./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW --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 3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b --- 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-4e7fbc6 [2022-11-23 14:04:39,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:04:39,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:04:39,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:04:39,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:04:39,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:04:39,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:04:39,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:04:39,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:04:39,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:04:39,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:04:39,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:04:39,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:04:39,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:04:39,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:04:39,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:04:39,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:04:39,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:04:39,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:04:39,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:04:39,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:04:39,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:04:39,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:04:39,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:04:39,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:04:39,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:04:39,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:04:39,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:04:39,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:04:39,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:04:39,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:04:39,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:04:39,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:04:39,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:04:39,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:04:39,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:04:39,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:04:39,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:04:39,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:04:39,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:04:39,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:04:39,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:04:39,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:04:39,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:04:39,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:04:39,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:04:39,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:04:39,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:04:39,835 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:04:39,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:04:39,835 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:04:39,835 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:04:39,836 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:04:39,837 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:04:39,837 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:04:39,837 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:04:39,837 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:04:39,837 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:04:39,837 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:04:39,838 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:04:39,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:04:39,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:04:39,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:04:39,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:04:39,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:04:39,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:04:39,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:04:39,840 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:04:39,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:04:39,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:04:39,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:04:39,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:04:39,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:04:39,842 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:04:39,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:04:39,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:04:39,842 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:04:39,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:04:39,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:04:39,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:04:39,843 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_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b [2022-11-23 14:04:40,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:04:40,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:04:40,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:04:40,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:04:40,144 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:04:40,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2022-11-23 14:04:43,147 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:04:43,654 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:04:43,654 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2022-11-23 14:04:43,682 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/data/8569807ba/77983f9c53e547ffad9de0097f8c0d7e/FLAG4a6d35f24 [2022-11-23 14:04:43,696 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/data/8569807ba/77983f9c53e547ffad9de0097f8c0d7e [2022-11-23 14:04:43,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:04:43,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:04:43,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:04:43,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:04:43,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:04:43,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:04:43" (1/1) ... [2022-11-23 14:04:43,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f0521d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:43, skipping insertion in model container [2022-11-23 14:04:43,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:04:43" (1/1) ... [2022-11-23 14:04:43,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:04:43,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:04:44,699 WARN L237 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_835784f1-9a4c-421c-ad68-03744e11209a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2022-11-23 14:04:44,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:04:44,958 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:04:45,240 WARN L237 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_835784f1-9a4c-421c-ad68-03744e11209a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2022-11-23 14:04:45,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:04:45,332 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:04:45,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:45 WrapperNode [2022-11-23 14:04:45,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:04:45,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:04:45,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:04:45,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:04:45,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:45" (1/1) ... [2022-11-23 14:04:45,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:45" (1/1) ... [2022-11-23 14:04:45,475 INFO L138 Inliner]: procedures = 117, calls = 568, calls flagged for inlining = 30, calls inlined = 25, statements flattened = 1081 [2022-11-23 14:04:45,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:04:45,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:04:45,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:04:45,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:04:45,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:45" (1/1) ... [2022-11-23 14:04:45,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:45" (1/1) ... [2022-11-23 14:04:45,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:45" (1/1) ... [2022-11-23 14:04:45,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:45" (1/1) ... [2022-11-23 14:04:45,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:45" (1/1) ... [2022-11-23 14:04:45,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:45" (1/1) ... [2022-11-23 14:04:45,544 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:45" (1/1) ... [2022-11-23 14:04:45,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:45" (1/1) ... [2022-11-23 14:04:45,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:04:45,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:04:45,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:04:45,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:04:45,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:45" (1/1) ... [2022-11-23 14:04:45,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:04:45,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:04:45,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:04:45,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:04:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:04:45,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:04:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:04:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:04:45,667 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:04:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2022-11-23 14:04:45,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2022-11-23 14:04:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-11-23 14:04:45,668 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-11-23 14:04:45,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:04:45,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:04:45,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 14:04:45,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 14:04:45,668 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:04:45,668 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:04:45,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:04:45,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:04:45,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2022-11-23 14:04:45,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2022-11-23 14:04:45,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 14:04:45,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 14:04:45,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:04:45,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:04:45,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:04:45,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:04:45,671 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2022-11-23 14:04:45,671 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2022-11-23 14:04:45,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:04:45,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:04:45,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:04:46,175 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:04:46,178 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:04:46,295 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:04:47,425 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:04:47,602 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:04:47,603 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:04:47,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:04:47 BoogieIcfgContainer [2022-11-23 14:04:47,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:04:47,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:04:47,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:04:47,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:04:47,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:04:43" (1/3) ... [2022-11-23 14:04:47,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e8a006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:04:47, skipping insertion in model container [2022-11-23 14:04:47,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:45" (2/3) ... [2022-11-23 14:04:47,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e8a006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:04:47, skipping insertion in model container [2022-11-23 14:04:47,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:04:47" (3/3) ... [2022-11-23 14:04:47,618 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2022-11-23 14:04:47,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:04:47,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:04:47,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:04:47,708 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;@6eb68086, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:04:47,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:04:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 100 states have (on average 1.55) internal successors, (155), 116 states have internal predecessors, (155), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-23 14:04:47,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 14:04:47,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:47,731 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:47,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:47,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:47,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1946432061, now seen corresponding path program 1 times [2022-11-23 14:04:47,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:47,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822486280] [2022-11-23 14:04:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:47,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:48,746 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-23 14:04:48,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:48,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822486280] [2022-11-23 14:04:48,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822486280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:48,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:48,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:48,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793139450] [2022-11-23 14:04:48,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:48,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:04:48,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:48,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:04:48,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:48,799 INFO L87 Difference]: Start difference. First operand has 145 states, 100 states have (on average 1.55) internal successors, (155), 116 states have internal predecessors, (155), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-23 14:04:49,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:49,100 INFO L93 Difference]: Finished difference Result 391 states and 579 transitions. [2022-11-23 14:04:49,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:04:49,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 86 [2022-11-23 14:04:49,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:49,119 INFO L225 Difference]: With dead ends: 391 [2022-11-23 14:04:49,120 INFO L226 Difference]: Without dead ends: 238 [2022-11-23 14:04:49,125 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 [2022-11-23 14:04:49,133 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 159 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:49,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 377 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:04:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-23 14:04:49,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2022-11-23 14:04:49,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 180 states have (on average 1.4444444444444444) internal successors, (260), 185 states have internal predecessors, (260), 37 states have call successors, (37), 17 states have call predecessors, (37), 16 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-23 14:04:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 328 transitions. [2022-11-23 14:04:49,229 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 328 transitions. Word has length 86 [2022-11-23 14:04:49,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:49,230 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 328 transitions. [2022-11-23 14:04:49,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-23 14:04:49,230 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 328 transitions. [2022-11-23 14:04:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 14:04:49,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:49,234 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:49,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:04:49,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1582708866, now seen corresponding path program 1 times [2022-11-23 14:04:49,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:49,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810913113] [2022-11-23 14:04:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:49,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-23 14:04:49,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:49,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810913113] [2022-11-23 14:04:49,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810913113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:49,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:49,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:49,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102092985] [2022-11-23 14:04:49,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:49,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:04:49,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:49,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:04:49,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:49,584 INFO L87 Difference]: Start difference. First operand 234 states and 328 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:04:49,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:49,737 INFO L93 Difference]: Finished difference Result 503 states and 717 transitions. [2022-11-23 14:04:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:04:49,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2022-11-23 14:04:49,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:49,741 INFO L225 Difference]: With dead ends: 503 [2022-11-23 14:04:49,741 INFO L226 Difference]: Without dead ends: 293 [2022-11-23 14:04:49,746 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 [2022-11-23 14:04:49,749 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 141 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:49,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 330 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:49,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-11-23 14:04:49,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 270. [2022-11-23 14:04:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 215 states have (on average 1.4883720930232558) internal successors, (320), 220 states have internal predecessors, (320), 39 states have call successors, (39), 16 states have call predecessors, (39), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-23 14:04:49,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 392 transitions. [2022-11-23 14:04:49,803 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 392 transitions. Word has length 89 [2022-11-23 14:04:49,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:49,805 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 392 transitions. [2022-11-23 14:04:49,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:04:49,806 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 392 transitions. [2022-11-23 14:04:49,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-23 14:04:49,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:49,816 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:49,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:04:49,816 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:49,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:49,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1125509975, now seen corresponding path program 1 times [2022-11-23 14:04:49,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:49,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863272277] [2022-11-23 14:04:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:49,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-23 14:04:50,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:50,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863272277] [2022-11-23 14:04:50,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863272277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:50,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:50,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:50,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070652047] [2022-11-23 14:04:50,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:50,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:04:50,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:50,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:04:50,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:50,304 INFO L87 Difference]: Start difference. First operand 270 states and 392 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:04:50,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:50,395 INFO L93 Difference]: Finished difference Result 272 states and 393 transitions. [2022-11-23 14:04:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:04:50,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 100 [2022-11-23 14:04:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:50,401 INFO L225 Difference]: With dead ends: 272 [2022-11-23 14:04:50,401 INFO L226 Difference]: Without dead ends: 269 [2022-11-23 14:04:50,402 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 [2022-11-23 14:04:50,405 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:50,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 162 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:50,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-23 14:04:50,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-11-23 14:04:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 215 states have (on average 1.4837209302325582) internal successors, (319), 219 states have internal predecessors, (319), 38 states have call successors, (38), 16 states have call predecessors, (38), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-23 14:04:50,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 390 transitions. [2022-11-23 14:04:50,431 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 390 transitions. Word has length 100 [2022-11-23 14:04:50,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:50,434 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 390 transitions. [2022-11-23 14:04:50,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:04:50,435 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 390 transitions. [2022-11-23 14:04:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-23 14:04:50,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:50,444 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:50,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:04:50,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash 531084587, now seen corresponding path program 1 times [2022-11-23 14:04:50,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:50,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965470489] [2022-11-23 14:04:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:50,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-23 14:04:50,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:50,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965470489] [2022-11-23 14:04:50,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965470489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:50,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:50,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:50,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870391432] [2022-11-23 14:04:50,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:50,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:04:50,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:50,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:04:50,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:50,819 INFO L87 Difference]: Start difference. First operand 269 states and 390 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:04:50,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:50,914 INFO L93 Difference]: Finished difference Result 271 states and 391 transitions. [2022-11-23 14:04:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:04:50,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2022-11-23 14:04:50,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:50,919 INFO L225 Difference]: With dead ends: 271 [2022-11-23 14:04:50,920 INFO L226 Difference]: Without dead ends: 268 [2022-11-23 14:04:50,920 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 [2022-11-23 14:04:50,922 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 154 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:50,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 160 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:50,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-23 14:04:50,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2022-11-23 14:04:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 215 states have (on average 1.4790697674418605) internal successors, (318), 218 states have internal predecessors, (318), 37 states have call successors, (37), 16 states have call predecessors, (37), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-23 14:04:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 388 transitions. [2022-11-23 14:04:50,949 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 388 transitions. Word has length 101 [2022-11-23 14:04:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:50,949 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 388 transitions. [2022-11-23 14:04:50,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:04:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 388 transitions. [2022-11-23 14:04:50,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-23 14:04:50,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:50,952 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:50,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:04:50,953 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:50,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:50,953 INFO L85 PathProgramCache]: Analyzing trace with hash -716228390, now seen corresponding path program 1 times [2022-11-23 14:04:50,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:50,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112119183] [2022-11-23 14:04:50,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:50,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-23 14:04:51,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:51,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112119183] [2022-11-23 14:04:51,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112119183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:51,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:51,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:51,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689396436] [2022-11-23 14:04:51,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:51,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:04:51,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:51,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:04:51,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:51,265 INFO L87 Difference]: Start difference. First operand 268 states and 388 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:04:51,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:51,367 INFO L93 Difference]: Finished difference Result 270 states and 389 transitions. [2022-11-23 14:04:51,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:04:51,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 102 [2022-11-23 14:04:51,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:51,370 INFO L225 Difference]: With dead ends: 270 [2022-11-23 14:04:51,371 INFO L226 Difference]: Without dead ends: 267 [2022-11-23 14:04:51,371 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 [2022-11-23 14:04:51,372 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:51,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 158 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:51,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-23 14:04:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-11-23 14:04:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 215 states have (on average 1.4744186046511627) internal successors, (317), 217 states have internal predecessors, (317), 36 states have call successors, (36), 16 states have call predecessors, (36), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-23 14:04:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 386 transitions. [2022-11-23 14:04:51,395 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 386 transitions. Word has length 102 [2022-11-23 14:04:51,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:51,396 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 386 transitions. [2022-11-23 14:04:51,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:04:51,397 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 386 transitions. [2022-11-23 14:04:51,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-23 14:04:51,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:51,398 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:51,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:04:51,399 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:51,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:51,400 INFO L85 PathProgramCache]: Analyzing trace with hash -728220146, now seen corresponding path program 1 times [2022-11-23 14:04:51,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:51,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184368955] [2022-11-23 14:04:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:51,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-23 14:04:51,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:51,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184368955] [2022-11-23 14:04:51,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184368955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:51,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:51,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:51,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245670444] [2022-11-23 14:04:51,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:51,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:04:51,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:51,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:04:51,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:51,686 INFO L87 Difference]: Start difference. First operand 267 states and 386 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:04:51,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:51,844 INFO L93 Difference]: Finished difference Result 619 states and 899 transitions. [2022-11-23 14:04:51,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:04:51,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 103 [2022-11-23 14:04:51,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:51,851 INFO L225 Difference]: With dead ends: 619 [2022-11-23 14:04:51,851 INFO L226 Difference]: Without dead ends: 435 [2022-11-23 14:04:51,852 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 [2022-11-23 14:04:51,854 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 141 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:51,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 312 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-23 14:04:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 432. [2022-11-23 14:04:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 352 states have (on average 1.4801136363636365) internal successors, (521), 354 states have internal predecessors, (521), 55 states have call successors, (55), 26 states have call predecessors, (55), 24 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-23 14:04:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 628 transitions. [2022-11-23 14:04:51,893 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 628 transitions. Word has length 103 [2022-11-23 14:04:51,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:51,894 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 628 transitions. [2022-11-23 14:04:51,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:04:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 628 transitions. [2022-11-23 14:04:51,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-23 14:04:51,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:51,899 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-11-23 14:04:51,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:04:51,899 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:51,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:51,900 INFO L85 PathProgramCache]: Analyzing trace with hash -253750851, now seen corresponding path program 1 times [2022-11-23 14:04:51,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:51,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746855032] [2022-11-23 14:04:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:51,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-23 14:04:52,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:52,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746855032] [2022-11-23 14:04:52,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746855032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:52,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:52,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:52,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210673481] [2022-11-23 14:04:52,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:52,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:04:52,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:52,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:04:52,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:52,220 INFO L87 Difference]: Start difference. First operand 432 states and 628 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 14:04:52,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:52,380 INFO L93 Difference]: Finished difference Result 778 states and 1130 transitions. [2022-11-23 14:04:52,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:04:52,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 117 [2022-11-23 14:04:52,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:52,383 INFO L225 Difference]: With dead ends: 778 [2022-11-23 14:04:52,383 INFO L226 Difference]: Without dead ends: 434 [2022-11-23 14:04:52,384 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 [2022-11-23 14:04:52,384 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 150 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:52,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 424 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:52,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-23 14:04:52,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 432. [2022-11-23 14:04:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 352 states have (on average 1.4744318181818181) internal successors, (519), 354 states have internal predecessors, (519), 55 states have call successors, (55), 26 states have call predecessors, (55), 24 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-23 14:04:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 625 transitions. [2022-11-23 14:04:52,415 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 625 transitions. Word has length 117 [2022-11-23 14:04:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:52,416 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 625 transitions. [2022-11-23 14:04:52,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 14:04:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 625 transitions. [2022-11-23 14:04:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-23 14:04:52,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:52,418 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-11-23 14:04:52,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:04:52,419 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:52,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:52,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1098078664, now seen corresponding path program 1 times [2022-11-23 14:04:52,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:52,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824778984] [2022-11-23 14:04:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:52,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-11-23 14:04:53,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:53,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824778984] [2022-11-23 14:04:53,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824778984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:53,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:53,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:04:53,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829632976] [2022-11-23 14:04:53,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:53,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:04:53,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:53,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:04:53,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:04:53,216 INFO L87 Difference]: Start difference. First operand 432 states and 625 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-23 14:04:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:53,584 INFO L93 Difference]: Finished difference Result 1038 states and 1545 transitions. [2022-11-23 14:04:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:04:53,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 121 [2022-11-23 14:04:53,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:53,588 INFO L225 Difference]: With dead ends: 1038 [2022-11-23 14:04:53,588 INFO L226 Difference]: Without dead ends: 694 [2022-11-23 14:04:53,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:04:53,590 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 205 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:53,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1890 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:04:53,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-11-23 14:04:53,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 432. [2022-11-23 14:04:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 353 states have (on average 1.4702549575070822) internal successors, (519), 354 states have internal predecessors, (519), 54 states have call successors, (54), 26 states have call predecessors, (54), 24 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-23 14:04:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 624 transitions. [2022-11-23 14:04:53,632 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 624 transitions. Word has length 121 [2022-11-23 14:04:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:53,632 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 624 transitions. [2022-11-23 14:04:53,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-23 14:04:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 624 transitions. [2022-11-23 14:04:53,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-23 14:04:53,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:53,635 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:53,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:04:53,636 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:53,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:53,636 INFO L85 PathProgramCache]: Analyzing trace with hash 851409998, now seen corresponding path program 1 times [2022-11-23 14:04:53,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:53,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384239599] [2022-11-23 14:04:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:53,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-11-23 14:04:54,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:54,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384239599] [2022-11-23 14:04:54,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384239599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:54,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:54,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:04:54,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064133578] [2022-11-23 14:04:54,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:54,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:04:54,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:54,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:04:54,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:04:54,146 INFO L87 Difference]: Start difference. First operand 432 states and 624 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 14:04:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:54,327 INFO L93 Difference]: Finished difference Result 560 states and 830 transitions. [2022-11-23 14:04:54,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:04:54,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 130 [2022-11-23 14:04:54,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:54,329 INFO L225 Difference]: With dead ends: 560 [2022-11-23 14:04:54,329 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:04:54,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:04:54,330 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 195 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:54,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 550 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:54,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:04:54,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:04:54,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:04:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:04:54,332 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 130 [2022-11-23 14:04:54,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:54,332 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:04:54,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 14:04:54,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:04:54,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:04:54,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:04:54,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:04:54,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 14:04:55,806 INFO L902 garLoopResultBuilder]: At program point usbnet_disconnectENTRY(lines 7015 7017) the Hoare annotation is: true [2022-11-23 14:04:55,806 INFO L899 garLoopResultBuilder]: For program point usbnet_disconnectEXIT(lines 7015 7017) no Hoare annotation was computed. [2022-11-23 14:04:55,806 INFO L895 garLoopResultBuilder]: At program point ldv_mutex_lock_udevENTRY(lines 6853 6863) the Hoare annotation is: (or (not (= |old(~ldv_mutex_udev~0)| 1)) (not (= ~ldv_mutex_lock~0 1)) (not (= ~ldv_mutex_i_mutex_of_inode~0 1)) (not (= 1 ~ldv_mutex_mutex_of_device~0)) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,806 INFO L899 garLoopResultBuilder]: For program point L6856-1(lines 6856 6859) no Hoare annotation was computed. [2022-11-23 14:04:55,806 INFO L899 garLoopResultBuilder]: For program point L6856(lines 6856 6859) no Hoare annotation was computed. [2022-11-23 14:04:55,807 INFO L895 garLoopResultBuilder]: At program point L6857(line 6857) the Hoare annotation is: (or (not (= |old(~ldv_mutex_udev~0)| 1)) (not (= ~ldv_mutex_lock~0 1)) (not (= ~ldv_mutex_i_mutex_of_inode~0 1)) (not (= 1 ~ldv_mutex_mutex_of_device~0))) [2022-11-23 14:04:55,807 INFO L899 garLoopResultBuilder]: For program point ldv_mutex_lock_udevEXIT(lines 6853 6863) no Hoare annotation was computed. [2022-11-23 14:04:55,807 INFO L899 garLoopResultBuilder]: For program point L5762-1(line 5762) no Hoare annotation was computed. [2022-11-23 14:04:55,807 INFO L899 garLoopResultBuilder]: For program point ldv_init_zallocEXIT(lines 5757 5767) no Hoare annotation was computed. [2022-11-23 14:04:55,807 INFO L902 garLoopResultBuilder]: At program point ldv_init_zallocENTRY(lines 5757 5767) the Hoare annotation is: true [2022-11-23 14:04:55,807 INFO L899 garLoopResultBuilder]: For program point L5764-1(line 5764) no Hoare annotation was computed. [2022-11-23 14:04:55,807 INFO L902 garLoopResultBuilder]: At program point L5762(line 5762) the Hoare annotation is: true [2022-11-23 14:04:55,807 INFO L902 garLoopResultBuilder]: At program point L5764(line 5764) the Hoare annotation is: true [2022-11-23 14:04:55,807 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 5720 5722) the Hoare annotation is: true [2022-11-23 14:04:55,807 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 5720 5722) no Hoare annotation was computed. [2022-11-23 14:04:55,808 INFO L902 garLoopResultBuilder]: At program point ldv_undef_intENTRY(lines 5776 5783) the Hoare annotation is: true [2022-11-23 14:04:55,808 INFO L899 garLoopResultBuilder]: For program point ldv_undef_intEXIT(lines 5776 5783) no Hoare annotation was computed. [2022-11-23 14:04:55,808 INFO L902 garLoopResultBuilder]: At program point ldv_errorENTRY(lines 6329 6335) the Hoare annotation is: true [2022-11-23 14:04:55,808 INFO L899 garLoopResultBuilder]: For program point ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6333) no Hoare annotation was computed. [2022-11-23 14:04:55,808 INFO L899 garLoopResultBuilder]: For program point ldv_errorEXIT(lines 6329 6335) no Hoare annotation was computed. [2022-11-23 14:04:55,808 INFO L899 garLoopResultBuilder]: For program point ldv_stopEXIT(lines 5792 5798) no Hoare annotation was computed. [2022-11-23 14:04:55,808 INFO L902 garLoopResultBuilder]: At program point ldv_stopENTRY(lines 5792 5798) the Hoare annotation is: true [2022-11-23 14:04:55,808 INFO L899 garLoopResultBuilder]: For program point L6047(lines 6047 6062) no Hoare annotation was computed. [2022-11-23 14:04:55,808 INFO L899 garLoopResultBuilder]: For program point L6080-2(lines 6067 6122) no Hoare annotation was computed. [2022-11-23 14:04:55,808 INFO L899 garLoopResultBuilder]: For program point L6080(lines 6080 6085) no Hoare annotation was computed. [2022-11-23 14:04:55,809 INFO L899 garLoopResultBuilder]: For program point L6213(line 6213) no Hoare annotation was computed. [2022-11-23 14:04:55,809 INFO L895 garLoopResultBuilder]: At program point L6081(line 6081) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,809 INFO L899 garLoopResultBuilder]: For program point L6081-1(line 6081) no Hoare annotation was computed. [2022-11-23 14:04:55,809 INFO L899 garLoopResultBuilder]: For program point L6973(lines 6964 6982) no Hoare annotation was computed. [2022-11-23 14:04:55,809 INFO L902 garLoopResultBuilder]: At program point L6214(line 6214) the Hoare annotation is: true [2022-11-23 14:04:55,809 INFO L895 garLoopResultBuilder]: At program point L6974(line 6974) the Hoare annotation is: false [2022-11-23 14:04:55,809 INFO L899 garLoopResultBuilder]: For program point L6049(lines 6049 6059) no Hoare annotation was computed. [2022-11-23 14:04:55,809 INFO L899 garLoopResultBuilder]: For program point L6050(line 6050) no Hoare annotation was computed. [2022-11-23 14:04:55,809 INFO L895 garLoopResultBuilder]: At program point L5852(lines 5852 5855) the Hoare annotation is: (let ((.cse0 (= 1 ~ldv_mutex_mutex_of_device~0)) (.cse1 (= ~ldv_mutex_i_mutex_of_inode~0 1)) (.cse2 (= ~ldv_mutex_lock~0 1))) (or (and .cse0 (= |ULTIMATE.start_m5632_recover_~r~0#1| 0) .cse1 (= |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| 0) .cse2 (= 2 ~ldv_mutex_udev~0)) (and .cse0 .cse1 .cse2 (<= (+ |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| 1) 0) (<= (+ |ULTIMATE.start_m5632_recover_~r~0#1| 1) 0) (= ~ldv_mutex_udev~0 1)))) [2022-11-23 14:04:55,810 INFO L899 garLoopResultBuilder]: For program point L6051(lines 6051 6055) no Hoare annotation was computed. [2022-11-23 14:04:55,810 INFO L899 garLoopResultBuilder]: For program point L6184(line 6184) no Hoare annotation was computed. [2022-11-23 14:04:55,810 INFO L899 garLoopResultBuilder]: For program point L6052-1(line 6052) no Hoare annotation was computed. [2022-11-23 14:04:55,810 INFO L895 garLoopResultBuilder]: At program point L6052(line 6052) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,810 INFO L902 garLoopResultBuilder]: At program point L6977(lines 6962 6983) the Hoare annotation is: true [2022-11-23 14:04:55,810 INFO L899 garLoopResultBuilder]: For program point L6185(lines 6185 6200) no Hoare annotation was computed. [2022-11-23 14:04:55,810 INFO L895 garLoopResultBuilder]: At program point L6978(line 6978) the Hoare annotation is: false [2022-11-23 14:04:55,810 INFO L899 garLoopResultBuilder]: For program point L6945-1(line 6945) no Hoare annotation was computed. [2022-11-23 14:04:55,810 INFO L895 garLoopResultBuilder]: At program point L6945(line 6945) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,811 INFO L895 garLoopResultBuilder]: At program point L6087(line 6087) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,811 INFO L899 garLoopResultBuilder]: For program point L6087-1(line 6087) no Hoare annotation was computed. [2022-11-23 14:04:55,811 INFO L895 garLoopResultBuilder]: At program point L6153(lines 6002 6228) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,811 INFO L899 garLoopResultBuilder]: For program point L6120(line 6120) no Hoare annotation was computed. [2022-11-23 14:04:55,811 INFO L899 garLoopResultBuilder]: For program point L6946(lines 6946 6952) no Hoare annotation was computed. [2022-11-23 14:04:55,811 INFO L899 garLoopResultBuilder]: For program point L6187(lines 6187 6197) no Hoare annotation was computed. [2022-11-23 14:04:55,811 INFO L899 garLoopResultBuilder]: For program point L6220(line 6220) no Hoare annotation was computed. [2022-11-23 14:04:55,811 INFO L902 garLoopResultBuilder]: At program point L6121(line 6121) the Hoare annotation is: true [2022-11-23 14:04:55,811 INFO L899 garLoopResultBuilder]: For program point L6947-1(line 6947) no Hoare annotation was computed. [2022-11-23 14:04:55,811 INFO L895 garLoopResultBuilder]: At program point L6947(line 6947) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,812 INFO L902 garLoopResultBuilder]: At program point L6221(line 6221) the Hoare annotation is: true [2022-11-23 14:04:55,812 INFO L899 garLoopResultBuilder]: For program point L6188(line 6188) no Hoare annotation was computed. [2022-11-23 14:04:55,812 INFO L895 garLoopResultBuilder]: At program point L5858(lines 5843 5860) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,812 INFO L899 garLoopResultBuilder]: For program point L6189(lines 6189 6193) no Hoare annotation was computed. [2022-11-23 14:04:55,812 INFO L899 garLoopResultBuilder]: For program point L6057(line 6057) no Hoare annotation was computed. [2022-11-23 14:04:55,812 INFO L895 garLoopResultBuilder]: At program point L6223(lines 6002 6228) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,812 INFO L895 garLoopResultBuilder]: At program point L6190(line 6190) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,812 INFO L902 garLoopResultBuilder]: At program point L6058(line 6058) the Hoare annotation is: true [2022-11-23 14:04:55,812 INFO L899 garLoopResultBuilder]: For program point L6190-1(line 6190) no Hoare annotation was computed. [2022-11-23 14:04:55,813 INFO L895 garLoopResultBuilder]: At program point L6950(line 6950) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,813 INFO L895 garLoopResultBuilder]: At program point L6917-1(lines 6917 6920) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= |ULTIMATE.start_m5632_recover_~r~0#1| 0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| 0) (= ~ldv_mutex_lock~0 1) (= 2 ~ldv_mutex_udev~0)) [2022-11-23 14:04:55,813 INFO L899 garLoopResultBuilder]: For program point L6950-1(line 6950) no Hoare annotation was computed. [2022-11-23 14:04:55,813 INFO L899 garLoopResultBuilder]: For program point L6917(lines 6917 6920) no Hoare annotation was computed. [2022-11-23 14:04:55,813 INFO L895 garLoopResultBuilder]: At program point L6918(line 6918) the Hoare annotation is: false [2022-11-23 14:04:55,813 INFO L895 garLoopResultBuilder]: At program point L6951(lines 6940 6954) the Hoare annotation is: (let ((.cse0 (= 1 ~ldv_mutex_mutex_of_device~0)) (.cse1 (= ~ldv_mutex_i_mutex_of_inode~0 1)) (.cse2 (= ~ldv_mutex_lock~0 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| 0) .cse2 (= 2 ~ldv_mutex_udev~0)) (and .cse0 .cse1 .cse2 (<= (+ |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| 1) 0) (= ~ldv_mutex_udev~0 1)))) [2022-11-23 14:04:55,813 INFO L899 garLoopResultBuilder]: For program point L6159(line 6159) no Hoare annotation was computed. [2022-11-23 14:04:55,813 INFO L899 garLoopResultBuilder]: For program point L6027(lines 6027 6222) no Hoare annotation was computed. [2022-11-23 14:04:55,813 INFO L895 garLoopResultBuilder]: At program point L6093(line 6093) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,814 INFO L899 garLoopResultBuilder]: For program point L6127(line 6127) no Hoare annotation was computed. [2022-11-23 14:04:55,814 INFO L902 garLoopResultBuilder]: At program point L6160(line 6160) the Hoare annotation is: true [2022-11-23 14:04:55,814 INFO L899 garLoopResultBuilder]: For program point L6028(line 6028) no Hoare annotation was computed. [2022-11-23 14:04:55,814 INFO L899 garLoopResultBuilder]: For program point L6128(lines 6128 6164) no Hoare annotation was computed. [2022-11-23 14:04:55,814 INFO L899 garLoopResultBuilder]: For program point L6029(lines 6029 6044) no Hoare annotation was computed. [2022-11-23 14:04:55,814 INFO L899 garLoopResultBuilder]: For program point L6195(line 6195) no Hoare annotation was computed. [2022-11-23 14:04:55,814 INFO L899 garLoopResultBuilder]: For program point L6130(lines 6130 6161) no Hoare annotation was computed. [2022-11-23 14:04:55,819 INFO L902 garLoopResultBuilder]: At program point L6196(line 6196) the Hoare annotation is: true [2022-11-23 14:04:55,820 INFO L899 garLoopResultBuilder]: For program point L6031(lines 6031 6041) no Hoare annotation was computed. [2022-11-23 14:04:55,820 INFO L899 garLoopResultBuilder]: For program point L6064(line 6064) no Hoare annotation was computed. [2022-11-23 14:04:55,820 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 14:04:55,820 INFO L899 garLoopResultBuilder]: For program point L6131(line 6131) no Hoare annotation was computed. [2022-11-23 14:04:55,821 INFO L899 garLoopResultBuilder]: For program point L6065(lines 6065 6125) no Hoare annotation was computed. [2022-11-23 14:04:55,821 INFO L899 garLoopResultBuilder]: For program point L6032(line 6032) no Hoare annotation was computed. [2022-11-23 14:04:55,821 INFO L895 garLoopResultBuilder]: At program point L6132(lines 6132 6137) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,821 INFO L899 garLoopResultBuilder]: For program point L6033(lines 6033 6037) no Hoare annotation was computed. [2022-11-23 14:04:55,821 INFO L899 garLoopResultBuilder]: For program point L6166(line 6166) no Hoare annotation was computed. [2022-11-23 14:04:55,822 INFO L899 garLoopResultBuilder]: For program point L6067(lines 6067 6122) no Hoare annotation was computed. [2022-11-23 14:04:55,822 INFO L895 garLoopResultBuilder]: At program point L6100(line 6100) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,823 INFO L899 garLoopResultBuilder]: For program point L6167(lines 6167 6182) no Hoare annotation was computed. [2022-11-23 14:04:55,823 INFO L895 garLoopResultBuilder]: At program point L6068(line 6068) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,823 INFO L895 garLoopResultBuilder]: At program point L6003(line 6003) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,823 INFO L899 garLoopResultBuilder]: For program point L6003-1(line 6003) no Hoare annotation was computed. [2022-11-23 14:04:55,823 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 14:04:55,823 INFO L899 garLoopResultBuilder]: For program point L6202(line 6202) no Hoare annotation was computed. [2022-11-23 14:04:55,824 INFO L899 garLoopResultBuilder]: For program point L6169(lines 6169 6179) no Hoare annotation was computed. [2022-11-23 14:04:55,824 INFO L899 garLoopResultBuilder]: For program point L6203(lines 6203 6218) no Hoare annotation was computed. [2022-11-23 14:04:55,824 INFO L899 garLoopResultBuilder]: For program point L6170(line 6170) no Hoare annotation was computed. [2022-11-23 14:04:55,824 INFO L895 garLoopResultBuilder]: At program point L6005(line 6005) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,824 INFO L899 garLoopResultBuilder]: For program point L6005-1(line 6005) no Hoare annotation was computed. [2022-11-23 14:04:55,824 INFO L899 garLoopResultBuilder]: For program point L6171(lines 6171 6175) no Hoare annotation was computed. [2022-11-23 14:04:55,825 INFO L899 garLoopResultBuilder]: For program point L6039(line 6039) no Hoare annotation was computed. [2022-11-23 14:04:55,825 INFO L899 garLoopResultBuilder]: For program point L6139(line 6139) no Hoare annotation was computed. [2022-11-23 14:04:55,825 INFO L899 garLoopResultBuilder]: For program point L6172-1(line 6172) no Hoare annotation was computed. [2022-11-23 14:04:55,825 INFO L899 garLoopResultBuilder]: For program point L6205(lines 6205 6215) no Hoare annotation was computed. [2022-11-23 14:04:55,825 INFO L895 garLoopResultBuilder]: At program point L6172(line 6172) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,825 INFO L895 garLoopResultBuilder]: At program point L6007(line 6007) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,826 INFO L899 garLoopResultBuilder]: For program point L6007-1(line 6007) no Hoare annotation was computed. [2022-11-23 14:04:55,826 INFO L895 garLoopResultBuilder]: At program point L5974(line 5974) the Hoare annotation is: (and (= ~ldv_state_variable_0~0 1) (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,826 INFO L902 garLoopResultBuilder]: At program point L6040(line 6040) the Hoare annotation is: true [2022-11-23 14:04:55,826 INFO L895 garLoopResultBuilder]: At program point L5974-1(line 5974) the Hoare annotation is: (and (= ~ldv_state_variable_0~0 1) (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,826 INFO L899 garLoopResultBuilder]: For program point L6965-1(lines 6964 6982) no Hoare annotation was computed. [2022-11-23 14:04:55,826 INFO L899 garLoopResultBuilder]: For program point L6965(lines 6965 6968) no Hoare annotation was computed. [2022-11-23 14:04:55,827 INFO L899 garLoopResultBuilder]: For program point L6206(line 6206) no Hoare annotation was computed. [2022-11-23 14:04:55,827 INFO L895 garLoopResultBuilder]: At program point L6140(lines 6140 6157) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,827 INFO L895 garLoopResultBuilder]: At program point L6966(line 6966) the Hoare annotation is: false [2022-11-23 14:04:55,827 INFO L899 garLoopResultBuilder]: For program point L6207(lines 6207 6211) no Hoare annotation was computed. [2022-11-23 14:04:55,827 INFO L895 garLoopResultBuilder]: At program point L6009(line 6009) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,827 INFO L899 garLoopResultBuilder]: For program point L6009-1(line 6009) no Hoare annotation was computed. [2022-11-23 14:04:55,828 INFO L899 garLoopResultBuilder]: For program point L6208-1(line 6208) no Hoare annotation was computed. [2022-11-23 14:04:55,828 INFO L895 garLoopResultBuilder]: At program point L6208(line 6208) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,828 INFO L899 garLoopResultBuilder]: For program point L6142-2(lines 6140 6156) no Hoare annotation was computed. [2022-11-23 14:04:55,828 INFO L895 garLoopResultBuilder]: At program point L6110(line 6110) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,828 INFO L895 garLoopResultBuilder]: At program point L6011(line 6011) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,828 INFO L895 garLoopResultBuilder]: At program point L-1-2(line -1) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,829 INFO L899 garLoopResultBuilder]: For program point L6011-1(line 6011) no Hoare annotation was computed. [2022-11-23 14:04:55,829 INFO L899 garLoopResultBuilder]: For program point L6969(lines 6964 6982) no Hoare annotation was computed. [2022-11-23 14:04:55,829 INFO L899 garLoopResultBuilder]: For program point L6177(line 6177) no Hoare annotation was computed. [2022-11-23 14:04:55,829 INFO L895 garLoopResultBuilder]: At program point L6970(line 6970) the Hoare annotation is: false [2022-11-23 14:04:55,829 INFO L902 garLoopResultBuilder]: At program point L6178(line 6178) the Hoare annotation is: true [2022-11-23 14:04:55,829 INFO L899 garLoopResultBuilder]: For program point L6079(line 6079) no Hoare annotation was computed. [2022-11-23 14:04:55,830 INFO L899 garLoopResultBuilder]: For program point L6046(line 6046) no Hoare annotation was computed. [2022-11-23 14:04:55,830 INFO L895 garLoopResultBuilder]: At program point L6013(line 6013) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,830 INFO L895 garLoopResultBuilder]: At program point L6013-1(line 6013) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-23 14:04:55,830 INFO L902 garLoopResultBuilder]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: true [2022-11-23 14:04:55,830 INFO L899 garLoopResultBuilder]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2022-11-23 14:04:55,830 INFO L902 garLoopResultBuilder]: At program point always_connectedENTRY(lines 5837 5842) the Hoare annotation is: true [2022-11-23 14:04:55,831 INFO L899 garLoopResultBuilder]: For program point always_connectedEXIT(lines 5837 5842) no Hoare annotation was computed. [2022-11-23 14:04:55,831 INFO L902 garLoopResultBuilder]: At program point ldv_undef_int_negativeENTRY(lines 6336 6349) the Hoare annotation is: true [2022-11-23 14:04:55,831 INFO L899 garLoopResultBuilder]: For program point L6343-1(lines 6343 6346) no Hoare annotation was computed. [2022-11-23 14:04:55,832 INFO L899 garLoopResultBuilder]: For program point L6343(lines 6343 6346) no Hoare annotation was computed. [2022-11-23 14:04:55,832 INFO L902 garLoopResultBuilder]: At program point L6344(line 6344) the Hoare annotation is: true [2022-11-23 14:04:55,832 INFO L899 garLoopResultBuilder]: For program point L6341-1(line 6341) no Hoare annotation was computed. [2022-11-23 14:04:55,832 INFO L899 garLoopResultBuilder]: For program point ldv_undef_int_negativeEXIT(lines 6336 6349) no Hoare annotation was computed. [2022-11-23 14:04:55,832 INFO L902 garLoopResultBuilder]: At program point L6341(line 6341) the Hoare annotation is: true [2022-11-23 14:04:55,836 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:55,838 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:04:55,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:04:55 BoogieIcfgContainer [2022-11-23 14:04:55,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:04:55,886 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:04:55,886 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:04:55,886 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:04:55,887 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:04:47" (3/4) ... [2022-11-23 14:04:55,890 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 14:04:55,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure usbnet_disconnect [2022-11-23 14:04:55,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_error [2022-11-23 14:04:55,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_mutex_lock_udev [2022-11-23 14:04:55,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_stop [2022-11-23 14:04:55,896 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_init_zalloc [2022-11-23 14:04:55,896 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-23 14:04:55,896 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_undef_int [2022-11-23 14:04:55,896 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.meminit [2022-11-23 14:04:55,896 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure always_connected [2022-11-23 14:04:55,897 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_undef_int_negative [2022-11-23 14:04:55,921 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 85 nodes and edges [2022-11-23 14:04:55,922 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-11-23 14:04:55,924 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-23 14:04:55,926 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 14:04:55,927 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 14:04:55,973 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((1 == ldv_mutex_mutex_of_device && r == 0) && ldv_mutex_i_mutex_of_inode == 1) && \result == 0) && ldv_mutex_lock == 1) && 2 == ldv_mutex_udev [2022-11-23 14:04:55,973 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && \result == 0) && ldv_mutex_lock == 1) && 2 == ldv_mutex_udev) || ((((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && \result + 1 <= 0) && ldv_mutex_udev == 1) [2022-11-23 14:04:55,974 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((1 == ldv_mutex_mutex_of_device && r == 0) && ldv_mutex_i_mutex_of_inode == 1) && \result == 0) && ldv_mutex_lock == 1) && 2 == ldv_mutex_udev) || (((((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && \result + 1 <= 0) && r + 1 <= 0) && ldv_mutex_udev == 1) [2022-11-23 14:04:56,277 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:04:56,277 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:04:56,278 INFO L158 Benchmark]: Toolchain (without parser) took 12577.66ms. Allocated memory was 161.5MB in the beginning and 400.6MB in the end (delta: 239.1MB). Free memory was 123.1MB in the beginning and 133.9MB in the end (delta: -10.8MB). Peak memory consumption was 227.9MB. Max. memory is 16.1GB. [2022-11-23 14:04:56,278 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 109.1MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:04:56,279 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1631.79ms. Allocated memory is still 161.5MB. Free memory was 123.1MB in the beginning and 90.6MB in the end (delta: 32.5MB). Peak memory consumption was 94.0MB. Max. memory is 16.1GB. [2022-11-23 14:04:56,279 INFO L158 Benchmark]: Boogie Procedure Inliner took 140.67ms. Allocated memory is still 161.5MB. Free memory was 90.6MB in the beginning and 82.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 14:04:56,280 INFO L158 Benchmark]: Boogie Preprocessor took 84.87ms. Allocated memory is still 161.5MB. Free memory was 82.2MB in the beginning and 73.2MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:04:56,280 INFO L158 Benchmark]: RCFGBuilder took 2044.72ms. Allocated memory was 161.5MB in the beginning and 211.8MB in the end (delta: 50.3MB). Free memory was 72.6MB in the beginning and 129.5MB in the end (delta: -56.9MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. [2022-11-23 14:04:56,281 INFO L158 Benchmark]: TraceAbstraction took 8276.33ms. Allocated memory was 211.8MB in the beginning and 400.6MB in the end (delta: 188.7MB). Free memory was 129.5MB in the beginning and 165.4MB in the end (delta: -35.9MB). Peak memory consumption was 153.9MB. Max. memory is 16.1GB. [2022-11-23 14:04:56,282 INFO L158 Benchmark]: Witness Printer took 391.52ms. Allocated memory is still 400.6MB. Free memory was 165.4MB in the beginning and 133.9MB in the end (delta: 31.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-23 14:04:56,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 109.1MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1631.79ms. Allocated memory is still 161.5MB. Free memory was 123.1MB in the beginning and 90.6MB in the end (delta: 32.5MB). Peak memory consumption was 94.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 140.67ms. Allocated memory is still 161.5MB. Free memory was 90.6MB in the beginning and 82.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.87ms. Allocated memory is still 161.5MB. Free memory was 82.2MB in the beginning and 73.2MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 2044.72ms. Allocated memory was 161.5MB in the beginning and 211.8MB in the end (delta: 50.3MB). Free memory was 72.6MB in the beginning and 129.5MB in the end (delta: -56.9MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8276.33ms. Allocated memory was 211.8MB in the beginning and 400.6MB in the end (delta: 188.7MB). Free memory was 129.5MB in the beginning and 165.4MB in the end (delta: -35.9MB). Peak memory consumption was 153.9MB. Max. memory is 16.1GB. * Witness Printer took 391.52ms. Allocated memory is still 400.6MB. Free memory was 165.4MB in the beginning and 133.9MB in the end (delta: 31.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6333]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 146 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1460 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1453 mSDsluCounter, 4363 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2425 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 542 IncrementalHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 1938 mSDtfsCounter, 542 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=432occurred in iteration=6, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 294 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 60 LocationsWithAnnotation, 356 PreInvPairs, 453 NumberOfFragments, 555 HoareAnnotationTreeSize, 356 FomulaSimplifications, 128 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 60 FomulaSimplificationsInter, 3288 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 949 NumberOfCodeBlocks, 949 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 940 ConstructedInterpolants, 0 QuantifiedInterpolants, 1224 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 1793/1793 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5843]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6093]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6002]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 5974]: Loop Invariant Derived loop invariant: (((ldv_state_variable_0 == 1 && 1 == ldv_mutex_mutex_of_device) && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6917]: Loop Invariant Derived loop invariant: ((((1 == ldv_mutex_mutex_of_device && r == 0) && ldv_mutex_i_mutex_of_inode == 1) && \result == 0) && ldv_mutex_lock == 1) && 2 == ldv_mutex_udev - InvariantResult [Line: 6068]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6962]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5852]: Loop Invariant Derived loop invariant: (((((1 == ldv_mutex_mutex_of_device && r == 0) && ldv_mutex_i_mutex_of_inode == 1) && \result == 0) && ldv_mutex_lock == 1) && 2 == ldv_mutex_udev) || (((((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && \result + 1 <= 0) && r + 1 <= 0) && ldv_mutex_udev == 1) - InvariantResult [Line: 6013]: Loop Invariant Derived loop invariant: (((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_state_variable_6 == 0) && ldv_mutex_udev == 1 - InvariantResult [Line: 6100]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6110]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: (((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_state_variable_6 == 0) && ldv_mutex_udev == 1 - InvariantResult [Line: 6002]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6140]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 5792]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6132]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6940]: Loop Invariant Derived loop invariant: ((((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && \result == 0) && ldv_mutex_lock == 1) && 2 == ldv_mutex_udev) || ((((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && \result + 1 <= 0) && ldv_mutex_udev == 1) RESULT: Ultimate proved your program to be correct! [2022-11-23 14:04:56,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835784f1-9a4c-421c-ad68-03744e11209a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE