./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:51:18,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:51:18,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:51:18,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:51:18,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:51:18,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:51:18,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:51:18,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:51:18,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:51:18,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:51:18,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:51:18,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:51:18,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:51:18,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:51:18,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:51:18,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:51:18,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:51:18,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:51:18,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:51:18,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:51:18,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:51:18,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:51:18,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:51:18,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:51:18,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:51:18,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:51:18,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:51:18,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:51:18,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:51:18,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:51:18,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:51:18,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:51:18,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:51:18,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:51:18,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:51:18,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:51:18,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:51:18,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:51:18,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:51:18,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:51:18,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:51:18,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:51:18,798 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:51:18,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:51:18,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:51:18,799 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:51:18,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:51:18,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:51:18,800 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:51:18,800 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:51:18,800 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:51:18,800 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:51:18,801 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:51:18,801 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:51:18,801 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:51:18,801 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:51:18,801 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:51:18,802 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:51:18,802 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:51:18,802 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:51:18,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:51:18,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:51:18,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:51:18,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:51:18,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:51:18,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:51:18,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:51:18,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:51:18,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:51:18,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:51:18,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:51:18,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:51:18,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:51:18,805 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:51:18,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:51:18,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:51:18,805 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:51:18,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:51:18,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:51:18,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:51:18,810 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_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 [2022-11-19 07:51:19,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:51:19,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:51:19,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:51:19,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:51:19,164 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:51:19,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2022-11-19 07:51:19,244 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/data/d8f90dd90/d616c9aa7f6d4476b5f3fe0fa75d625b/FLAG9fd36a333 [2022-11-19 07:51:20,059 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:51:20,060 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2022-11-19 07:51:20,110 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/data/d8f90dd90/d616c9aa7f6d4476b5f3fe0fa75d625b/FLAG9fd36a333 [2022-11-19 07:51:20,571 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/data/d8f90dd90/d616c9aa7f6d4476b5f3fe0fa75d625b [2022-11-19 07:51:20,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:51:20,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:51:20,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:51:20,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:51:20,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:51:20,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:20" (1/1) ... [2022-11-19 07:51:20,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4abdf824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20, skipping insertion in model container [2022-11-19 07:51:20,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:20" (1/1) ... [2022-11-19 07:51:20,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:51:20,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:51:23,325 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2022-11-19 07:51:23,329 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2022-11-19 07:51:23,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:51:23,381 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:51:23,794 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2022-11-19 07:51:23,795 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2022-11-19 07:51:23,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:51:23,939 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:51:23,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23 WrapperNode [2022-11-19 07:51:23,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:51:23,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:51:23,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:51:23,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:51:23,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23" (1/1) ... [2022-11-19 07:51:24,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23" (1/1) ... [2022-11-19 07:51:24,244 INFO L138 Inliner]: procedures = 363, calls = 2961, calls flagged for inlining = 178, calls inlined = 134, statements flattened = 4919 [2022-11-19 07:51:24,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:51:24,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:51:24,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:51:24,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:51:24,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23" (1/1) ... [2022-11-19 07:51:24,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23" (1/1) ... [2022-11-19 07:51:24,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23" (1/1) ... [2022-11-19 07:51:24,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23" (1/1) ... [2022-11-19 07:51:24,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23" (1/1) ... [2022-11-19 07:51:24,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23" (1/1) ... [2022-11-19 07:51:24,554 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23" (1/1) ... [2022-11-19 07:51:24,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23" (1/1) ... [2022-11-19 07:51:24,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:51:24,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:51:24,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:51:24,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:51:24,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23" (1/1) ... [2022-11-19 07:51:24,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:51:24,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:51:24,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:51:24,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb1cb30d-aec5-40d9-98b2-2df9b38c457f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:51:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-19 07:51:24,700 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-19 07:51:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-19 07:51:24,700 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-19 07:51:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-19 07:51:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:51:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:51:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:51:24,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:51:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:51:24,702 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:51:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2022-11-19 07:51:24,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2022-11-19 07:51:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-19 07:51:24,702 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-19 07:51:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-11-19 07:51:24,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-11-19 07:51:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:51:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:51:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2022-11-19 07:51:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2022-11-19 07:51:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-11-19 07:51:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-11-19 07:51:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:51:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:51:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2022-11-19 07:51:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2022-11-19 07:51:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2022-11-19 07:51:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2022-11-19 07:51:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_5_4 [2022-11-19 07:51:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_5_4 [2022-11-19 07:51:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-19 07:51:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-19 07:51:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:51:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-11-19 07:51:24,706 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-11-19 07:51:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:51:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 07:51:24,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 07:51:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:51:24,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:51:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2022-11-19 07:51:24,707 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2022-11-19 07:51:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:51:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:51:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2022-11-19 07:51:24,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2022-11-19 07:51:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2022-11-19 07:51:24,710 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2022-11-19 07:51:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 07:51:24,711 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 07:51:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 07:51:24,711 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 07:51:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-19 07:51:24,711 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-19 07:51:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 07:51:24,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 07:51:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2022-11-19 07:51:24,712 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2022-11-19 07:51:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-11-19 07:51:24,712 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-11-19 07:51:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:51:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 07:51:24,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 07:51:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-19 07:51:24,713 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-19 07:51:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-11-19 07:51:24,713 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-11-19 07:51:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:51:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 07:51:24,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 07:51:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2022-11-19 07:51:24,714 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2022-11-19 07:51:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-11-19 07:51:24,715 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-11-19 07:51:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:51:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-19 07:51:24,716 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-19 07:51:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-19 07:51:24,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-19 07:51:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:51:24,717 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:51:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 07:51:24,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 07:51:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 07:51:24,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 07:51:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 07:51:24,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 07:51:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 07:51:24,719 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 07:51:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 07:51:24,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 07:51:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-19 07:51:24,720 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-19 07:51:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:51:24,721 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:51:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:51:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2022-11-19 07:51:24,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2022-11-19 07:51:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-11-19 07:51:24,721 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-11-19 07:51:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2022-11-19 07:51:24,722 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2022-11-19 07:51:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:51:24,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:51:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:51:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 07:51:24,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 07:51:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2022-11-19 07:51:24,726 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2022-11-19 07:51:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-19 07:51:24,727 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-19 07:51:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:51:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:51:24,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:51:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:51:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-11-19 07:51:24,730 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-11-19 07:51:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 07:51:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2022-11-19 07:51:24,735 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2022-11-19 07:51:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-11-19 07:51:24,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-11-19 07:51:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:51:24,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:51:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-19 07:51:24,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-19 07:51:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-19 07:51:24,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-19 07:51:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2022-11-19 07:51:24,737 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2022-11-19 07:51:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-19 07:51:24,737 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-19 07:51:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 07:51:24,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 07:51:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-11-19 07:51:24,737 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-11-19 07:51:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2022-11-19 07:51:24,738 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2022-11-19 07:51:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2022-11-19 07:51:24,738 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2022-11-19 07:51:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:51:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-19 07:51:24,738 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-19 07:51:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 07:51:24,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 07:51:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:51:24,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:51:25,575 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:51:25,580 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:51:25,871 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:51:44,266 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 07:51:44,335 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:51:45,188 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:51:45,188 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 07:51:45,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:45 BoogieIcfgContainer [2022-11-19 07:51:45,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:51:45,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:51:45,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:51:45,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:51:45,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:51:20" (1/3) ... [2022-11-19 07:51:45,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f95d935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:45, skipping insertion in model container [2022-11-19 07:51:45,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23" (2/3) ... [2022-11-19 07:51:45,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f95d935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:45, skipping insertion in model container [2022-11-19 07:51:45,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:45" (3/3) ... [2022-11-19 07:51:45,208 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2022-11-19 07:51:45,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:51:45,239 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:51:45,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:51:45,334 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;@1ccf31a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:51:45,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:51:45,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 1047 states, 628 states have (on average 1.3184713375796178) internal successors, (828), 637 states have internal predecessors, (828), 355 states have call successors, (355), 65 states have call predecessors, (355), 64 states have return successors, (349), 348 states have call predecessors, (349), 349 states have call successors, (349) [2022-11-19 07:51:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-19 07:51:45,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:45,378 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:51:45,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:45,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:45,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1153690915, now seen corresponding path program 1 times [2022-11-19 07:51:45,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:45,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299809602] [2022-11-19 07:51:45,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:45,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-19 07:51:46,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:46,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299809602] [2022-11-19 07:51:46,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299809602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:46,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:46,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:51:46,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165479829] [2022-11-19 07:51:46,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:46,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:51:46,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:46,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:51:46,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:46,585 INFO L87 Difference]: Start difference. First operand has 1047 states, 628 states have (on average 1.3184713375796178) internal successors, (828), 637 states have internal predecessors, (828), 355 states have call successors, (355), 65 states have call predecessors, (355), 64 states have return successors, (349), 348 states have call predecessors, (349), 349 states have call successors, (349) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-19 07:51:48,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:51:51,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:51:53,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:53,252 INFO L93 Difference]: Finished difference Result 2613 states and 3867 transitions. [2022-11-19 07:51:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:51:53,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 239 [2022-11-19 07:51:53,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:53,279 INFO L225 Difference]: With dead ends: 2613 [2022-11-19 07:51:53,279 INFO L226 Difference]: Without dead ends: 1547 [2022-11-19 07:51:53,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:53,293 INFO L413 NwaCegarLoop]: 1486 mSDtfsCounter, 812 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:53,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 2752 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-19 07:51:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-11-19 07:51:53,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1543. [2022-11-19 07:51:53,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 954 states have (on average 1.3092243186582808) internal successors, (1249), 966 states have internal predecessors, (1249), 492 states have call successors, (492), 96 states have call predecessors, (492), 96 states have return successors, (492), 489 states have call predecessors, (492), 492 states have call successors, (492) [2022-11-19 07:51:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2233 transitions. [2022-11-19 07:51:53,509 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2233 transitions. Word has length 239 [2022-11-19 07:51:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:53,514 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2233 transitions. [2022-11-19 07:51:53,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-19 07:51:53,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2233 transitions. [2022-11-19 07:51:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-19 07:51:53,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:53,537 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 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] [2022-11-19 07:51:53,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:51:53,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:53,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:53,539 INFO L85 PathProgramCache]: Analyzing trace with hash -21940315, now seen corresponding path program 1 times [2022-11-19 07:51:53,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:53,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437841298] [2022-11-19 07:51:53,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:53,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-19 07:51:54,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:54,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437841298] [2022-11-19 07:51:54,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437841298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:54,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:54,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:51:54,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597737859] [2022-11-19 07:51:54,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:54,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:51:54,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:54,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:51:54,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:54,155 INFO L87 Difference]: Start difference. First operand 1543 states and 2233 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-19 07:51:58,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:51:59,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:59,517 INFO L93 Difference]: Finished difference Result 4449 states and 6431 transitions. [2022-11-19 07:51:59,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:51:59,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 252 [2022-11-19 07:51:59,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:59,536 INFO L225 Difference]: With dead ends: 4449 [2022-11-19 07:51:59,537 INFO L226 Difference]: Without dead ends: 2945 [2022-11-19 07:51:59,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:59,544 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 1308 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:59,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 2770 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-19 07:51:59,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2022-11-19 07:51:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2939. [2022-11-19 07:51:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 1819 states have (on average 1.3100604727872458) internal successors, (2383), 1847 states have internal predecessors, (2383), 929 states have call successors, (929), 190 states have call predecessors, (929), 190 states have return successors, (929), 919 states have call predecessors, (929), 929 states have call successors, (929) [2022-11-19 07:51:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 4241 transitions. [2022-11-19 07:51:59,700 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 4241 transitions. Word has length 252 [2022-11-19 07:51:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:59,702 INFO L495 AbstractCegarLoop]: Abstraction has 2939 states and 4241 transitions. [2022-11-19 07:51:59,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-19 07:51:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 4241 transitions. [2022-11-19 07:51:59,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-19 07:51:59,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:59,713 INFO L195 NwaCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 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] [2022-11-19 07:51:59,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:51:59,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:59,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:59,723 INFO L85 PathProgramCache]: Analyzing trace with hash -212082102, now seen corresponding path program 1 times [2022-11-19 07:51:59,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:59,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393679967] [2022-11-19 07:51:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:59,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2022-11-19 07:52:00,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:00,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393679967] [2022-11-19 07:52:00,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393679967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:00,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:00,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:00,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650622172] [2022-11-19 07:52:00,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:00,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:00,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:00,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:00,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:00,321 INFO L87 Difference]: Start difference. First operand 2939 states and 4241 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-19 07:52:02,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:06,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:07,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:08,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:08,115 INFO L93 Difference]: Finished difference Result 6862 states and 9882 transitions. [2022-11-19 07:52:08,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:08,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 259 [2022-11-19 07:52:08,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:08,144 INFO L225 Difference]: With dead ends: 6862 [2022-11-19 07:52:08,144 INFO L226 Difference]: Without dead ends: 3962 [2022-11-19 07:52:08,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:08,160 INFO L413 NwaCegarLoop]: 1415 mSDtfsCounter, 757 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:08,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 2655 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 437 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-19 07:52:08,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2022-11-19 07:52:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3958. [2022-11-19 07:52:08,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 2465 states have (on average 1.3087221095334685) internal successors, (3226), 2499 states have internal predecessors, (3226), 1233 states have call successors, (1233), 259 states have call predecessors, (1233), 259 states have return successors, (1233), 1219 states have call predecessors, (1233), 1233 states have call successors, (1233) [2022-11-19 07:52:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 5692 transitions. [2022-11-19 07:52:08,431 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 5692 transitions. Word has length 259 [2022-11-19 07:52:08,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:08,432 INFO L495 AbstractCegarLoop]: Abstraction has 3958 states and 5692 transitions. [2022-11-19 07:52:08,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-19 07:52:08,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 5692 transitions. [2022-11-19 07:52:08,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-19 07:52:08,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:08,440 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 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] [2022-11-19 07:52:08,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:52:08,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:08,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:08,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1773121899, now seen corresponding path program 1 times [2022-11-19 07:52:08,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:08,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086883221] [2022-11-19 07:52:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:08,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-19 07:52:08,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:08,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086883221] [2022-11-19 07:52:08,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086883221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:08,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:08,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:08,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83229526] [2022-11-19 07:52:08,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:08,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:08,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:08,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:08,977 INFO L87 Difference]: Start difference. First operand 3958 states and 5692 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-19 07:52:11,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:15,695 INFO L93 Difference]: Finished difference Result 11502 states and 16492 transitions. [2022-11-19 07:52:15,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:15,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 259 [2022-11-19 07:52:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:15,740 INFO L225 Difference]: With dead ends: 11502 [2022-11-19 07:52:15,740 INFO L226 Difference]: Without dead ends: 7583 [2022-11-19 07:52:15,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:15,760 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1305 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:15,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 2876 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 481 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-19 07:52:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2022-11-19 07:52:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 7575. [2022-11-19 07:52:16,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7575 states, 4705 states have (on average 1.3005313496280553) internal successors, (6119), 4779 states have internal predecessors, (6119), 2351 states have call successors, (2351), 518 states have call predecessors, (2351), 518 states have return successors, (2351), 2317 states have call predecessors, (2351), 2351 states have call successors, (2351) [2022-11-19 07:52:16,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7575 states to 7575 states and 10821 transitions. [2022-11-19 07:52:16,323 INFO L78 Accepts]: Start accepts. Automaton has 7575 states and 10821 transitions. Word has length 259 [2022-11-19 07:52:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:16,328 INFO L495 AbstractCegarLoop]: Abstraction has 7575 states and 10821 transitions. [2022-11-19 07:52:16,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-19 07:52:16,329 INFO L276 IsEmpty]: Start isEmpty. Operand 7575 states and 10821 transitions. [2022-11-19 07:52:16,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-19 07:52:16,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:16,340 INFO L195 NwaCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 3, 3, 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] [2022-11-19 07:52:16,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:52:16,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:16,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:16,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1760786787, now seen corresponding path program 1 times [2022-11-19 07:52:16,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:16,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863804410] [2022-11-19 07:52:16,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:16,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1455 trivial. 0 not checked. [2022-11-19 07:52:16,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:16,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863804410] [2022-11-19 07:52:16,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863804410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:16,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:16,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:16,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492948095] [2022-11-19 07:52:16,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:16,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:16,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:16,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:16,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:16,847 INFO L87 Difference]: Start difference. First operand 7575 states and 10821 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-19 07:52:19,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:20,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:23,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:23,488 INFO L93 Difference]: Finished difference Result 15621 states and 22224 transitions. [2022-11-19 07:52:23,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:23,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 268 [2022-11-19 07:52:23,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:23,623 INFO L225 Difference]: With dead ends: 15621 [2022-11-19 07:52:23,624 INFO L226 Difference]: Without dead ends: 8085 [2022-11-19 07:52:23,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:23,649 INFO L413 NwaCegarLoop]: 1370 mSDtfsCounter, 573 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:23,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 2579 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-19 07:52:23,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8085 states. [2022-11-19 07:52:24,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8085 to 8083. [2022-11-19 07:52:24,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8083 states, 5021 states have (on average 1.2949611631149174) internal successors, (6502), 5096 states have internal predecessors, (6502), 2476 states have call successors, (2476), 585 states have call predecessors, (2476), 585 states have return successors, (2476), 2442 states have call predecessors, (2476), 2476 states have call successors, (2476) [2022-11-19 07:52:24,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8083 states to 8083 states and 11454 transitions. [2022-11-19 07:52:24,066 INFO L78 Accepts]: Start accepts. Automaton has 8083 states and 11454 transitions. Word has length 268 [2022-11-19 07:52:24,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:24,066 INFO L495 AbstractCegarLoop]: Abstraction has 8083 states and 11454 transitions. [2022-11-19 07:52:24,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-19 07:52:24,067 INFO L276 IsEmpty]: Start isEmpty. Operand 8083 states and 11454 transitions. [2022-11-19 07:52:24,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-11-19 07:52:24,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:24,115 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 5, 5, 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] [2022-11-19 07:52:24,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:52:24,116 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash 964466021, now seen corresponding path program 1 times [2022-11-19 07:52:24,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:24,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114222737] [2022-11-19 07:52:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:24,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2022-11-19 07:52:24,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:24,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114222737] [2022-11-19 07:52:24,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114222737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:24,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:24,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:24,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059574387] [2022-11-19 07:52:24,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:24,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:24,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:24,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:24,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:24,470 INFO L87 Difference]: Start difference. First operand 8083 states and 11454 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-19 07:52:27,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:29,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:31,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:31,430 INFO L93 Difference]: Finished difference Result 22913 states and 32345 transitions. [2022-11-19 07:52:31,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:31,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 280 [2022-11-19 07:52:31,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:31,501 INFO L225 Difference]: With dead ends: 22913 [2022-11-19 07:52:31,501 INFO L226 Difference]: Without dead ends: 14869 [2022-11-19 07:52:31,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:31,532 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 1274 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:31,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 2745 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-19 07:52:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14869 states. [2022-11-19 07:52:32,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14869 to 14843. [2022-11-19 07:52:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14843 states, 9286 states have (on average 1.2893603273745424) internal successors, (11973), 9459 states have internal predecessors, (11973), 4417 states have call successors, (4417), 1139 states have call predecessors, (4417), 1139 states have return successors, (4417), 4325 states have call predecessors, (4417), 4417 states have call successors, (4417) [2022-11-19 07:52:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14843 states to 14843 states and 20807 transitions. [2022-11-19 07:52:32,402 INFO L78 Accepts]: Start accepts. Automaton has 14843 states and 20807 transitions. Word has length 280 [2022-11-19 07:52:32,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:32,403 INFO L495 AbstractCegarLoop]: Abstraction has 14843 states and 20807 transitions. [2022-11-19 07:52:32,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-19 07:52:32,404 INFO L276 IsEmpty]: Start isEmpty. Operand 14843 states and 20807 transitions. [2022-11-19 07:52:32,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-19 07:52:32,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:32,414 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 5, 5, 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] [2022-11-19 07:52:32,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:52:32,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:32,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:32,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1834499790, now seen corresponding path program 1 times [2022-11-19 07:52:32,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:32,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911886702] [2022-11-19 07:52:32,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:32,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2022-11-19 07:52:32,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:32,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911886702] [2022-11-19 07:52:32,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911886702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:32,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:32,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:32,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331195094] [2022-11-19 07:52:32,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:32,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:32,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:32,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:32,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:32,787 INFO L87 Difference]: Start difference. First operand 14843 states and 20807 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-19 07:52:36,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:38,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:39,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:41,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:41,294 INFO L93 Difference]: Finished difference Result 41049 states and 57378 transitions. [2022-11-19 07:52:41,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:41,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 289 [2022-11-19 07:52:41,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:41,414 INFO L225 Difference]: With dead ends: 41049 [2022-11-19 07:52:41,414 INFO L226 Difference]: Without dead ends: 26245 [2022-11-19 07:52:41,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:41,459 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1256 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:41,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 2860 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-19 07:52:41,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26245 states. [2022-11-19 07:52:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26245 to 26219. [2022-11-19 07:52:42,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26219 states, 16555 states have (on average 1.2806402899426155) internal successors, (21201), 16911 states have internal predecessors, (21201), 7589 states have call successors, (7589), 2074 states have call predecessors, (7589), 2074 states have return successors, (7589), 7381 states have call predecessors, (7589), 7589 states have call successors, (7589) [2022-11-19 07:52:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26219 states to 26219 states and 36379 transitions. [2022-11-19 07:52:43,045 INFO L78 Accepts]: Start accepts. Automaton has 26219 states and 36379 transitions. Word has length 289 [2022-11-19 07:52:43,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:43,047 INFO L495 AbstractCegarLoop]: Abstraction has 26219 states and 36379 transitions. [2022-11-19 07:52:43,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-19 07:52:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand 26219 states and 36379 transitions. [2022-11-19 07:52:43,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-11-19 07:52:43,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:43,076 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:43,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:52:43,076 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash -172480579, now seen corresponding path program 1 times [2022-11-19 07:52:43,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:43,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655767127] [2022-11-19 07:52:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:43,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1623 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1611 trivial. 0 not checked. [2022-11-19 07:52:43,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:43,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655767127] [2022-11-19 07:52:43,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655767127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:43,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:43,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:43,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48074932] [2022-11-19 07:52:43,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:43,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:43,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:43,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:43,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:43,534 INFO L87 Difference]: Start difference. First operand 26219 states and 36379 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, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-19 07:52:46,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:51,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:51,604 INFO L93 Difference]: Finished difference Result 59072 states and 81824 transitions. [2022-11-19 07:52:51,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:51,604 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, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 308 [2022-11-19 07:52:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:51,748 INFO L225 Difference]: With dead ends: 59072 [2022-11-19 07:52:51,748 INFO L226 Difference]: Without dead ends: 32986 [2022-11-19 07:52:51,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:51,811 INFO L413 NwaCegarLoop]: 1894 mSDtfsCounter, 1185 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:51,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 2757 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 541 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-19 07:52:51,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32986 states. [2022-11-19 07:52:53,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32986 to 32952. [2022-11-19 07:52:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32952 states, 20822 states have (on average 1.2770146959946211) internal successors, (26590), 21270 states have internal predecessors, (26590), 9414 states have call successors, (9414), 2715 states have call predecessors, (9414), 2715 states have return successors, (9414), 9126 states have call predecessors, (9414), 9414 states have call successors, (9414) [2022-11-19 07:52:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32952 states to 32952 states and 45418 transitions. [2022-11-19 07:52:53,829 INFO L78 Accepts]: Start accepts. Automaton has 32952 states and 45418 transitions. Word has length 308 [2022-11-19 07:52:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:53,829 INFO L495 AbstractCegarLoop]: Abstraction has 32952 states and 45418 transitions. [2022-11-19 07:52:53,830 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, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-19 07:52:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 32952 states and 45418 transitions. [2022-11-19 07:52:53,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-11-19 07:52:53,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:53,858 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 6, 6, 3, 3, 3, 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] [2022-11-19 07:52:53,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:52:53,858 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:53,859 INFO L85 PathProgramCache]: Analyzing trace with hash 350274846, now seen corresponding path program 1 times [2022-11-19 07:52:53,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:53,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328649627] [2022-11-19 07:52:53,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:53,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1631 trivial. 0 not checked. [2022-11-19 07:52:54,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:54,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328649627] [2022-11-19 07:52:54,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328649627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:54,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:54,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:54,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357407173] [2022-11-19 07:52:54,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:54,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:54,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:54,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:54,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:54,208 INFO L87 Difference]: Start difference. First operand 32952 states and 45418 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-19 07:52:57,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:59,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:53:02,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:02,831 INFO L93 Difference]: Finished difference Result 81182 states and 111918 transitions. [2022-11-19 07:53:02,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:53:02,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 312 [2022-11-19 07:53:02,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:03,049 INFO L225 Difference]: With dead ends: 81182 [2022-11-19 07:53:03,049 INFO L226 Difference]: Without dead ends: 48363 [2022-11-19 07:53:03,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:03,357 INFO L413 NwaCegarLoop]: 2120 mSDtfsCounter, 1308 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:03,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 3346 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-19 07:53:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48363 states. [2022-11-19 07:53:05,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48363 to 48329. [2022-11-19 07:53:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48329 states, 30509 states have (on average 1.2760496902553344) internal successors, (38931), 31197 states have internal predecessors, (38931), 13787 states have call successors, (13787), 4032 states have call predecessors, (13787), 4032 states have return successors, (13787), 13339 states have call predecessors, (13787), 13787 states have call successors, (13787) [2022-11-19 07:53:05,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48329 states to 48329 states and 66505 transitions. [2022-11-19 07:53:05,908 INFO L78 Accepts]: Start accepts. Automaton has 48329 states and 66505 transitions. Word has length 312 [2022-11-19 07:53:05,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:05,909 INFO L495 AbstractCegarLoop]: Abstraction has 48329 states and 66505 transitions. [2022-11-19 07:53:05,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-19 07:53:05,910 INFO L276 IsEmpty]: Start isEmpty. Operand 48329 states and 66505 transitions. [2022-11-19 07:53:05,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-19 07:53:05,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:05,956 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 6, 6, 3, 3, 3, 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] [2022-11-19 07:53:05,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:53:05,956 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash -272254510, now seen corresponding path program 1 times [2022-11-19 07:53:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:05,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523384837] [2022-11-19 07:53:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:05,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1631 trivial. 0 not checked. [2022-11-19 07:53:06,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:06,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523384837] [2022-11-19 07:53:06,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523384837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:06,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:06,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:53:06,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888672166] [2022-11-19 07:53:06,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:06,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:53:06,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:06,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:53:06,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:06,484 INFO L87 Difference]: Start difference. First operand 48329 states and 66505 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-19 07:53:09,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:53:14,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:14,170 INFO L93 Difference]: Finished difference Result 119097 states and 163809 transitions. [2022-11-19 07:53:14,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:53:14,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 319 [2022-11-19 07:53:14,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:14,405 INFO L225 Difference]: With dead ends: 119097 [2022-11-19 07:53:14,405 INFO L226 Difference]: Without dead ends: 70901 [2022-11-19 07:53:14,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:14,672 INFO L413 NwaCegarLoop]: 2250 mSDtfsCounter, 1305 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:14,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 3476 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-19 07:53:14,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70901 states. [2022-11-19 07:53:17,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70901 to 70867. [2022-11-19 07:53:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70867 states, 44647 states have (on average 1.2724035209532556) internal successors, (56809), 45695 states have internal predecessors, (56809), 20218 states have call successors, (20218), 6001 states have call predecessors, (20218), 6001 states have return successors, (20218), 19530 states have call predecessors, (20218), 20218 states have call successors, (20218) [2022-11-19 07:53:18,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70867 states to 70867 states and 97245 transitions. [2022-11-19 07:53:18,060 INFO L78 Accepts]: Start accepts. Automaton has 70867 states and 97245 transitions. Word has length 319 [2022-11-19 07:53:18,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:18,061 INFO L495 AbstractCegarLoop]: Abstraction has 70867 states and 97245 transitions. [2022-11-19 07:53:18,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-19 07:53:18,061 INFO L276 IsEmpty]: Start isEmpty. Operand 70867 states and 97245 transitions. [2022-11-19 07:53:18,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-19 07:53:18,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:18,132 INFO L195 NwaCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:18,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:53:18,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:18,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1369350783, now seen corresponding path program 1 times [2022-11-19 07:53:18,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:18,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422728689] [2022-11-19 07:53:18,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:18,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1736 trivial. 0 not checked. [2022-11-19 07:53:18,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:18,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422728689] [2022-11-19 07:53:18,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422728689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:18,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:18,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:53:18,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817626359] [2022-11-19 07:53:18,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:18,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:53:18,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:18,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:53:18,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:53:18,823 INFO L87 Difference]: Start difference. First operand 70867 states and 97245 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-19 07:53:23,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:53:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:33,596 INFO L93 Difference]: Finished difference Result 164957 states and 226185 transitions. [2022-11-19 07:53:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:53:33,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 329 [2022-11-19 07:53:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:33,911 INFO L225 Difference]: With dead ends: 164957 [2022-11-19 07:53:33,912 INFO L226 Difference]: Without dead ends: 94223 [2022-11-19 07:53:34,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:53:34,057 INFO L413 NwaCegarLoop]: 2350 mSDtfsCounter, 1337 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 4098 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:34,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 4098 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-11-19 07:53:34,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94223 states. [2022-11-19 07:53:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94223 to 94189. [2022-11-19 07:53:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94189 states, 59281 states have (on average 1.27040704441558) internal successors, (75311), 60689 states have internal predecessors, (75311), 26761 states have call successors, (26761), 8146 states have call predecessors, (26761), 8146 states have return successors, (26761), 25833 states have call predecessors, (26761), 26761 states have call successors, (26761) [2022-11-19 07:53:38,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94189 states to 94189 states and 128833 transitions. [2022-11-19 07:53:38,371 INFO L78 Accepts]: Start accepts. Automaton has 94189 states and 128833 transitions. Word has length 329 [2022-11-19 07:53:38,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:38,372 INFO L495 AbstractCegarLoop]: Abstraction has 94189 states and 128833 transitions. [2022-11-19 07:53:38,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-19 07:53:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 94189 states and 128833 transitions. [2022-11-19 07:53:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-11-19 07:53:38,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:38,414 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:38,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:53:38,414 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:38,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:38,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1880022835, now seen corresponding path program 1 times [2022-11-19 07:53:38,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:38,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994065370] [2022-11-19 07:53:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:38,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2022-11-19 07:53:38,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:38,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994065370] [2022-11-19 07:53:38,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994065370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:38,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:38,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:53:38,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459399475] [2022-11-19 07:53:38,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:38,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:53:38,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:38,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:53:38,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:38,773 INFO L87 Difference]: Start difference. First operand 94189 states and 128833 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, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-19 07:53:41,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:53:42,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:53:44,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:53:46,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []