successors, (902), 887 states have call predecessors, (902), 896 states have call successors, (902) [2022-11-16 19:45:00,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3089 states to 3089 states and 4334 transitions. [2022-11-16 19:45:00,054 INFO L78 Accepts]: Start accepts. Automaton has 3089 states and 4334 transitions. Word has length 158 [2022-11-16 19:45:00,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:00,055 INFO L495 AbstractCegarLoop]: Abstraction has 3089 states and 4334 transitions. [2022-11-16 19:45:00,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 19:45:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3089 states and 4334 transitions. [2022-11-16 19:45:00,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-16 19:45:00,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:00,062 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:00,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:45:00,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:00,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:00,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1637582197, now seen corresponding path program 1 times [2022-11-16 19:45:00,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:00,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226359474] [2022-11-16 19:45:00,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:00,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-16 19:45:00,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:00,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226359474] [2022-11-16 19:45:00,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226359474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:00,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:00,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:45:00,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873213787] [2022-11-16 19:45:00,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:00,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:45:00,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:00,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:45:00,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:45:00,894 INFO L87 Difference]: Start difference. First operand 3089 states and 4334 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 19:45:05,698 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 [] [2022-11-16 19:45:06,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:06,612 INFO L93 Difference]: Finished difference Result 7285 states and 10224 transitions. [2022-11-16 19:45:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:45:06,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 161 [2022-11-16 19:45:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:06,639 INFO L225 Difference]: With dead ends: 7285 [2022-11-16 19:45:06,639 INFO L226 Difference]: Without dead ends: 4221 [2022-11-16 19:45:06,652 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 [2022-11-16 19:45:06,653 INFO L413 NwaCegarLoop]: 1480 mSDtfsCounter, 591 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:06,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 2637 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 577 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-16 19:45:06,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2022-11-16 19:45:06,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 4211. [2022-11-16 19:45:06,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4211 states, 2698 states have (on average 1.3113417346182357) internal successors, (3538), 2732 states have internal predecessors, (3538), 1165 states have call successors, (1165), 347 states have call predecessors, (1165), 347 states have return successors, (1171), 1142 states have call predecessors, (1171), 1165 states have call successors, (1171) [2022-11-16 19:45:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 5874 transitions. [2022-11-16 19:45:06,878 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 5874 transitions. Word has length 161 [2022-11-16 19:45:06,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:06,879 INFO L495 AbstractCegarLoop]: Abstraction has 4211 states and 5874 transitions. [2022-11-16 19:45:06,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 19:45:06,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 5874 transitions. [2022-11-16 19:45:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-16 19:45:06,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:06,884 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 12, 12, 12, 12, 12, 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] [2022-11-16 19:45:06,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:45:06,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:06,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:06,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1777273557, now seen corresponding path program 1 times [2022-11-16 19:45:06,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:06,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775705066] [2022-11-16 19:45:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:06,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2022-11-16 19:45:07,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:07,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775705066] [2022-11-16 19:45:07,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775705066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:07,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:07,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:45:07,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36494522] [2022-11-16 19:45:07,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:07,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:45:07,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:07,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:45:07,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:45:07,486 INFO L87 Difference]: Start difference. First operand 4211 states and 5874 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-16 19:45:11,572 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 [] [2022-11-16 19:45:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:12,533 INFO L93 Difference]: Finished difference Result 12427 states and 17306 transitions. [2022-11-16 19:45:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:45:12,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 160 [2022-11-16 19:45:12,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:12,584 INFO L225 Difference]: With dead ends: 12427 [2022-11-16 19:45:12,585 INFO L226 Difference]: Without dead ends: 8241 [2022-11-16 19:45:12,605 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 [2022-11-16 19:45:12,606 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1168 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:12,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 2785 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 546 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 19:45:12,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8241 states. [2022-11-16 19:45:13,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8241 to 8223. [2022-11-16 19:45:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8223 states, 5276 states have (on average 1.310841546626232) internal successors, (6916), 5348 states have internal predecessors, (6916), 2254 states have call successors, (2254), 692 states have call predecessors, (2254), 692 states have return successors, (2266), 2201 states have call predecessors, (2266), 2254 states have call successors, (2266) [2022-11-16 19:45:13,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8223 states to 8223 states and 11436 transitions. [2022-11-16 19:45:13,146 INFO L78 Accepts]: Start accepts. Automaton has 8223 states and 11436 transitions. Word has length 160 [2022-11-16 19:45:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:13,148 INFO L495 AbstractCegarLoop]: Abstraction has 8223 states and 11436 transitions. [2022-11-16 19:45:13,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-16 19:45:13,150 INFO L276 IsEmpty]: Start isEmpty. Operand 8223 states and 11436 transitions. [2022-11-16 19:45:13,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-16 19:45:13,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:13,155 INFO L195 NwaCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 3, 3, 3, 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] [2022-11-16 19:45:13,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 19:45:13,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:13,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:13,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2038891059, now seen corresponding path program 1 times [2022-11-16 19:45:13,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:13,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051927822] [2022-11-16 19:45:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:13,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2022-11-16 19:45:13,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:13,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051927822] [2022-11-16 19:45:13,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051927822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:13,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:13,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:45:13,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764608735] [2022-11-16 19:45:13,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:13,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:45:13,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:13,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:45:13,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:45:13,688 INFO L87 Difference]: Start difference. First operand 8223 states and 11436 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-16 19:45:18,232 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 [] [2022-11-16 19:45:19,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:19,103 INFO L93 Difference]: Finished difference Result 17333 states and 23982 transitions. [2022-11-16 19:45:19,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:45:19,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 175 [2022-11-16 19:45:19,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:19,159 INFO L225 Difference]: With dead ends: 17333 [2022-11-16 19:45:19,159 INFO L226 Difference]: Without dead ends: 9135 [2022-11-16 19:45:19,192 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 [2022-11-16 19:45:19,193 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 860 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:19,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2476 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 471 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-16 19:45:19,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9135 states. [2022-11-16 19:45:19,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9135 to 9133. [2022-11-16 19:45:19,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9133 states, 5836 states have (on average 1.3012337217272105) internal successors, (7594), 5910 states have internal predecessors, (7594), 2484 states have call successors, (2484), 812 states have call predecessors, (2484), 812 states have return successors, (2496), 2429 states have call predecessors, (2496), 2484 states have call successors, (2496) [2022-11-16 19:45:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9133 states to 9133 states and 12574 transitions. [2022-11-16 19:45:19,797 INFO L78 Accepts]: Start accepts. Automaton has 9133 states and 12574 transitions. Word has length 175 [2022-11-16 19:45:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:19,798 INFO L495 AbstractCegarLoop]: Abstraction has 9133 states and 12574 transitions. [2022-11-16 19:45:19,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-16 19:45:19,798 INFO L276 IsEmpty]: Start isEmpty. Operand 9133 states and 12574 transitions. [2022-11-16 19:45:19,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-16 19:45:19,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:19,804 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 12, 12, 12, 12, 12, 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] [2022-11-16 19:45:19,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 19:45:19,804 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:19,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:19,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1350996594, now seen corresponding path program 1 times [2022-11-16 19:45:19,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:19,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133725504] [2022-11-16 19:45:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:19,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2022-11-16 19:45:20,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:20,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133725504] [2022-11-16 19:45:20,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133725504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:20,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:20,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:45:20,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602320681] [2022-11-16 19:45:20,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:20,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:45:20,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:45:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:45:20,448 INFO L87 Difference]: Start difference. First operand 9133 states and 12574 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, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-16 19:45:25,451 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 [] [2022-11-16 19:45:26,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:26,653 INFO L93 Difference]: Finished difference Result 19994 states and 27459 transitions. [2022-11-16 19:45:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:45:26,653 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, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 179 [2022-11-16 19:45:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:26,718 INFO L225 Difference]: With dead ends: 19994 [2022-11-16 19:45:26,719 INFO L226 Difference]: Without dead ends: 10886 [2022-11-16 19:45:26,754 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 [2022-11-16 19:45:26,755 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 587 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:26,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 2751 Invalid, 578 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 575 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-16 19:45:26,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10886 states. [2022-11-16 19:45:27,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10886 to 10876. [2022-11-16 19:45:27,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10876 states, 7036 states have (on average 1.3031552018192154) internal successors, (9169), 7140 states have internal predecessors, (9169), 2857 states have call successors, (2857), 982 states have call predecessors, (2857), 982 states have return successors, (2869), 2780 states have call predecessors, (2869), 2857 states have call successors, (2869) [2022-11-16 19:45:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10876 states to 10876 states and 14895 transitions. [2022-11-16 19:45:27,387 INFO L78 Accepts]: Start accepts. Automaton has 10876 states and 14895 transitions. Word has length 179 [2022-11-16 19:45:27,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:27,388 INFO L495 AbstractCegarLoop]: Abstraction has 10876 states and 14895 transitions. [2022-11-16 19:45:27,388 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, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-16 19:45:27,389 INFO L276 IsEmpty]: Start isEmpty. Operand 10876 states and 14895 transitions. [2022-11-16 19:45:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-16 19:45:27,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:27,396 INFO L195 NwaCegarLoop]: trace histogram [18, 12, 12, 12, 12, 12, 12, 5, 5, 4, 4, 4, 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] [2022-11-16 19:45:27,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 19:45:27,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:27,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:27,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1572524835, now seen corresponding path program 1 times [2022-11-16 19:45:27,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:27,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997988720] [2022-11-16 19:45:27,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:27,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-16 19:45:34,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:34,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997988720] [2022-11-16 19:45:34,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997988720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:45:34,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026453783] [2022-11-16 19:45:34,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:34,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:45:34,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:45:34,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:45:34,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:45:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:36,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 5979 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 19:45:36,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:47,796 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2022-11-16 19:45:47,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:45:47,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026453783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:47,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:45:47,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-16 19:45:47,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208333017] [2022-11-16 19:45:47,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:47,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:45:47,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:47,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:45:47,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:45:47,800 INFO L87 Difference]: Start difference. First operand 10876 states and 14895 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-16 19:45:55,054 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 [] [2022-11-16 19:45:57,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:57,572 INFO L93 Difference]: Finished difference Result 14880 states and 20283 transitions. [2022-11-16 19:45:57,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:45:57,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 221 [2022-11-16 19:45:57,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:57,649 INFO L225 Difference]: With dead ends: 14880 [2022-11-16 19:45:57,650 INFO L226 Difference]: Without dead ends: 14878 [2022-11-16 19:45:57,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-16 19:45:57,661 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 863 mSDsluCounter, 4333 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 5720 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:57,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 5720 Invalid, 1492 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1491 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-11-16 19:45:57,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14878 states. [2022-11-16 19:45:58,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14878 to 14862. [2022-11-16 19:45:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14862 states, 9596 states have (on average 1.291162984576907) internal successors, (12390), 9742 states have internal predecessors, (12390), 3911 states have call successors, (3911), 1354 states have call predecessors, (3911), 1354 states have return successors, (3923), 3798 states have call predecessors, (3923), 3911 states have call successors, (3923) [2022-11-16 19:45:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14862 states to 14862 states and 20224 transitions. [2022-11-16 19:45:58,791 INFO L78 Accepts]: Start accepts. Automaton has 14862 states and 20224 transitions. Word has length 221 [2022-11-16 19:45:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:58,792 INFO L495 AbstractCegarLoop]: Abstraction has 14862 states and 20224 transitions. [2022-11-16 19:45:58,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-16 19:45:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 14862 states and 20224 transitions. [2022-11-16 19:45:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-16 19:45:58,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:58,821 INFO L195 NwaCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 19:45:58,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:59,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:45:59,040 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:59,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:59,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1183967340, now seen corresponding path program 1 times [2022-11-16 19:45:59,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:59,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573913500] [2022-11-16 19:45:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:59,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1381 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2022-11-16 19:45:59,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:59,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573913500] [2022-11-16 19:45:59,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573913500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:59,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:59,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:45:59,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549416356] [2022-11-16 19:45:59,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:59,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:45:59,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:59,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:45:59,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:45:59,938 INFO L87 Difference]: Start difference. First operand 14862 states and 20224 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-16 19:46:03,459 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 [] [2022-11-16 19:46:06,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:46:06,178 INFO L93 Difference]: Finished difference Result 43774 states and 59520 transitions. [2022-11-16 19:46:06,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:46:06,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 447 [2022-11-16 19:46:06,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:46:06,334 INFO L225 Difference]: With dead ends: 43774 [2022-11-16 19:46:06,335 INFO L226 Difference]: Without dead ends: 28996 [2022-11-16 19:46:06,385 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 [2022-11-16 19:46:06,386 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 1076 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:46:06,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 2693 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 536 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-16 19:46:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28996 states. [2022-11-16 19:46:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28996 to 28958. [2022-11-16 19:46:08,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28958 states, 18726 states have (on average 1.29168001708854) internal successors, (24188), 19022 states have internal predecessors, (24188), 7553 states have call successors, (7553), 2678 states have call predecessors, (7553), 2678 states have return successors, (7601), 7320 states have call predecessors, (7601), 7553 states have call successors, (7601) [2022-11-16 19:46:08,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28958 states to 28958 states and 39342 transitions. [2022-11-16 19:46:08,699 INFO L78 Accepts]: Start accepts. Automaton has 28958 states and 39342 transitions. Word has length 447 [2022-11-16 19:46:08,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:46:08,700 INFO L495 AbstractCegarLoop]: Abstraction has 28958 states and 39342 transitions. [2022-11-16 19:46:08,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-16 19:46:08,701 INFO L276 IsEmpty]: Start isEmpty. Operand 28958 states and 39342 transitions. [2022-11-16 19:46:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-11-16 19:46:08,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:46:08,743 INFO L195 NwaCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 19:46:08,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 19:46:08,743 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:46:08,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:46:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1527520887, now seen corresponding path program 1 times [2022-11-16 19:46:08,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:46:08,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433933414] [2022-11-16 19:46:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:46:08,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:46:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:46:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1381 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2022-11-16 19:46:09,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:46:09,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433933414] [2022-11-16 19:46:09,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433933414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:46:09,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:46:09,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:46:09,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402079482] [2022-11-16 19:46:09,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:46:09,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:46:09,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:46:09,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:46:09,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:46:09,852 INFO L87 Difference]: Start difference. First operand 28958 states and 39342 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-16 19:46:13,832 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 [] [2022-11-16 19:46:15,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:46:15,785 INFO L93 Difference]: Finished difference Result 50083 states and 68241 transitions. [2022-11-16 19:46:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:46:15,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 446 [2022-11-16 19:46:15,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:46:15,926 INFO L225 Difference]: With dead ends: 50083 [2022-11-16 19:46:15,926 INFO L226 Difference]: Without dead ends: 28969 [2022-11-16 19:46:15,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:46:15,987 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 9 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:46:15,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2360 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 469 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-16 19:46:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28969 states. [2022-11-16 19:46:17,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28969 to 28963. [2022-11-16 19:46:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28963 states, 18730 states have (on average 1.291671115856914) internal successors, (24193), 19026 states have internal predecessors, (24193), 7554 states have call successors, (7554), 2678 states have call predecessors, (7554), 2678 states have return successors, (7602), 7321 states have call predecessors, (7602), 7554 states have call successors, (7602) [2022-11-16 19:46:17,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28963 states to 28963 states and 39349 transitions. [2022-11-16 19:46:17,782 INFO L78 Accepts]: Start accepts. Automaton has 28963 states and 39349 transitions. Word has length 446 [2022-11-16 19:46:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:46:17,783 INFO L495 AbstractCegarLoop]: Abstraction has 28963 states and 39349 transitions. [2022-11-16 19:46:17,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-16 19:46:17,784 INFO L276 IsEmpty]: Start isEmpty. Operand 28963 states and 39349 transitions. [2022-11-16 19:46:18,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-11-16 19:46:18,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:46:18,009 INFO L195 NwaCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 13, 13, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 19:46:18,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 19:46:18,010 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:46:18,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:46:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash -228443825, now seen corresponding path program 1 times [2022-11-16 19:46:18,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:46:18,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494038041] [2022-11-16 19:46:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:46:18,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:46:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:46:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1382 trivial. 0 not checked. [2022-11-16 19:46:19,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:46:19,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494038041] [2022-11-16 19:46:19,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494038041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:46:19,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:46:19,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:46:19,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358851186] [2022-11-16 19:46:19,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:46:19,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:46:19,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:46:19,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:46:19,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:46:19,300 INFO L87 Difference]: Start difference. First operand 28963 states and 39349 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-16 19:46:23,533 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 [] [2022-11-16 19:46:25,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:46:25,826 INFO L93 Difference]: Finished difference Result 58616 states and 81499 transitions. [2022-11-16 19:46:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:46:25,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 463 [2022-11-16 19:46:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:46:26,150 INFO L225 Difference]: With dead ends: 58616 [2022-11-16 19:46:26,151 INFO L226 Difference]: Without dead ends: 37497 [2022-11-16 19:46:26,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:46:26,226 INFO L413 NwaCegarLoop]: 1710 mSDtfsCounter, 379 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:46:26,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 3020 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 566 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-16 19:46:26,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37497 states. [2022-11-16 19:46:28,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37497 to 28979. [2022-11-16 19:46:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28979 states, 18741 states have (on average 1.2916599967984632) internal successors, (24207), 19037 states have internal predecessors, (24207), 7559 states have call successors, (7559), 2678 states have call predecessors, (7559), 2678 states have return successors, (7607), 7326 states have call predecessors, (7607), 7559 states have call successors, (7607) [2022-11-16 19:46:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28979 states to 28979 states and 39373 transitions. [2022-11-16 19:46:28,553 INFO L78 Accepts]: Start accepts. Automaton has 28979 states and 39373 transitions. Word has length 463 [2022-11-16 19:46:28,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:46:28,554 INFO L495 AbstractCegarLoop]: Abstraction has 28979 states and 39373 transitions. [2022-11-16 19:46:28,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-16 19:46:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 28979 states and 39373 transitions. [2022-11-16 19:46:28,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-11-16 19:46:28,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:46:28,602 INFO L195 NwaCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 13, 13, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:46:28,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 19:46:28,602 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:46:28,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:46:28,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1903550476, now seen corresponding path program 1 times [2022-11-16 19:46:28,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:46:28,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261733691] [2022-11-16 19:46:28,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:46:28,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:46:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:46:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2022-11-16 19:46:29,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:46:29,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261733691] [2022-11-16 19:46:29,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261733691] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:46:29,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837178435] [2022-11-16 19:46:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:46:29,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:46:29,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:46:29,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:46:29,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 19:46:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:46:31,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 8314 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 19:46:31,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:46:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2022-11-16 19:46:32,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:46:32,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837178435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:46:32,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:46:32,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 19:46:32,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383630263] [2022-11-16 19:46:32,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:46:32,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:46:32,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:46:32,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:46:32,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:46:32,747 INFO L87 Difference]: Start difference. First operand 28979 states and 39373 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 3 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-16 19:46:37,055 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 [] [2022-11-16 19:46:39,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:46:39,426 INFO L93 Difference]: Finished difference Result 60255 states and 82167 transitions. [2022-11-16 19:46:39,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:46:39,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 3 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 477 [2022-11-16 19:46:39,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:46:39,606 INFO L225 Difference]: With dead ends: 60255 [2022-11-16 19:46:39,606 INFO L226 Difference]: Without dead ends: 39120 [2022-11-16 19:46:39,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:46:39,666 INFO L413 NwaCegarLoop]: 1478 mSDtfsCounter, 1119 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:46:39,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 2662 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 466 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-16 19:46:39,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39120 states. [2022-11-16 19:46:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39120 to 39082. [2022-11-16 19:46:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39082 states, 25270 states have (on average 1.2941828254847645) internal successors, (32704), 25660 states have internal predecessors, (32704), 10213 states have call successors, (10213), 3598 states have call predecessors, (10213), 3598 states have return successors, (10279), 9901 states have call predecessors, (10279), 10213 states have call successors, (10279) [2022-11-16 19:46:42,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39082 states to 39082 states and 53196 transitions. [2022-11-16 19:46:42,027 INFO L78 Accepts]: Start accepts. Automaton has 39082 states and 53196 transitions. Word has length 477 [2022-11-16 19:46:42,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:46:42,028 INFO L495 AbstractCegarLoop]: Abstraction has 39082 states and 53196 transitions. [2022-11-16 19:46:42,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 3 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-16 19:46:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand 39082 states and 53196 transitions. [2022-11-16 19:46:42,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-11-16 19:46:42,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:46:42,055 INFO L195 NwaCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 13, 13, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-11-16 19:46:42,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 19:46:42,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 19:46:42,256 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:46:42,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:46:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash -29864488, now seen corresponding path program 1 times [2022-11-16 19:46:42,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:46:42,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726390319] [2022-11-16 19:46:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:46:42,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:46:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:46:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1438 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2022-11-16 19:46:43,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:46:43,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726390319] [2022-11-16 19:46:43,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726390319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:46:43,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823920869] [2022-11-16 19:46:43,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:46:43,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:46:43,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:46:43,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:46:43,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 19:46:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:46:45,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 8453 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:46:45,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:46:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1438 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2022-11-16 19:46:45,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:46:45,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823920869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:46:45,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:46:45,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-16 19:46:45,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725763002] [2022-11-16 19:46:45,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:46:45,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:46:45,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:46:45,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:46:45,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:46:45,956 INFO L87 Difference]: Start difference. First operand 39082 states and 53196 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-16 19:46:51,257 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 [] [2022-11-16 19:46:54,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:46:54,657 INFO L93 Difference]: Finished difference Result 86366 states and 117534 transitions. [2022-11-16 19:46:54,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:46:54,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 494 [2022-11-16 19:46:54,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:46:54,834 INFO L225 Difference]: With dead ends: 86366 [2022-11-16 19:46:54,834 INFO L226 Difference]: Without dead ends: 47368 [2022-11-16 19:46:54,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:46:54,931 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 613 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:46:54,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 3925 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1090 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-16 19:46:54,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47368 states. [2022-11-16 19:46:57,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47368 to 47302. [2022-11-16 19:46:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47302 states, 30754 states have (on average 1.2958314365610977) internal successors, (39852), 31296 states have internal predecessors, (39852), 12101 states have call successors, (12101), 4446 states have call predecessors, (12101), 4446 states have return successors, (12167), 11661 states have call predecessors, (12167), 12101 states have call successors, (12167) [2022-11-16 19:46:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47302 states to 47302 states and 64120 transitions. [2022-11-16 19:46:57,646 INFO L78 Accepts]: Start accepts. Automaton has 47302 states and 64120 transitions. Word has length 494 [2022-11-16 19:46:57,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:46:57,648 INFO L495 AbstractCegarLoop]: Abstraction has 47302 states and 64120 transitions. [2022-11-16 19:46:57,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-16 19:46:57,648 INFO L276 IsEmpty]: Start isEmpty. Operand 47302 states and 64120 transitions. [2022-11-16 19:46:57,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2022-11-16 19:46:57,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:46:57,686 INFO L195 NwaCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 13, 13, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:46:57,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 19:46:57,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 19:46:57,903 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:46:57,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:46:57,904 INFO L85 PathProgramCache]: Analyzing trace with hash 528184544, now seen corresponding path program 1 times [2022-11-16 19:46:57,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:46:57,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686872926] [2022-11-16 19:46:57,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:46:57,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:46:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:46:59,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2022-11-16 19:46:59,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:46:59,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686872926] [2022-11-16 19:46:59,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686872926] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:46:59,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35371748] [2022-11-16 19:46:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:46:59,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:46:59,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:46:59,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:46:59,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 19:47:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:47:01,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 8364 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 19:47:01,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:47:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 1038 trivial. 0 not checked. [2022-11-16 19:47:02,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:47:02,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35371748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:47:02,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:47:02,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 19:47:02,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797910723] [2022-11-16 19:47:02,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:47:02,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:47:02,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:47:02,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:47:02,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:47:02,160 INFO L87 Difference]: Start difference. First operand 47302 states and 64120 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-16 19:47:05,598 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 [] [2022-11-16 19:47:09,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:47:09,875 INFO L93 Difference]: Finished difference Result 99450 states and 135508 transitions. [2022-11-16 19:47:09,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:47:09,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 491 [2022-11-16 19:47:09,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:47:10,141 INFO L225 Difference]: With dead ends: 99450 [2022-11-16 19:47:10,141 INFO L226 Difference]: Without dead ends: 61280 [2022-11-16 19:47:10,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:47:10,260 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1022 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:47:10,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 2465 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 470 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-16 19:47:10,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61280 states. [2022-11-16 19:47:13,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61280 to 61264. [2022-11-16 19:47:13,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61264 states, 40112 states have (on average 1.2884922217790187) internal successors, (51684), 40846 states have internal predecessors, (51684), 15463 states have call successors, (15463), 5688 states have call predecessors, (15463), 5688 states have return successors, (15565), 14851 states have call predecessors, (15565), 15463 states have call successors, (15565) [2022-11-16 19:47:14,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61264 states to 61264 states and 82712 transitions. [2022-11-16 19:47:14,070 INFO L78 Accepts]: Start accepts. Automaton has 61264 states and 82712 transitions. Word has length 491 [2022-11-16 19:47:14,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:47:14,072 INFO L495 AbstractCegarLoop]: Abstraction has 61264 states and 82712 transitions. [2022-11-16 19:47:14,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-16 19:47:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 61264 states and 82712 transitions. [2022-11-16 19:47:14,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-11-16 19:47:14,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:47:14,110 INFO L195 NwaCegarLoop]: trace histogram [21, 15, 15, 14, 14, 14, 14, 14, 14, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 19:47:14,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 19:47:14,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 19:47:14,323 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:47:14,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:47:14,324 INFO L85 PathProgramCache]: Analyzing trace with hash -442545895, now seen corresponding path program 1 times [2022-11-16 19:47:14,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:47:14,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115021032] [2022-11-16 19:47:14,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:47:14,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:47:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:47:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1489 trivial. 0 not checked. [2022-11-16 19:47:15,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:47:15,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115021032] [2022-11-16 19:47:15,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115021032] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:47:15,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483031033] [2022-11-16 19:47:15,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:47:15,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:47:15,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:47:15,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:47:15,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 19:47:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:47:18,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 8810 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 19:47:18,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:47:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2022-11-16 19:47:18,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:47:18,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483031033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:47:18,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:47:18,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 19:47:18,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982221989] [2022-11-16 19:47:18,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:47:18,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:47:18,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:47:18,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:47:18,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:47:18,140 INFO L87 Difference]: Start difference. First operand 61264 states and 82712 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-16 19:47:22,369 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 [] [2022-11-16 19:47:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:47:27,034 INFO L93 Difference]: Finished difference Result 135712 states and 187497 transitions. [2022-11-16 19:47:27,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:47:27,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 495 [2022-11-16 19:47:27,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:47:27,559 INFO L225 Difference]: With dead ends: 135712 [2022-11-16 19:47:27,559 INFO L226 Difference]: Without dead ends: 83580 [2022-11-16 19:47:27,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:47:27,695 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 319 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 2915 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-16 19:47:27,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 2915 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 553 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-16 19:47:27,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83580 states. [2022-11-16 19:47:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83580 to 61268. [2022-11-16 19:47:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61268 states, 40116 states have (on average 1.2884634559776649) internal successors, (51688), 40850 states have internal predecessors, (51688), 15463 states have call successors, (15463), 5688 states have call predecessors, (15463), 5688 states have return successors, (15565), 14851 states have call predecessors, (15565), 15463 states have call successors, (15565) [2022-11-16 19:47:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61268 states to 61268 states and 82716 transitions. [2022-11-16 19:47:32,159 INFO L78 Accepts]: Start accepts. Automaton has 61268 states and 82716 transitions. Word has length 495 [2022-11-16 19:47:32,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:47:32,160 INFO L495 AbstractCegarLoop]: Abstraction has 61268 states and 82716 transitions. [2022-11-16 19:47:32,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-16 19:47:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand 61268 states and 82716 transitions. [2022-11-16 19:47:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-11-16 19:47:32,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:47:32,198 INFO L195 NwaCegarLoop]: trace histogram [23, 14, 14, 14, 14, 14, 14, 14, 14, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:47:32,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 19:47:32,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:47:32,425 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:47:32,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:47:32,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1000197684, now seen corresponding path program 1 times [2022-11-16 19:47:32,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:47:32,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944769702] [2022-11-16 19:47:32,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:47:32,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:47:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:47:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1529 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 1498 trivial. 0 not checked. [2022-11-16 19:47:33,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:47:33,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944769702] [2022-11-16 19:47:33,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944769702] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:47:33,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108125257] [2022-11-16 19:47:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:47:33,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:47:33,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:47:33,658 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:47:33,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1551270a-3ab4-4ce5-a1da-521a37e209dc/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 19:47:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:47:35,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 8396 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 19:47:36,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:47:36,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1529 backedges. 487 proven. 0 refuted. 0 times theorem prover too weak. 1042 trivial. 0 not checked. [2022-11-16 19:47:36,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:47:36,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108125257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:47:36,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:47:36,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 19:47:36,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517122744] [2022-11-16 19:47:36,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:47:36,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:47:36,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:47:36,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:47:36,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:47:36,798 INFO L87 Difference]: Start difference. First operand 61268 states and 82716 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-11-16 19:47:41,152 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 []