./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c76818fb304a0b40bd70831524c213fb48469a57ba59c902bf604bd33d1e93eb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:10:11,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:10:11,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:10:11,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:10:11,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:10:11,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:10:11,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:10:11,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:10:11,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:10:11,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:10:11,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:10:11,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:10:11,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:10:11,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:10:11,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:10:11,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:10:11,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:10:11,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:10:11,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:10:11,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:10:11,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:10:11,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:10:11,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:10:11,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:10:11,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:10:11,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:10:11,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:10:11,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:10:11,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:10:11,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:10:11,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:10:11,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:10:11,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:10:11,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:10:11,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:10:11,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:10:11,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:10:11,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:10:11,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:10:11,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:10:11,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:10:11,579 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:10:11,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:10:11,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:10:11,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:10:11,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:10:11,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:10:11,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:10:11,625 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:10:11,625 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:10:11,625 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:10:11,626 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:10:11,627 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:10:11,627 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:10:11,628 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:10:11,628 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:10:11,628 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:10:11,628 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:10:11,628 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:10:11,629 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:10:11,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:10:11,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:10:11,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:10:11,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:10:11,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:10:11,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:10:11,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:10:11,633 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:10:11,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:10:11,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:10:11,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:10:11,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:10:11,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:10:11,635 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:10:11,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:10:11,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:10:11,635 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:10:11,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:10:11,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:10:11,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:10:11,636 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_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c76818fb304a0b40bd70831524c213fb48469a57ba59c902bf604bd33d1e93eb [2022-11-03 02:10:11,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:10:11,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:10:11,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:10:11,934 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:10:11,935 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:10:11,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2022-11-03 02:10:12,025 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/data/436526b82/4f6e88f9f8914ca1a0ba3a436dd462d1/FLAG087212d4b [2022-11-03 02:10:12,906 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:10:12,906 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2022-11-03 02:10:12,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/data/436526b82/4f6e88f9f8914ca1a0ba3a436dd462d1/FLAG087212d4b [2022-11-03 02:10:13,348 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/data/436526b82/4f6e88f9f8914ca1a0ba3a436dd462d1 [2022-11-03 02:10:13,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:10:13,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:10:13,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:10:13,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:10:13,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:10:13,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:10:13" (1/1) ... [2022-11-03 02:10:13,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322c8483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:13, skipping insertion in model container [2022-11-03 02:10:13,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:10:13" (1/1) ... [2022-11-03 02:10:13,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:10:13,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:10:16,187 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315653,315666] [2022-11-03 02:10:16,190 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315798,315811] [2022-11-03 02:10:16,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:10:16,255 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:10:16,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315653,315666] [2022-11-03 02:10:16,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315798,315811] [2022-11-03 02:10:16,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:10:16,888 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:10:16,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:16 WrapperNode [2022-11-03 02:10:16,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:10:16,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:10:16,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:10:16,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:10:16,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:16" (1/1) ... [2022-11-03 02:10:17,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:16" (1/1) ... [2022-11-03 02:10:17,238 INFO L138 Inliner]: procedures = 390, calls = 1855, calls flagged for inlining = 177, calls inlined = 157, statements flattened = 4250 [2022-11-03 02:10:17,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:10:17,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:10:17,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:10:17,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:10:17,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:16" (1/1) ... [2022-11-03 02:10:17,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:16" (1/1) ... [2022-11-03 02:10:17,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:16" (1/1) ... [2022-11-03 02:10:17,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:16" (1/1) ... [2022-11-03 02:10:17,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:16" (1/1) ... [2022-11-03 02:10:17,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:16" (1/1) ... [2022-11-03 02:10:17,444 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:16" (1/1) ... [2022-11-03 02:10:17,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:16" (1/1) ... [2022-11-03 02:10:17,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:10:17,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:10:17,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:10:17,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:10:17,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:16" (1/1) ... [2022-11-03 02:10:17,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:10:17,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:10:17,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:10:17,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:10:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:10:17,592 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:10:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-03 02:10:17,592 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-03 02:10:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_89 [2022-11-03 02:10:17,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_89 [2022-11-03 02:10:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:10:17,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:10:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:10:17,593 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:10:17,594 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2022-11-03 02:10:17,594 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2022-11-03 02:10:17,594 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_open [2022-11-03 02:10:17,594 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_open [2022-11-03 02:10:17,594 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_load_eeprom [2022-11-03 02:10:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_load_eeprom [2022-11-03 02:10:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:10:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_sense_lan [2022-11-03 02:10:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_sense_lan [2022-11-03 02:10:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:10:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:10:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-03 02:10:17,596 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-03 02:10:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:10:17,596 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:10:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:10:17,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:10:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:10:17,597 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:10:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:10:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 02:10:17,598 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 02:10:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-11-03 02:10:17,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-11-03 02:10:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_103 [2022-11-03 02:10:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_103 [2022-11-03 02:10:17,599 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:10:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:10:17,599 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_cascade_reset [2022-11-03 02:10:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_cascade_reset [2022-11-03 02:10:17,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:10:17,600 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:10:17,600 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:10:17,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:10:17,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:10:17,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:10:17,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:10:17,602 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:10:17,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:10:17,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:10:17,603 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:10:17,603 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rx_bm [2022-11-03 02:10:17,604 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rx_bm [2022-11-03 02:10:17,604 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_BM_shutdown [2022-11-03 02:10:17,604 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_BM_shutdown [2022-11-03 02:10:17,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:10:17,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:10:17,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:10:17,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:10:17,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:10:17,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:10:17,605 INFO L130 BoogieDeclarations]: Found specification of procedure wait [2022-11-03 02:10:17,605 INFO L138 BoogieDeclarations]: Found implementation of procedure wait [2022-11-03 02:10:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:10:17,606 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:10:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_hwinit [2022-11-03 02:10:17,606 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_hwinit [2022-11-03 02:10:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:10:17,606 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:10:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_whatever [2022-11-03 02:10:17,607 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_whatever [2022-11-03 02:10:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_close [2022-11-03 02:10:17,608 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_close [2022-11-03 02:10:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:10:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_stop_interface [2022-11-03 02:10:17,608 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_stop_interface [2022-11-03 02:10:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_check_lan [2022-11-03 02:10:17,608 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_check_lan [2022-11-03 02:10:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:10:17,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:10:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:10:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:10:17,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:10:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:10:17,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:10:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:10:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:10:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:10:17,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:10:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:10:17,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:10:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-03 02:10:17,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-03 02:10:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-03 02:10:17,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-03 02:10:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 02:10:17,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 02:10:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rxfill [2022-11-03 02:10:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rxfill [2022-11-03 02:10:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:10:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:10:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 02:10:17,615 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 02:10:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:10:17,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:10:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:10:17,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:10:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_update_stats [2022-11-03 02:10:17,617 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_update_stats [2022-11-03 02:10:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:10:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:10:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:10:17,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:10:17,621 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:10:17,622 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:10:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:10:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:10:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:10:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:10:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:10:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:10:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:10:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 02:10:17,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 02:10:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-03 02:10:17,683 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-03 02:10:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:10:17,683 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:10:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 02:10:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 02:10:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:10:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:10:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-03 02:10:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-03 02:10:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_pci_remove [2022-11-03 02:10:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_pci_remove [2022-11-03 02:10:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_build_rx_pdl [2022-11-03 02:10:17,685 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_build_rx_pdl [2022-11-03 02:10:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-03 02:10:17,685 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-03 02:10:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:10:17,685 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:10:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-03 02:10:17,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-03 02:10:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_hp100_private [2022-11-03 02:10:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_hp100_private [2022-11-03 02:10:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:10:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2022-11-03 02:10:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2022-11-03 02:10:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:10:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:10:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_hp100_private [2022-11-03 02:10:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_hp100_private [2022-11-03 02:10:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-11-03 02:10:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-11-03 02:10:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 02:10:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 02:10:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:10:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:10:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_set_multicast_list [2022-11-03 02:10:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_set_multicast_list [2022-11-03 02:10:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_start_interface [2022-11-03 02:10:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_start_interface [2022-11-03 02:10:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 02:10:17,688 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 02:10:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_clean_txring [2022-11-03 02:10:17,688 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_clean_txring [2022-11-03 02:10:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-03 02:10:17,688 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-03 02:10:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:10:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-03 02:10:17,688 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-03 02:10:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:10:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:10:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_login_to_vg_hub [2022-11-03 02:10:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_login_to_vg_hub [2022-11-03 02:10:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-03 02:10:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-03 02:10:18,523 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:10:18,527 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:10:18,834 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:10:22,413 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:10:22,415 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:10:22,651 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8566-1: assume -9223372036854775808 <= #t~ret676#1 && #t~ret676#1 <= 9223372036854775807;havoc #t~ret676#1; [2022-11-03 02:10:22,651 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8566: SUMMARY for call #t~ret676#1 := schedule_timeout_interruptible(1); srcloc: null [2022-11-03 02:10:22,652 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume 0 == (if 0 == ~tmp___4~7#1 then 0 else (if 1 == ~tmp___4~7#1 then 0 else ~bitwiseAnd(~tmp___4~7#1, 2096896))) % 18446744073709551616; [2022-11-03 02:10:22,652 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !(0 == (if 0 == ~tmp___4~7#1 then 0 else (if 1 == ~tmp___4~7#1 then 0 else ~bitwiseAnd(~tmp___4~7#1, 2096896))) % 18446744073709551616); [2022-11-03 02:10:22,652 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8570: assume (if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0; [2022-11-03 02:10:22,652 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8570: assume !((if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0); [2022-11-03 02:10:22,857 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:10:24,122 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:10:24,122 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:10:24,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:10:24 BoogieIcfgContainer [2022-11-03 02:10:24,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:10:24,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:10:24,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:10:24,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:10:24,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:10:13" (1/3) ... [2022-11-03 02:10:24,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791aabc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:10:24, skipping insertion in model container [2022-11-03 02:10:24,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:16" (2/3) ... [2022-11-03 02:10:24,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791aabc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:10:24, skipping insertion in model container [2022-11-03 02:10:24,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:10:24" (3/3) ... [2022-11-03 02:10:24,136 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2022-11-03 02:10:24,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:10:24,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:10:24,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:10:24,240 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;@190a04d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:10:24,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:10:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 1399 states, 751 states have (on average 1.315579227696405) internal successors, (988), 799 states have internal predecessors, (988), 569 states have call successors, (569), 80 states have call predecessors, (569), 79 states have return successors, (564), 548 states have call predecessors, (564), 564 states have call successors, (564) [2022-11-03 02:10:24,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 02:10:24,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:24,280 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 02:10:24,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:24,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:24,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1809983140, now seen corresponding path program 1 times [2022-11-03 02:10:24,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:24,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402980200] [2022-11-03 02:10:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:24,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-03 02:10:25,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:25,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402980200] [2022-11-03 02:10:25,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402980200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:25,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:25,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:10:25,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335441438] [2022-11-03 02:10:25,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:25,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:10:25,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:25,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:10:25,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:25,348 INFO L87 Difference]: Start difference. First operand has 1399 states, 751 states have (on average 1.315579227696405) internal successors, (988), 799 states have internal predecessors, (988), 569 states have call successors, (569), 80 states have call predecessors, (569), 79 states have return successors, (564), 548 states have call predecessors, (564), 564 states have call successors, (564) 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, (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) [2022-11-03 02:10:27,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:27,112 INFO L93 Difference]: Finished difference Result 3996 states and 6127 transitions. [2022-11-03 02:10:27,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:10:27,115 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, (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 102 [2022-11-03 02:10:27,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:27,169 INFO L225 Difference]: With dead ends: 3996 [2022-11-03 02:10:27,169 INFO L226 Difference]: Without dead ends: 2552 [2022-11-03 02:10:27,192 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 [2022-11-03 02:10:27,196 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 1881 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:27,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 4573 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 02:10:27,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2022-11-03 02:10:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2548. [2022-11-03 02:10:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 1371 states have (on average 1.3078045222465353) internal successors, (1793), 1460 states have internal predecessors, (1793), 1030 states have call successors, (1030), 148 states have call predecessors, (1030), 146 states have return successors, (1037), 993 states have call predecessors, (1037), 1030 states have call successors, (1037) [2022-11-03 02:10:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 3860 transitions. [2022-11-03 02:10:27,722 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 3860 transitions. Word has length 102 [2022-11-03 02:10:27,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:27,723 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 3860 transitions. [2022-11-03 02:10:27,723 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, (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) [2022-11-03 02:10:27,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 3860 transitions. [2022-11-03 02:10:27,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-03 02:10:27,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:27,753 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:27,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:10:27,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:27,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:27,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1114091983, now seen corresponding path program 1 times [2022-11-03 02:10:27,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:27,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301768348] [2022-11-03 02:10:27,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:27,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 02:10:28,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:28,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301768348] [2022-11-03 02:10:28,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301768348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:28,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:28,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:10:28,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329812193] [2022-11-03 02:10:28,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:28,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:10:28,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:28,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:10:28,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:28,228 INFO L87 Difference]: Start difference. First operand 2548 states and 3860 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:10:29,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:29,810 INFO L93 Difference]: Finished difference Result 6602 states and 9979 transitions. [2022-11-03 02:10:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:10:29,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 151 [2022-11-03 02:10:29,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:29,841 INFO L225 Difference]: With dead ends: 6602 [2022-11-03 02:10:29,841 INFO L226 Difference]: Without dead ends: 4063 [2022-11-03 02:10:29,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:29,856 INFO L413 NwaCegarLoop]: 2203 mSDtfsCounter, 1218 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 4040 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:29,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 4040 Invalid, 446 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:10:29,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2022-11-03 02:10:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4059. [2022-11-03 02:10:30,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4059 states, 2214 states have (on average 1.3062330623306233) internal successors, (2892), 2355 states have internal predecessors, (2892), 1600 states have call successors, (1600), 246 states have call predecessors, (1600), 244 states have return successors, (1607), 1545 states have call predecessors, (1607), 1600 states have call successors, (1607) [2022-11-03 02:10:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4059 states to 4059 states and 6099 transitions. [2022-11-03 02:10:30,163 INFO L78 Accepts]: Start accepts. Automaton has 4059 states and 6099 transitions. Word has length 151 [2022-11-03 02:10:30,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:30,165 INFO L495 AbstractCegarLoop]: Abstraction has 4059 states and 6099 transitions. [2022-11-03 02:10:30,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:10:30,166 INFO L276 IsEmpty]: Start isEmpty. Operand 4059 states and 6099 transitions. [2022-11-03 02:10:30,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-03 02:10:30,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:30,181 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 5, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:30,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:10:30,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:30,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:30,183 INFO L85 PathProgramCache]: Analyzing trace with hash 115672791, now seen corresponding path program 1 times [2022-11-03 02:10:30,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:30,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157750214] [2022-11-03 02:10:30,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:30,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-03 02:10:30,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:30,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157750214] [2022-11-03 02:10:30,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157750214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:30,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:30,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:10:30,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608554666] [2022-11-03 02:10:30,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:30,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:10:30,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:30,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:10:30,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:30,488 INFO L87 Difference]: Start difference. First operand 4059 states and 6099 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-03 02:10:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:32,190 INFO L93 Difference]: Finished difference Result 10783 states and 16146 transitions. [2022-11-03 02:10:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:10:32,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 204 [2022-11-03 02:10:32,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:32,253 INFO L225 Difference]: With dead ends: 10783 [2022-11-03 02:10:32,253 INFO L226 Difference]: Without dead ends: 6733 [2022-11-03 02:10:32,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:32,286 INFO L413 NwaCegarLoop]: 2369 mSDtfsCounter, 1859 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 4194 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:32,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 4194 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 02:10:32,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6733 states. [2022-11-03 02:10:32,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6733 to 6728. [2022-11-03 02:10:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6728 states, 3681 states have (on average 1.2961151860907363) internal successors, (4771), 3913 states have internal predecessors, (4771), 2625 states have call successors, (2625), 426 states have call predecessors, (2625), 421 states have return successors, (2640), 2531 states have call predecessors, (2640), 2625 states have call successors, (2640) [2022-11-03 02:10:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6728 states to 6728 states and 10036 transitions. [2022-11-03 02:10:32,878 INFO L78 Accepts]: Start accepts. Automaton has 6728 states and 10036 transitions. Word has length 204 [2022-11-03 02:10:32,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:32,879 INFO L495 AbstractCegarLoop]: Abstraction has 6728 states and 10036 transitions. [2022-11-03 02:10:32,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-03 02:10:32,880 INFO L276 IsEmpty]: Start isEmpty. Operand 6728 states and 10036 transitions. [2022-11-03 02:10:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-03 02:10:32,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:32,889 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-11-03 02:10:32,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:10:32,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:32,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:32,891 INFO L85 PathProgramCache]: Analyzing trace with hash 802860740, now seen corresponding path program 1 times [2022-11-03 02:10:32,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:32,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6855483] [2022-11-03 02:10:32,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:32,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-03 02:10:33,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:33,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6855483] [2022-11-03 02:10:33,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6855483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:33,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:33,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:10:33,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119054127] [2022-11-03 02:10:33,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:33,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:10:33,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:33,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:10:33,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:33,493 INFO L87 Difference]: Start difference. First operand 6728 states and 10036 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-03 02:10:36,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:36,020 INFO L93 Difference]: Finished difference Result 15371 states and 22887 transitions. [2022-11-03 02:10:36,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:10:36,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 196 [2022-11-03 02:10:36,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:36,097 INFO L225 Difference]: With dead ends: 15371 [2022-11-03 02:10:36,098 INFO L226 Difference]: Without dead ends: 8652 [2022-11-03 02:10:36,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:36,146 INFO L413 NwaCegarLoop]: 2984 mSDtfsCounter, 1227 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 4813 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:36,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 4813 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 02:10:36,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8652 states. [2022-11-03 02:10:36,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8652 to 8646. [2022-11-03 02:10:36,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8646 states, 4778 states have (on average 1.2925910422771034) internal successors, (6176), 5071 states have internal predecessors, (6176), 3304 states have call successors, (3304), 568 states have call predecessors, (3304), 563 states have return successors, (3319), 3190 states have call predecessors, (3319), 3304 states have call successors, (3319) [2022-11-03 02:10:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 12799 transitions. [2022-11-03 02:10:36,852 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 12799 transitions. Word has length 196 [2022-11-03 02:10:36,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:36,852 INFO L495 AbstractCegarLoop]: Abstraction has 8646 states and 12799 transitions. [2022-11-03 02:10:36,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-03 02:10:36,853 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 12799 transitions. [2022-11-03 02:10:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-03 02:10:36,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:36,863 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 02:10:36,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:10:36,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:36,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash -914103065, now seen corresponding path program 1 times [2022-11-03 02:10:36,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:36,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179477493] [2022-11-03 02:10:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:36,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2022-11-03 02:10:37,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:37,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179477493] [2022-11-03 02:10:37,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179477493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:37,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:37,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:10:37,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206667347] [2022-11-03 02:10:37,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:37,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:10:37,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:37,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:10:37,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:37,350 INFO L87 Difference]: Start difference. First operand 8646 states and 12799 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:10:38,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:38,887 INFO L93 Difference]: Finished difference Result 17337 states and 25669 transitions. [2022-11-03 02:10:38,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:10:38,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 259 [2022-11-03 02:10:38,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:38,991 INFO L225 Difference]: With dead ends: 17337 [2022-11-03 02:10:38,992 INFO L226 Difference]: Without dead ends: 8700 [2022-11-03 02:10:39,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:39,087 INFO L413 NwaCegarLoop]: 1872 mSDtfsCounter, 7 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3734 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:39,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3734 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 02:10:39,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8700 states. [2022-11-03 02:10:39,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8700 to 8652. [2022-11-03 02:10:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8652 states, 4784 states have (on average 1.2922240802675586) internal successors, (6182), 5077 states have internal predecessors, (6182), 3304 states have call successors, (3304), 568 states have call predecessors, (3304), 563 states have return successors, (3319), 3190 states have call predecessors, (3319), 3304 states have call successors, (3319) [2022-11-03 02:10:39,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 12805 transitions. [2022-11-03 02:10:39,850 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 12805 transitions. Word has length 259 [2022-11-03 02:10:39,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:39,852 INFO L495 AbstractCegarLoop]: Abstraction has 8652 states and 12805 transitions. [2022-11-03 02:10:39,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:10:39,852 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 12805 transitions. [2022-11-03 02:10:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-03 02:10:39,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:39,862 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:39,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:10:39,862 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:39,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:39,863 INFO L85 PathProgramCache]: Analyzing trace with hash -435276351, now seen corresponding path program 1 times [2022-11-03 02:10:39,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:39,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041030187] [2022-11-03 02:10:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:39,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-11-03 02:10:40,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:40,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041030187] [2022-11-03 02:10:40,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041030187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:40,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:40,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:10:40,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004494035] [2022-11-03 02:10:40,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:40,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:10:40,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:40,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:10:40,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:40,471 INFO L87 Difference]: Start difference. First operand 8652 states and 12805 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-03 02:10:42,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:42,991 INFO L93 Difference]: Finished difference Result 20858 states and 30981 transitions. [2022-11-03 02:10:42,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:10:42,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 262 [2022-11-03 02:10:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:43,086 INFO L225 Difference]: With dead ends: 20858 [2022-11-03 02:10:43,086 INFO L226 Difference]: Without dead ends: 12215 [2022-11-03 02:10:43,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:43,137 INFO L413 NwaCegarLoop]: 3240 mSDtfsCounter, 1840 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 4820 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:43,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 4820 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 02:10:43,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states. [2022-11-03 02:10:44,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12215 to 12209. [2022-11-03 02:10:44,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12209 states, 6668 states have (on average 1.2907918416316737) internal successors, (8607), 7096 states have internal predecessors, (8607), 4755 states have call successors, (4755), 790 states have call predecessors, (4755), 785 states have return successors, (4770), 4587 states have call predecessors, (4770), 4755 states have call successors, (4770) [2022-11-03 02:10:44,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12209 states to 12209 states and 18132 transitions. [2022-11-03 02:10:44,274 INFO L78 Accepts]: Start accepts. Automaton has 12209 states and 18132 transitions. Word has length 262 [2022-11-03 02:10:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:44,275 INFO L495 AbstractCegarLoop]: Abstraction has 12209 states and 18132 transitions. [2022-11-03 02:10:44,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-03 02:10:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 12209 states and 18132 transitions. [2022-11-03 02:10:44,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-03 02:10:44,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:44,291 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 02:10:44,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:10:44,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:44,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:44,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1227295135, now seen corresponding path program 1 times [2022-11-03 02:10:44,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:44,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35381033] [2022-11-03 02:10:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:44,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2022-11-03 02:10:44,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:44,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35381033] [2022-11-03 02:10:44,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35381033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:44,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:44,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:10:44,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132617794] [2022-11-03 02:10:44,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:44,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:10:44,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:10:44,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:44,959 INFO L87 Difference]: Start difference. First operand 12209 states and 18132 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-03 02:10:47,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:47,845 INFO L93 Difference]: Finished difference Result 26341 states and 39088 transitions. [2022-11-03 02:10:47,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:10:47,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 306 [2022-11-03 02:10:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:47,961 INFO L225 Difference]: With dead ends: 26341 [2022-11-03 02:10:47,962 INFO L226 Difference]: Without dead ends: 14141 [2022-11-03 02:10:48,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:48,047 INFO L413 NwaCegarLoop]: 2871 mSDtfsCounter, 1236 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 4700 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:48,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 4700 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 02:10:48,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14141 states. [2022-11-03 02:10:49,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14141 to 14135. [2022-11-03 02:10:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14135 states, 7782 states have (on average 1.2907992803906452) internal successors, (10045), 8271 states have internal predecessors, (10045), 5426 states have call successors, (5426), 931 states have call predecessors, (5426), 926 states have return successors, (5441), 5238 states have call predecessors, (5441), 5426 states have call successors, (5441) [2022-11-03 02:10:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14135 states to 14135 states and 20912 transitions. [2022-11-03 02:10:49,516 INFO L78 Accepts]: Start accepts. Automaton has 14135 states and 20912 transitions. Word has length 306 [2022-11-03 02:10:49,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:49,518 INFO L495 AbstractCegarLoop]: Abstraction has 14135 states and 20912 transitions. [2022-11-03 02:10:49,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-03 02:10:49,518 INFO L276 IsEmpty]: Start isEmpty. Operand 14135 states and 20912 transitions. [2022-11-03 02:10:49,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-11-03 02:10:49,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:49,533 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:49,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:10:49,534 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:49,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:49,535 INFO L85 PathProgramCache]: Analyzing trace with hash -645161155, now seen corresponding path program 1 times [2022-11-03 02:10:49,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:49,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196719148] [2022-11-03 02:10:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:49,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2022-11-03 02:10:50,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:50,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196719148] [2022-11-03 02:10:50,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196719148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:50,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:50,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:10:50,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041655467] [2022-11-03 02:10:50,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:50,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:10:50,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:50,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:10:50,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:10:50,022 INFO L87 Difference]: Start difference. First operand 14135 states and 20912 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 02:10:54,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:54,047 INFO L93 Difference]: Finished difference Result 31038 states and 45900 transitions. [2022-11-03 02:10:54,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:10:54,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 341 [2022-11-03 02:10:54,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:54,325 INFO L225 Difference]: With dead ends: 31038 [2022-11-03 02:10:54,326 INFO L226 Difference]: Without dead ends: 16912 [2022-11-03 02:10:54,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:10:54,407 INFO L413 NwaCegarLoop]: 2958 mSDtfsCounter, 1324 mSDsluCounter, 8476 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 10695 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:54,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 10695 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 02:10:54,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16912 states. [2022-11-03 02:10:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16912 to 16898. [2022-11-03 02:10:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16898 states, 9311 states have (on average 1.2910535925249704) internal successors, (12021), 9894 states have internal predecessors, (12021), 6466 states have call successors, (6466), 1126 states have call predecessors, (6466), 1120 states have return successors, (6485), 6249 states have call predecessors, (6485), 6466 states have call successors, (6485) [2022-11-03 02:10:55,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16898 states to 16898 states and 24972 transitions. [2022-11-03 02:10:55,810 INFO L78 Accepts]: Start accepts. Automaton has 16898 states and 24972 transitions. Word has length 341 [2022-11-03 02:10:55,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:55,812 INFO L495 AbstractCegarLoop]: Abstraction has 16898 states and 24972 transitions. [2022-11-03 02:10:55,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 02:10:55,812 INFO L276 IsEmpty]: Start isEmpty. Operand 16898 states and 24972 transitions. [2022-11-03 02:10:55,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-03 02:10:55,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:55,833 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:55,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:10:55,834 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:55,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:55,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2026481688, now seen corresponding path program 1 times [2022-11-03 02:10:55,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:55,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146754593] [2022-11-03 02:10:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:55,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2022-11-03 02:10:56,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146754593] [2022-11-03 02:10:56,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146754593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:56,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:56,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:10:56,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856391555] [2022-11-03 02:10:56,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:56,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:10:56,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:56,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:10:56,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:10:56,384 INFO L87 Difference]: Start difference. First operand 16898 states and 24972 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 02:11:00,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:00,055 INFO L93 Difference]: Finished difference Result 35703 states and 52716 transitions. [2022-11-03 02:11:00,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:11:00,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 342 [2022-11-03 02:11:00,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:00,142 INFO L225 Difference]: With dead ends: 35703 [2022-11-03 02:11:00,142 INFO L226 Difference]: Without dead ends: 18814 [2022-11-03 02:11:00,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:00,220 INFO L413 NwaCegarLoop]: 2988 mSDtfsCounter, 1222 mSDsluCounter, 8551 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 10793 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:00,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 10793 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 02:11:00,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18814 states. [2022-11-03 02:11:01,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18814 to 18800. [2022-11-03 02:11:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18800 states, 10393 states have (on average 1.2903877609929761) internal successors, (13411), 11037 states have internal predecessors, (13411), 7137 states have call successors, (7137), 1271 states have call predecessors, (7137), 1269 states have return successors, (7160), 6904 states have call predecessors, (7160), 7137 states have call successors, (7160) [2022-11-03 02:11:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18800 states to 18800 states and 27708 transitions. [2022-11-03 02:11:01,447 INFO L78 Accepts]: Start accepts. Automaton has 18800 states and 27708 transitions. Word has length 342 [2022-11-03 02:11:01,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:01,448 INFO L495 AbstractCegarLoop]: Abstraction has 18800 states and 27708 transitions. [2022-11-03 02:11:01,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 02:11:01,449 INFO L276 IsEmpty]: Start isEmpty. Operand 18800 states and 27708 transitions. [2022-11-03 02:11:01,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-03 02:11:01,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:01,462 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:01,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:11:01,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:01,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:01,463 INFO L85 PathProgramCache]: Analyzing trace with hash -30569180, now seen corresponding path program 1 times [2022-11-03 02:11:01,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:01,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908896056] [2022-11-03 02:11:01,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:01,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2022-11-03 02:11:02,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:02,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908896056] [2022-11-03 02:11:02,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908896056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:02,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:02,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:11:02,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717485937] [2022-11-03 02:11:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:02,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:11:02,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:11:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:02,145 INFO L87 Difference]: Start difference. First operand 18800 states and 27708 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 02:11:05,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:05,677 INFO L93 Difference]: Finished difference Result 39479 states and 58172 transitions. [2022-11-03 02:11:05,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:11:05,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 343 [2022-11-03 02:11:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:05,786 INFO L225 Difference]: With dead ends: 39479 [2022-11-03 02:11:05,787 INFO L226 Difference]: Without dead ends: 20688 [2022-11-03 02:11:05,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:05,860 INFO L413 NwaCegarLoop]: 2987 mSDtfsCounter, 1211 mSDsluCounter, 8554 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 10796 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:05,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 10796 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 02:11:05,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20688 states. [2022-11-03 02:11:07,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20688 to 20674. [2022-11-03 02:11:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20674 states, 11463 states have (on average 1.2901509203524384) internal successors, (14789), 12168 states have internal predecessors, (14789), 7804 states have call successors, (7804), 1408 states have call predecessors, (7804), 1406 states have return successors, (7827), 7551 states have call predecessors, (7827), 7804 states have call successors, (7827) [2022-11-03 02:11:07,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20674 states to 20674 states and 30420 transitions. [2022-11-03 02:11:07,291 INFO L78 Accepts]: Start accepts. Automaton has 20674 states and 30420 transitions. Word has length 343 [2022-11-03 02:11:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:07,293 INFO L495 AbstractCegarLoop]: Abstraction has 20674 states and 30420 transitions. [2022-11-03 02:11:07,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 02:11:07,293 INFO L276 IsEmpty]: Start isEmpty. Operand 20674 states and 30420 transitions. [2022-11-03 02:11:07,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-11-03 02:11:07,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:07,319 INFO L195 NwaCegarLoop]: trace histogram [17, 14, 14, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:07,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:11:07,320 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash 195689964, now seen corresponding path program 1 times [2022-11-03 02:11:07,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:07,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954396283] [2022-11-03 02:11:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:07,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2022-11-03 02:11:07,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:07,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954396283] [2022-11-03 02:11:07,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954396283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:07,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:07,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:07,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930660007] [2022-11-03 02:11:07,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:07,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:07,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:07,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:07,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:07,847 INFO L87 Difference]: Start difference. First operand 20674 states and 30420 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 02:11:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:10,053 INFO L93 Difference]: Finished difference Result 43861 states and 64554 transitions. [2022-11-03 02:11:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:10,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 355 [2022-11-03 02:11:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:10,147 INFO L225 Difference]: With dead ends: 43861 [2022-11-03 02:11:10,148 INFO L226 Difference]: Without dead ends: 23196 [2022-11-03 02:11:10,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:10,217 INFO L413 NwaCegarLoop]: 3038 mSDtfsCounter, 1316 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 4870 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:10,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 4870 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 02:11:10,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2022-11-03 02:11:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 23190. [2022-11-03 02:11:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23190 states, 12861 states have (on average 1.2914236840059092) internal successors, (16609), 13659 states have internal predecessors, (16609), 8751 states have call successors, (8751), 1581 states have call predecessors, (8751), 1577 states have return successors, (8774), 8468 states have call predecessors, (8774), 8751 states have call successors, (8774) [2022-11-03 02:11:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23190 states to 23190 states and 34134 transitions. [2022-11-03 02:11:11,761 INFO L78 Accepts]: Start accepts. Automaton has 23190 states and 34134 transitions. Word has length 355 [2022-11-03 02:11:11,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:11,762 INFO L495 AbstractCegarLoop]: Abstraction has 23190 states and 34134 transitions. [2022-11-03 02:11:11,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 02:11:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 23190 states and 34134 transitions. [2022-11-03 02:11:11,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-11-03 02:11:11,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:11,785 INFO L195 NwaCegarLoop]: trace histogram [17, 14, 14, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:11,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:11:11,785 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:11,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:11,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1257304184, now seen corresponding path program 1 times [2022-11-03 02:11:11,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:11,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019896003] [2022-11-03 02:11:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:11,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2022-11-03 02:11:12,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:12,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019896003] [2022-11-03 02:11:12,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019896003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:12,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:12,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:12,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691214278] [2022-11-03 02:11:12,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:12,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:12,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:12,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:12,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:12,165 INFO L87 Difference]: Start difference. First operand 23190 states and 34134 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 02:11:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:14,522 INFO L93 Difference]: Finished difference Result 48279 states and 71044 transitions. [2022-11-03 02:11:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:14,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 362 [2022-11-03 02:11:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:14,654 INFO L225 Difference]: With dead ends: 48279 [2022-11-03 02:11:14,654 INFO L226 Difference]: Without dead ends: 25098 [2022-11-03 02:11:14,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:14,876 INFO L413 NwaCegarLoop]: 2806 mSDtfsCounter, 1223 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 4641 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:14,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 4641 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 02:11:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25098 states. [2022-11-03 02:11:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25098 to 25092. [2022-11-03 02:11:16,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25092 states, 13951 states have (on average 1.2913052827754283) internal successors, (18015), 14810 states have internal predecessors, (18015), 9422 states have call successors, (9422), 1722 states have call predecessors, (9422), 1718 states have return successors, (9445), 9119 states have call predecessors, (9445), 9422 states have call successors, (9445) [2022-11-03 02:11:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25092 states to 25092 states and 36882 transitions. [2022-11-03 02:11:16,207 INFO L78 Accepts]: Start accepts. Automaton has 25092 states and 36882 transitions. Word has length 362 [2022-11-03 02:11:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:16,208 INFO L495 AbstractCegarLoop]: Abstraction has 25092 states and 36882 transitions. [2022-11-03 02:11:16,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 02:11:16,209 INFO L276 IsEmpty]: Start isEmpty. Operand 25092 states and 36882 transitions. [2022-11-03 02:11:16,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-11-03 02:11:16,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:16,226 INFO L195 NwaCegarLoop]: trace histogram [17, 15, 15, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:11:16,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:11:16,226 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:16,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1683091473, now seen corresponding path program 1 times [2022-11-03 02:11:16,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:16,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283235150] [2022-11-03 02:11:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:16,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2022-11-03 02:11:16,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:16,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283235150] [2022-11-03 02:11:16,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283235150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:16,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:16,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:16,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567203780] [2022-11-03 02:11:16,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:16,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:16,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:16,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:16,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:16,557 INFO L87 Difference]: Start difference. First operand 25092 states and 36882 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-03 02:11:19,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:19,035 INFO L93 Difference]: Finished difference Result 52043 states and 76484 transitions. [2022-11-03 02:11:19,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:19,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 373 [2022-11-03 02:11:19,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:19,155 INFO L225 Difference]: With dead ends: 52043 [2022-11-03 02:11:19,155 INFO L226 Difference]: Without dead ends: 26960 [2022-11-03 02:11:19,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:19,249 INFO L413 NwaCegarLoop]: 2986 mSDtfsCounter, 1220 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 4817 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:19,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 4817 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 02:11:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26960 states. [2022-11-03 02:11:20,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26960 to 26954. [2022-11-03 02:11:20,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26954 states, 15009 states have (on average 1.2912918915317477) internal successors, (19381), 15929 states have internal predecessors, (19381), 10089 states have call successors, (10089), 1859 states have call predecessors, (10089), 1855 states have return successors, (10112), 9766 states have call predecessors, (10112), 10089 states have call successors, (10112) [2022-11-03 02:11:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26954 states to 26954 states and 39582 transitions. [2022-11-03 02:11:20,749 INFO L78 Accepts]: Start accepts. Automaton has 26954 states and 39582 transitions. Word has length 373 [2022-11-03 02:11:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:20,750 INFO L495 AbstractCegarLoop]: Abstraction has 26954 states and 39582 transitions. [2022-11-03 02:11:20,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-03 02:11:20,750 INFO L276 IsEmpty]: Start isEmpty. Operand 26954 states and 39582 transitions. [2022-11-03 02:11:20,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-11-03 02:11:20,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:20,773 INFO L195 NwaCegarLoop]: trace histogram [19, 14, 14, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:20,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:11:20,774 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:20,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:20,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1323639573, now seen corresponding path program 1 times [2022-11-03 02:11:20,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:20,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043145732] [2022-11-03 02:11:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2022-11-03 02:11:21,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:21,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043145732] [2022-11-03 02:11:21,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043145732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:21,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:21,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:11:21,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068441920] [2022-11-03 02:11:21,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:21,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:11:21,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:21,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:11:21,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:21,255 INFO L87 Difference]: Start difference. First operand 26954 states and 39582 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-03 02:11:24,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:24,900 INFO L93 Difference]: Finished difference Result 56559 states and 83041 transitions. [2022-11-03 02:11:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:11:24,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) Word has length 390 [2022-11-03 02:11:24,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:25,040 INFO L225 Difference]: With dead ends: 56559 [2022-11-03 02:11:25,040 INFO L226 Difference]: Without dead ends: 29614 [2022-11-03 02:11:25,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:25,147 INFO L413 NwaCegarLoop]: 2850 mSDtfsCounter, 1323 mSDsluCounter, 8260 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 10371 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:25,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 10371 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:11:25,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29614 states. [2022-11-03 02:11:26,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29614 to 27754. [2022-11-03 02:11:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27754 states, 15434 states have (on average 1.2915640793054295) internal successors, (19934), 16382 states have internal predecessors, (19934), 10401 states have call successors, (10401), 1918 states have call predecessors, (10401), 1918 states have return successors, (10428), 10074 states have call predecessors, (10428), 10401 states have call successors, (10428) [2022-11-03 02:11:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27754 states to 27754 states and 40763 transitions. [2022-11-03 02:11:26,619 INFO L78 Accepts]: Start accepts. Automaton has 27754 states and 40763 transitions. Word has length 390 [2022-11-03 02:11:26,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:26,620 INFO L495 AbstractCegarLoop]: Abstraction has 27754 states and 40763 transitions. [2022-11-03 02:11:26,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-03 02:11:26,620 INFO L276 IsEmpty]: Start isEmpty. Operand 27754 states and 40763 transitions. [2022-11-03 02:11:26,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-03 02:11:26,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:26,639 INFO L195 NwaCegarLoop]: trace histogram [19, 14, 14, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:26,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:11:26,640 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:26,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:26,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1198230352, now seen corresponding path program 1 times [2022-11-03 02:11:26,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:26,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397643878] [2022-11-03 02:11:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:26,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-03 02:11:27,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:27,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397643878] [2022-11-03 02:11:27,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397643878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:27,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:27,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:11:27,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328166183] [2022-11-03 02:11:27,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:27,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:11:27,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:27,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:11:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:27,198 INFO L87 Difference]: Start difference. First operand 27754 states and 40763 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-03 02:11:30,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:30,864 INFO L93 Difference]: Finished difference Result 57419 states and 84298 transitions. [2022-11-03 02:11:30,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:11:30,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) Word has length 391 [2022-11-03 02:11:30,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:31,011 INFO L225 Difference]: With dead ends: 57419 [2022-11-03 02:11:31,011 INFO L226 Difference]: Without dead ends: 29674 [2022-11-03 02:11:31,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:31,112 INFO L413 NwaCegarLoop]: 2988 mSDtfsCounter, 1221 mSDsluCounter, 8551 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 10793 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:31,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 10793 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 02:11:31,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29674 states. [2022-11-03 02:11:32,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29674 to 27794. [2022-11-03 02:11:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27794 states, 15458 states have (on average 1.2911113986285419) internal successors, (19958), 16406 states have internal predecessors, (19958), 10405 states have call successors, (10405), 1926 states have call predecessors, (10405), 1930 states have return successors, (10436), 10082 states have call predecessors, (10436), 10405 states have call successors, (10436) [2022-11-03 02:11:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27794 states to 27794 states and 40799 transitions. [2022-11-03 02:11:32,676 INFO L78 Accepts]: Start accepts. Automaton has 27794 states and 40799 transitions. Word has length 391 [2022-11-03 02:11:32,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:32,678 INFO L495 AbstractCegarLoop]: Abstraction has 27794 states and 40799 transitions. [2022-11-03 02:11:32,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-03 02:11:32,679 INFO L276 IsEmpty]: Start isEmpty. Operand 27794 states and 40799 transitions. [2022-11-03 02:11:32,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-03 02:11:32,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:32,693 INFO L195 NwaCegarLoop]: trace histogram [19, 14, 14, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:32,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:11:32,694 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:32,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1668088580, now seen corresponding path program 1 times [2022-11-03 02:11:32,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:32,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291741682] [2022-11-03 02:11:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:32,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 120 proven. 24 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2022-11-03 02:11:33,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:33,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291741682] [2022-11-03 02:11:33,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291741682] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:11:33,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108754768] [2022-11-03 02:11:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:33,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:11:33,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:11:33,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:11:33,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:11:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:34,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 3336 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:11:34,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:11:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-11-03 02:11:34,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:11:34,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108754768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:34,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:11:34,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-03 02:11:34,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102759488] [2022-11-03 02:11:34,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:34,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:11:34,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:34,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:11:34,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:11:34,614 INFO L87 Difference]: Start difference. First operand 27794 states and 40799 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-03 02:11:38,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:38,087 INFO L93 Difference]: Finished difference Result 57487 states and 84390 transitions. [2022-11-03 02:11:38,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:11:38,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) Word has length 392 [2022-11-03 02:11:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:38,272 INFO L225 Difference]: With dead ends: 57487 [2022-11-03 02:11:38,272 INFO L226 Difference]: Without dead ends: 29702 [2022-11-03 02:11:38,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:11:38,383 INFO L413 NwaCegarLoop]: 3095 mSDtfsCounter, 1867 mSDsluCounter, 8412 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 10838 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:38,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 10838 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 02:11:38,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29702 states. [2022-11-03 02:11:39,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29702 to 29688. [2022-11-03 02:11:39,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29688 states, 16548 states have (on average 1.2919990331157845) internal successors, (21380), 17557 states have internal predecessors, (21380), 11072 states have call successors, (11072), 2063 states have call predecessors, (11072), 2067 states have return successors, (11103), 10729 states have call predecessors, (11103), 11072 states have call successors, (11103) [2022-11-03 02:11:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29688 states to 29688 states and 43555 transitions. [2022-11-03 02:11:39,999 INFO L78 Accepts]: Start accepts. Automaton has 29688 states and 43555 transitions. Word has length 392 [2022-11-03 02:11:40,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:40,000 INFO L495 AbstractCegarLoop]: Abstraction has 29688 states and 43555 transitions. [2022-11-03 02:11:40,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-03 02:11:40,000 INFO L276 IsEmpty]: Start isEmpty. Operand 29688 states and 43555 transitions. [2022-11-03 02:11:40,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-03 02:11:40,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:40,009 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:40,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:11:40,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b8f00c-bcc0-4b71-80a8-f2651a11fe4a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 02:11:40,212 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:40,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:40,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1305448072, now seen corresponding path program 1 times [2022-11-03 02:11:40,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:40,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765537065] [2022-11-03 02:11:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:40,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-11-03 02:11:40,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:40,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765537065] [2022-11-03 02:11:40,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765537065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:40,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:40,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:40,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684099267] [2022-11-03 02:11:40,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:40,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:40,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:40,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:40,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:40,547 INFO L87 Difference]: Start difference. First operand 29688 states and 43555 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-03 02:11:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:42,916 INFO L93 Difference]: Finished difference Result 62998 states and 92575 transitions. [2022-11-03 02:11:42,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:42,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 403 [2022-11-03 02:11:42,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:43,235 INFO L225 Difference]: With dead ends: 62998 [2022-11-03 02:11:43,235 INFO L226 Difference]: Without dead ends: 33319 [2022-11-03 02:11:43,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:43,352 INFO L413 NwaCegarLoop]: 2858 mSDtfsCounter, 1558 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 4691 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:43,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 4691 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:11:43,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33319 states. [2022-11-03 02:11:44,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33319 to 33313. [2022-11-03 02:11:44,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33313 states, 18453 states have (on average 1.29155150923969) internal successors, (23833), 19602 states have internal predecessors, (23833), 12569 states have call successors, (12569), 2288 states have call predecessors, (12569), 2290 states have return successors, (12602), 12168 states have call predecessors, (12602), 12569 states have call successors, (12602) [2022-11-03 02:11:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33313 states to 33313 states and 49004 transitions. [2022-11-03 02:11:45,056 INFO L78 Accepts]: Start accepts. Automaton has 33313 states and 49004 transitions. Word has length 403 [2022-11-03 02:11:45,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:45,056 INFO L495 AbstractCegarLoop]: Abstraction has 33313 states and 49004 transitions. [2022-11-03 02:11:45,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-03 02:11:45,057 INFO L276 IsEmpty]: Start isEmpty. Operand 33313 states and 49004 transitions. [2022-11-03 02:11:45,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-03 02:11:45,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:45,067 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:45,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:11:45,068 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:45,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:45,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1511904691, now seen corresponding path program 1 times [2022-11-03 02:11:45,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:45,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401736992] [2022-11-03 02:11:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:45,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2022-11-03 02:11:46,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:46,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401736992] [2022-11-03 02:11:46,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401736992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:46,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:46,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:11:46,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529660980] [2022-11-03 02:11:46,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:46,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:11:46,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:11:46,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:46,295 INFO L87 Difference]: Start difference. First operand 33313 states and 49004 transitions. Second operand has 5 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-03 02:11:49,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:49,440 INFO L93 Difference]: Finished difference Result 66363 states and 98238 transitions. [2022-11-03 02:11:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:11:49,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 404 [2022-11-03 02:11:49,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:49,446 INFO L225 Difference]: With dead ends: 66363 [2022-11-03 02:11:49,446 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:11:49,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:11:49,627 INFO L413 NwaCegarLoop]: 1859 mSDtfsCounter, 6 mSDsluCounter, 6130 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7429 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:49,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 7429 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 02:11:49,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:11:49,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:11:49,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:11:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:11:49,640 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 404 [2022-11-03 02:11:49,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:49,640 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:11:49,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-03 02:11:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:11:49,641 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:11:49,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:11:49,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 02:11:49,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.