./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:38:18,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:38:18,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:38:19,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:38:19,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:38:19,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:38:19,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:38:19,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:38:19,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:38:19,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:38:19,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:38:19,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:38:19,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:38:19,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:38:19,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:38:19,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:38:19,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:38:19,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:38:19,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:38:19,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:38:19,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:38:19,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:38:19,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:38:19,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:38:19,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:38:19,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:38:19,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:38:19,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:38:19,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:38:19,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:38:19,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:38:19,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:38:19,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:38:19,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:38:19,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:38:19,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:38:19,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:38:19,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:38:19,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:38:19,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:38:19,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:38:19,117 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:38:19,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:38:19,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:38:19,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:38:19,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:38:19,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:38:19,170 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:38:19,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:38:19,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:38:19,171 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:38:19,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:38:19,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:38:19,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:38:19,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:38:19,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:38:19,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:38:19,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:38:19,175 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:38:19,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:38:19,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:38:19,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:38:19,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:38:19,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:19,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:38:19,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:38:19,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:38:19,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:38:19,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:38:19,178 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:38:19,178 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:38:19,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:38:19,179 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_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 [2022-11-02 20:38:19,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:38:19,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:38:19,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:38:19,576 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:38:19,577 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:38:19,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-02 20:38:19,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/data/8ccdba8c6/36d1dff8e7424295b0221c1530cfa4ed/FLAGba0b30056 [2022-11-02 20:38:20,823 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:38:20,824 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-02 20:38:20,911 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/data/8ccdba8c6/36d1dff8e7424295b0221c1530cfa4ed/FLAGba0b30056 [2022-11-02 20:38:21,089 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/data/8ccdba8c6/36d1dff8e7424295b0221c1530cfa4ed [2022-11-02 20:38:21,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:38:21,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:38:21,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:21,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:38:21,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:38:21,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:21" (1/1) ... [2022-11-02 20:38:21,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be56e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:21, skipping insertion in model container [2022-11-02 20:38:21,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:21" (1/1) ... [2022-11-02 20:38:21,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:38:21,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:38:24,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2022-11-02 20:38:24,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:24,554 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:38:25,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2022-11-02 20:38:25,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:25,504 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:38:25,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25 WrapperNode [2022-11-02 20:38:25,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:25,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:25,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:38:25,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:38:25,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25" (1/1) ... [2022-11-02 20:38:25,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25" (1/1) ... [2022-11-02 20:38:26,049 INFO L138 Inliner]: procedures = 273, calls = 4073, calls flagged for inlining = 105, calls inlined = 96, statements flattened = 8857 [2022-11-02 20:38:26,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:26,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:38:26,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:38:26,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:38:26,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25" (1/1) ... [2022-11-02 20:38:26,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25" (1/1) ... [2022-11-02 20:38:26,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25" (1/1) ... [2022-11-02 20:38:26,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25" (1/1) ... [2022-11-02 20:38:26,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25" (1/1) ... [2022-11-02 20:38:26,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25" (1/1) ... [2022-11-02 20:38:26,623 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25" (1/1) ... [2022-11-02 20:38:26,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25" (1/1) ... [2022-11-02 20:38:26,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:38:26,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:38:26,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:38:26,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:38:26,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25" (1/1) ... [2022-11-02 20:38:26,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:26,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:26,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:38:26,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f25eaca-df30-4edd-bd4a-a0e587cf11f6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:38:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-02 20:38:26,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-02 20:38:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2022-11-02 20:38:26,834 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2022-11-02 20:38:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-02 20:38:26,835 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-02 20:38:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-02 20:38:26,835 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-02 20:38:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-02 20:38:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-02 20:38:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-02 20:38:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2022-11-02 20:38:26,836 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2022-11-02 20:38:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-02 20:38:26,837 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-02 20:38:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-11-02 20:38:26,837 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-11-02 20:38:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-02 20:38:26,837 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-02 20:38:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2022-11-02 20:38:26,837 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2022-11-02 20:38:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2022-11-02 20:38:26,838 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2022-11-02 20:38:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:38:26,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:38:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2022-11-02 20:38:26,838 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2022-11-02 20:38:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2022-11-02 20:38:26,839 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2022-11-02 20:38:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-11-02 20:38:26,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-11-02 20:38:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-11-02 20:38:26,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-11-02 20:38:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-02 20:38:26,840 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-02 20:38:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 20:38:26,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 20:38:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-02 20:38:26,840 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-02 20:38:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2022-11-02 20:38:26,841 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2022-11-02 20:38:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2022-11-02 20:38:26,841 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2022-11-02 20:38:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-02 20:38:26,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-02 20:38:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2022-11-02 20:38:26,842 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2022-11-02 20:38:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 20:38:26,842 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 20:38:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2022-11-02 20:38:26,843 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2022-11-02 20:38:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2022-11-02 20:38:26,843 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2022-11-02 20:38:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-02 20:38:26,844 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-02 20:38:26,844 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2022-11-02 20:38:26,844 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2022-11-02 20:38:26,846 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2022-11-02 20:38:26,846 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2022-11-02 20:38:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2022-11-02 20:38:26,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2022-11-02 20:38:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2022-11-02 20:38:26,847 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2022-11-02 20:38:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2022-11-02 20:38:26,847 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2022-11-02 20:38:26,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:38:26,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2022-11-02 20:38:26,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2022-11-02 20:38:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 20:38:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2022-11-02 20:38:26,849 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2022-11-02 20:38:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-02 20:38:26,850 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-02 20:38:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2022-11-02 20:38:26,852 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2022-11-02 20:38:26,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:38:26,852 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2022-11-02 20:38:26,853 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2022-11-02 20:38:26,853 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2022-11-02 20:38:26,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2022-11-02 20:38:26,853 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-02 20:38:26,853 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-02 20:38:26,853 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2022-11-02 20:38:26,853 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2022-11-02 20:38:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-02 20:38:26,854 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-02 20:38:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-11-02 20:38:26,854 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-11-02 20:38:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:38:26,855 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2022-11-02 20:38:26,855 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2022-11-02 20:38:26,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:38:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-02 20:38:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-02 20:38:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-02 20:38:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-02 20:38:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-02 20:38:26,857 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-02 20:38:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2022-11-02 20:38:26,858 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2022-11-02 20:38:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-02 20:38:26,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-02 20:38:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2022-11-02 20:38:26,859 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2022-11-02 20:38:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2022-11-02 20:38:26,860 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2022-11-02 20:38:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-02 20:38:26,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-02 20:38:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-02 20:38:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-02 20:38:26,860 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-02 20:38:26,861 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2022-11-02 20:38:26,861 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2022-11-02 20:38:26,861 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-11-02 20:38:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-11-02 20:38:26,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-02 20:38:26,862 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2022-11-02 20:38:26,863 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2022-11-02 20:38:26,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:38:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2022-11-02 20:38:26,867 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2022-11-02 20:38:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2022-11-02 20:38:26,867 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2022-11-02 20:38:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-02 20:38:26,869 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-02 20:38:26,871 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2022-11-02 20:38:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2022-11-02 20:38:26,871 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2022-11-02 20:38:26,875 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2022-11-02 20:38:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2022-11-02 20:38:26,876 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2022-11-02 20:38:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2022-11-02 20:38:26,876 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2022-11-02 20:38:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-02 20:38:26,876 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-02 20:38:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2022-11-02 20:38:26,877 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2022-11-02 20:38:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-02 20:38:26,877 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-02 20:38:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:38:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-02 20:38:26,877 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-02 20:38:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2022-11-02 20:38:26,878 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2022-11-02 20:38:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2022-11-02 20:38:26,878 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2022-11-02 20:38:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2022-11-02 20:38:26,878 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2022-11-02 20:38:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 20:38:26,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 20:38:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-11-02 20:38:26,879 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-11-02 20:38:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:38:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-02 20:38:26,879 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-02 20:38:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2022-11-02 20:38:26,880 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2022-11-02 20:38:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-02 20:38:26,880 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-02 20:38:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:38:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2022-11-02 20:38:26,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2022-11-02 20:38:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2022-11-02 20:38:26,881 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2022-11-02 20:38:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-02 20:38:26,881 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-02 20:38:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:38:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-02 20:38:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2022-11-02 20:38:26,882 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2022-11-02 20:38:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2022-11-02 20:38:26,882 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2022-11-02 20:38:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2022-11-02 20:38:26,882 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2022-11-02 20:38:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-02 20:38:26,882 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-02 20:38:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-02 20:38:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-02 20:38:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2022-11-02 20:38:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2022-11-02 20:38:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2022-11-02 20:38:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2022-11-02 20:38:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2022-11-02 20:38:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2022-11-02 20:38:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2022-11-02 20:38:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2022-11-02 20:38:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-02 20:38:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-02 20:38:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2022-11-02 20:38:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2022-11-02 20:38:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-02 20:38:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-02 20:38:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2022-11-02 20:38:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2022-11-02 20:38:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:38:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2022-11-02 20:38:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2022-11-02 20:38:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2022-11-02 20:38:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2022-11-02 20:38:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:38:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:38:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-02 20:38:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-02 20:38:28,320 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:38:28,324 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:38:47,040 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:38:47,075 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:38:47,075 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:38:47,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:47 BoogieIcfgContainer [2022-11-02 20:38:47,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:38:47,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:38:47,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:38:47,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:38:47,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:38:21" (1/3) ... [2022-11-02 20:38:47,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c03a656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:47, skipping insertion in model container [2022-11-02 20:38:47,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25" (2/3) ... [2022-11-02 20:38:47,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c03a656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:47, skipping insertion in model container [2022-11-02 20:38:47,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:47" (3/3) ... [2022-11-02 20:38:47,098 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-02 20:38:47,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:38:47,124 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:38:47,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:38:47,284 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=PETRI_NET, 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;@6adc83a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:38:47,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:38:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 2992 states, 2295 states have (on average 1.45359477124183) internal successors, (3336), 2321 states have internal predecessors, (3336), 603 states have call successors, (603), 92 states have call predecessors, (603), 92 states have return successors, (603), 600 states have call predecessors, (603), 603 states have call successors, (603) [2022-11-02 20:38:47,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 20:38:47,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:47,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:47,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:47,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:47,322 INFO L85 PathProgramCache]: Analyzing trace with hash 217154096, now seen corresponding path program 1 times [2022-11-02 20:38:47,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:47,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806489127] [2022-11-02 20:38:47,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:47,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:38:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:38:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:38:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:48,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:48,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806489127] [2022-11-02 20:38:48,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806489127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:48,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:48,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:38:48,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236185171] [2022-11-02 20:38:48,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:48,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:38:48,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:48,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:38:48,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:38:48,247 INFO L87 Difference]: Start difference. First operand has 2992 states, 2295 states have (on average 1.45359477124183) internal successors, (3336), 2321 states have internal predecessors, (3336), 603 states have call successors, (603), 92 states have call predecessors, (603), 92 states have return successors, (603), 600 states have call predecessors, (603), 603 states have call successors, (603) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 20:38:54,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:54,022 INFO L93 Difference]: Finished difference Result 6164 states and 9664 transitions. [2022-11-02 20:38:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:38:54,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-11-02 20:38:54,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:54,106 INFO L225 Difference]: With dead ends: 6164 [2022-11-02 20:38:54,107 INFO L226 Difference]: Without dead ends: 3170 [2022-11-02 20:38:54,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:38:54,169 INFO L413 NwaCegarLoop]: 4420 mSDtfsCounter, 4949 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5325 SdHoareTripleChecker+Valid, 7198 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:54,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5325 Valid, 7198 Invalid, 1716 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1014 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-02 20:38:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2022-11-02 20:38:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2981. [2022-11-02 20:38:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2286 states have (on average 1.4510061242344707) internal successors, (3317), 2310 states have internal predecessors, (3317), 603 states have call successors, (603), 92 states have call predecessors, (603), 91 states have return successors, (595), 592 states have call predecessors, (595), 595 states have call successors, (595) [2022-11-02 20:38:54,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 4515 transitions. [2022-11-02 20:38:54,564 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 4515 transitions. Word has length 38 [2022-11-02 20:38:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:54,565 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 4515 transitions. [2022-11-02 20:38:54,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 20:38:54,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 4515 transitions. [2022-11-02 20:38:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 20:38:54,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:54,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:54,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:38:54,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash 239786350, now seen corresponding path program 1 times [2022-11-02 20:38:54,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:54,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285239257] [2022-11-02 20:38:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:54,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:55,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:38:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:55,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:38:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:38:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:55,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:55,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:55,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285239257] [2022-11-02 20:38:55,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285239257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:55,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:55,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:38:55,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924324330] [2022-11-02 20:38:55,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:55,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:38:55,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:55,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:38:55,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:38:55,178 INFO L87 Difference]: Start difference. First operand 2981 states and 4515 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 20:38:59,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:39:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:07,852 INFO L93 Difference]: Finished difference Result 9219 states and 14105 transitions. [2022-11-02 20:39:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:39:07,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-11-02 20:39:07,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:07,925 INFO L225 Difference]: With dead ends: 9219 [2022-11-02 20:39:07,926 INFO L226 Difference]: Without dead ends: 6246 [2022-11-02 20:39:07,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:07,955 INFO L413 NwaCegarLoop]: 4915 mSDtfsCounter, 5538 mSDsluCounter, 6513 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 1608 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6001 SdHoareTripleChecker+Valid, 11428 SdHoareTripleChecker+Invalid, 3718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1608 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:07,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6001 Valid, 11428 Invalid, 3718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1608 Valid, 2109 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2022-11-02 20:39:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6246 states. [2022-11-02 20:39:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6246 to 5851. [2022-11-02 20:39:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5851 states, 4496 states have (on average 1.4519572953736655) internal successors, (6528), 4533 states have internal predecessors, (6528), 1174 states have call successors, (1174), 181 states have call predecessors, (1174), 180 states have return successors, (1166), 1160 states have call predecessors, (1166), 1166 states have call successors, (1166) [2022-11-02 20:39:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 8868 transitions. [2022-11-02 20:39:08,459 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 8868 transitions. Word has length 38 [2022-11-02 20:39:08,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:08,460 INFO L495 AbstractCegarLoop]: Abstraction has 5851 states and 8868 transitions. [2022-11-02 20:39:08,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 20:39:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 8868 transitions. [2022-11-02 20:39:08,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 20:39:08,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:08,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:08,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:39:08,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:08,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1625989744, now seen corresponding path program 1 times [2022-11-02 20:39:08,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:08,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196704723] [2022-11-02 20:39:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:08,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:08,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:39:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:39:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:39:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:08,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:08,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:08,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196704723] [2022-11-02 20:39:08,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196704723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:08,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:08,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:39:08,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540651116] [2022-11-02 20:39:08,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:08,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:39:08,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:08,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:39:08,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:08,942 INFO L87 Difference]: Start difference. First operand 5851 states and 8868 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:39:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:20,270 INFO L93 Difference]: Finished difference Result 18642 states and 29217 transitions. [2022-11-02 20:39:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:39:20,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2022-11-02 20:39:20,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:20,380 INFO L225 Difference]: With dead ends: 18642 [2022-11-02 20:39:20,380 INFO L226 Difference]: Without dead ends: 12831 [2022-11-02 20:39:20,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:20,424 INFO L413 NwaCegarLoop]: 7349 mSDtfsCounter, 4597 mSDsluCounter, 14261 mSDsCounter, 0 mSdLazyCounter, 3392 mSolverCounterSat, 1401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5190 SdHoareTripleChecker+Valid, 21610 SdHoareTripleChecker+Invalid, 4793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1401 IncrementalHoareTripleChecker+Valid, 3392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:20,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5190 Valid, 21610 Invalid, 4793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1401 Valid, 3392 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-11-02 20:39:20,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12831 states. [2022-11-02 20:39:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12831 to 5853. [2022-11-02 20:39:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5853 states, 4498 states have (on average 1.4517563361493997) internal successors, (6530), 4535 states have internal predecessors, (6530), 1174 states have call successors, (1174), 181 states have call predecessors, (1174), 180 states have return successors, (1166), 1160 states have call predecessors, (1166), 1166 states have call successors, (1166) [2022-11-02 20:39:20,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5853 states to 5853 states and 8870 transitions. [2022-11-02 20:39:20,973 INFO L78 Accepts]: Start accepts. Automaton has 5853 states and 8870 transitions. Word has length 38 [2022-11-02 20:39:20,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:20,974 INFO L495 AbstractCegarLoop]: Abstraction has 5853 states and 8870 transitions. [2022-11-02 20:39:20,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:39:20,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5853 states and 8870 transitions. [2022-11-02 20:39:20,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:39:20,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:20,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:20,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:39:20,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:20,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:20,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1138161737, now seen corresponding path program 1 times [2022-11-02 20:39:20,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:20,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532396141] [2022-11-02 20:39:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:20,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:21,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:39:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:21,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:39:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:21,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:39:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:39:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:21,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:21,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532396141] [2022-11-02 20:39:21,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532396141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:21,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:21,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:21,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096541914] [2022-11-02 20:39:21,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:21,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:21,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:21,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:21,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:21,443 INFO L87 Difference]: Start difference. First operand 5853 states and 8870 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:26,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:26,467 INFO L93 Difference]: Finished difference Result 6233 states and 9584 transitions. [2022-11-02 20:39:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:39:26,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2022-11-02 20:39:26,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:26,519 INFO L225 Difference]: With dead ends: 6233 [2022-11-02 20:39:26,520 INFO L226 Difference]: Without dead ends: 6230 [2022-11-02 20:39:26,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:26,528 INFO L413 NwaCegarLoop]: 4410 mSDtfsCounter, 4907 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5273 SdHoareTripleChecker+Valid, 7189 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1012 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:26,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5273 Valid, 7189 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1012 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-02 20:39:26,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2022-11-02 20:39:26,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 5852. [2022-11-02 20:39:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5852 states, 4498 states have (on average 1.4515340151178302) internal successors, (6529), 4534 states have internal predecessors, (6529), 1173 states have call successors, (1173), 181 states have call predecessors, (1173), 180 states have return successors, (1166), 1160 states have call predecessors, (1166), 1166 states have call successors, (1166) [2022-11-02 20:39:26,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 8868 transitions. [2022-11-02 20:39:26,938 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 8868 transitions. Word has length 43 [2022-11-02 20:39:26,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:26,939 INFO L495 AbstractCegarLoop]: Abstraction has 5852 states and 8868 transitions. [2022-11-02 20:39:26,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 8868 transitions. [2022-11-02 20:39:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-02 20:39:26,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:26,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:26,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:39:26,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:26,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:26,942 INFO L85 PathProgramCache]: Analyzing trace with hash 922151277, now seen corresponding path program 1 times [2022-11-02 20:39:26,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:26,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471537441] [2022-11-02 20:39:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:26,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:39:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:39:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:39:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:39:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:27,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:27,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471537441] [2022-11-02 20:39:27,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471537441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:27,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:27,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:27,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541689387] [2022-11-02 20:39:27,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:27,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:27,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:27,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:27,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:27,305 INFO L87 Difference]: Start difference. First operand 5852 states and 8868 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:28,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:39:36,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:36,594 INFO L93 Difference]: Finished difference Result 18176 states and 27858 transitions. [2022-11-02 20:39:36,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:39:36,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2022-11-02 20:39:36,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:36,689 INFO L225 Difference]: With dead ends: 18176 [2022-11-02 20:39:36,690 INFO L226 Difference]: Without dead ends: 12368 [2022-11-02 20:39:36,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:36,723 INFO L413 NwaCegarLoop]: 6684 mSDtfsCounter, 5411 mSDsluCounter, 7864 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 1394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5872 SdHoareTripleChecker+Valid, 14548 SdHoareTripleChecker+Invalid, 3538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1394 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:36,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5872 Valid, 14548 Invalid, 3538 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1394 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-02 20:39:36,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12368 states. [2022-11-02 20:39:37,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12368 to 11593. [2022-11-02 20:39:37,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11593 states, 8927 states have (on average 1.4532317687913072) internal successors, (12973), 8998 states have internal predecessors, (12973), 2309 states have call successors, (2309), 358 states have call predecessors, (2309), 356 states have return successors, (2310), 2282 states have call predecessors, (2310), 2298 states have call successors, (2310) [2022-11-02 20:39:37,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11593 states to 11593 states and 17592 transitions. [2022-11-02 20:39:37,526 INFO L78 Accepts]: Start accepts. Automaton has 11593 states and 17592 transitions. Word has length 44 [2022-11-02 20:39:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:37,527 INFO L495 AbstractCegarLoop]: Abstraction has 11593 states and 17592 transitions. [2022-11-02 20:39:37,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 11593 states and 17592 transitions. [2022-11-02 20:39:37,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 20:39:37,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:37,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:37,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:39:37,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:37,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:37,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1479200820, now seen corresponding path program 1 times [2022-11-02 20:39:37,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:37,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843486637] [2022-11-02 20:39:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:37,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:37,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:39:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:39:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:37,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:39:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:37,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:37,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:39:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:37,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:37,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843486637] [2022-11-02 20:39:37,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843486637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:37,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:37,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:37,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965949515] [2022-11-02 20:39:37,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:37,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:37,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:37,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:37,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:37,809 INFO L87 Difference]: Start difference. First operand 11593 states and 17592 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:42,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:42,631 INFO L93 Difference]: Finished difference Result 12351 states and 19018 transitions. [2022-11-02 20:39:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:39:42,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-11-02 20:39:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:42,737 INFO L225 Difference]: With dead ends: 12351 [2022-11-02 20:39:42,737 INFO L226 Difference]: Without dead ends: 12348 [2022-11-02 20:39:42,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:42,752 INFO L413 NwaCegarLoop]: 4400 mSDtfsCounter, 4903 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5277 SdHoareTripleChecker+Valid, 7170 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1011 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:42,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5277 Valid, 7170 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1011 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-02 20:39:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2022-11-02 20:39:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 11592. [2022-11-02 20:39:43,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11592 states, 8927 states have (on average 1.4531197490758374) internal successors, (12972), 8997 states have internal predecessors, (12972), 2308 states have call successors, (2308), 358 states have call predecessors, (2308), 356 states have return successors, (2310), 2282 states have call predecessors, (2310), 2298 states have call successors, (2310) [2022-11-02 20:39:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11592 states to 11592 states and 17590 transitions. [2022-11-02 20:39:43,712 INFO L78 Accepts]: Start accepts. Automaton has 11592 states and 17590 transitions. Word has length 45 [2022-11-02 20:39:43,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:43,713 INFO L495 AbstractCegarLoop]: Abstraction has 11592 states and 17590 transitions. [2022-11-02 20:39:43,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 11592 states and 17590 transitions. [2022-11-02 20:39:43,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-02 20:39:43,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:43,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:43,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:39:43,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:43,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:43,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1388300368, now seen corresponding path program 1 times [2022-11-02 20:39:43,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:43,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822410199] [2022-11-02 20:39:43,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:43,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:43,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:39:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:43,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:39:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:43,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:39:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:43,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:43,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:39:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:44,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:44,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822410199] [2022-11-02 20:39:44,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822410199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:44,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:44,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:44,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251174097] [2022-11-02 20:39:44,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:44,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:44,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:44,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:44,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:44,015 INFO L87 Difference]: Start difference. First operand 11592 states and 17590 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:52,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:52,000 INFO L93 Difference]: Finished difference Result 17892 states and 27043 transitions. [2022-11-02 20:39:52,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:39:52,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-11-02 20:39:52,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:52,161 INFO L225 Difference]: With dead ends: 17892 [2022-11-02 20:39:52,162 INFO L226 Difference]: Without dead ends: 17822 [2022-11-02 20:39:52,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:52,189 INFO L413 NwaCegarLoop]: 4602 mSDtfsCounter, 3880 mSDsluCounter, 5615 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 1275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4185 SdHoareTripleChecker+Valid, 10217 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1275 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:52,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4185 Valid, 10217 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1275 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-02 20:39:52,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17822 states. [2022-11-02 20:39:53,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17822 to 16440. [2022-11-02 20:39:53,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16440 states, 12508 states have (on average 1.42972497601535) internal successors, (17883), 12600 states have internal predecessors, (17883), 3310 states have call successors, (3310), 623 states have call predecessors, (3310), 621 states have return successors, (3314), 3283 states have call predecessors, (3314), 3302 states have call successors, (3314) [2022-11-02 20:39:53,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16440 states to 16440 states and 24507 transitions. [2022-11-02 20:39:53,558 INFO L78 Accepts]: Start accepts. Automaton has 16440 states and 24507 transitions. Word has length 46 [2022-11-02 20:39:53,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:53,559 INFO L495 AbstractCegarLoop]: Abstraction has 16440 states and 24507 transitions. [2022-11-02 20:39:53,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:53,559 INFO L276 IsEmpty]: Start isEmpty. Operand 16440 states and 24507 transitions. [2022-11-02 20:39:53,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-02 20:39:53,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:53,565 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:53,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:39:53,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:53,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:53,566 INFO L85 PathProgramCache]: Analyzing trace with hash -237158953, now seen corresponding path program 1 times [2022-11-02 20:39:53,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:53,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087900162] [2022-11-02 20:39:53,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:53,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:39:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:53,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:39:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:53,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:39:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:53,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:53,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:39:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 20:39:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:54,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:39:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:54,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:39:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:39:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 20:39:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:39:54,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:54,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087900162] [2022-11-02 20:39:54,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087900162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:54,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:54,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:39:54,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367160448] [2022-11-02 20:39:54,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:54,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:39:54,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:54,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:39:54,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:54,049 INFO L87 Difference]: Start difference. First operand 16440 states and 24507 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 20:39:55,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:40:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:08,136 INFO L93 Difference]: Finished difference Result 36207 states and 54686 transitions. [2022-11-02 20:40:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:40:08,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2022-11-02 20:40:08,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:08,293 INFO L225 Difference]: With dead ends: 36207 [2022-11-02 20:40:08,293 INFO L226 Difference]: Without dead ends: 19822 [2022-11-02 20:40:08,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:08,402 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 3791 mSDsluCounter, 3951 mSDsCounter, 0 mSdLazyCounter, 5767 mSolverCounterSat, 1740 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4304 SdHoareTripleChecker+Valid, 8179 SdHoareTripleChecker+Invalid, 7507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1740 IncrementalHoareTripleChecker+Valid, 5767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:08,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4304 Valid, 8179 Invalid, 7507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1740 Valid, 5767 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-11-02 20:40:08,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19822 states. [2022-11-02 20:40:09,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19822 to 17838. [2022-11-02 20:40:09,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17838 states, 13648 states have (on average 1.4369138335287222) internal successors, (19611), 13752 states have internal predecessors, (19611), 3568 states have call successors, (3568), 623 states have call predecessors, (3568), 621 states have return successors, (3576), 3537 states have call predecessors, (3576), 3560 states have call successors, (3576) [2022-11-02 20:40:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17838 states to 17838 states and 26755 transitions. [2022-11-02 20:40:10,118 INFO L78 Accepts]: Start accepts. Automaton has 17838 states and 26755 transitions. Word has length 85 [2022-11-02 20:40:10,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:10,119 INFO L495 AbstractCegarLoop]: Abstraction has 17838 states and 26755 transitions. [2022-11-02 20:40:10,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 20:40:10,119 INFO L276 IsEmpty]: Start isEmpty. Operand 17838 states and 26755 transitions. [2022-11-02 20:40:10,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-02 20:40:10,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:10,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:10,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:40:10,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:10,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:10,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1150720298, now seen corresponding path program 1 times [2022-11-02 20:40:10,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:10,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525508969] [2022-11-02 20:40:10,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:10,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:40:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:40:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:40:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:40:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:40:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:40:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:40:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:40:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:40:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:40:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 20:40:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:40:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:40:10,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:10,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525508969] [2022-11-02 20:40:10,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525508969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:10,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:10,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:40:10,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003115576] [2022-11-02 20:40:10,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:10,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:40:10,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:10,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:40:10,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:40:10,675 INFO L87 Difference]: Start difference. First operand 17838 states and 26755 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:40:27,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:27,536 INFO L93 Difference]: Finished difference Result 19222 states and 29224 transitions. [2022-11-02 20:40:27,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:27,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2022-11-02 20:40:27,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:27,658 INFO L225 Difference]: With dead ends: 19222 [2022-11-02 20:40:27,658 INFO L226 Difference]: Without dead ends: 19219 [2022-11-02 20:40:27,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:40:27,677 INFO L413 NwaCegarLoop]: 5431 mSDtfsCounter, 5722 mSDsluCounter, 3497 mSDsCounter, 0 mSdLazyCounter, 6143 mSolverCounterSat, 2926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6058 SdHoareTripleChecker+Valid, 8928 SdHoareTripleChecker+Invalid, 9069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2926 IncrementalHoareTripleChecker+Valid, 6143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:27,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6058 Valid, 8928 Invalid, 9069 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2926 Valid, 6143 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2022-11-02 20:40:27,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19219 states. [2022-11-02 20:40:29,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19219 to 17837. [2022-11-02 20:40:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17837 states, 13648 states have (on average 1.4366207502930832) internal successors, (19607), 13751 states have internal predecessors, (19607), 3567 states have call successors, (3567), 623 states have call predecessors, (3567), 621 states have return successors, (3576), 3537 states have call predecessors, (3576), 3560 states have call successors, (3576) [2022-11-02 20:40:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17837 states to 17837 states and 26750 transitions. [2022-11-02 20:40:29,204 INFO L78 Accepts]: Start accepts. Automaton has 17837 states and 26750 transitions. Word has length 87 [2022-11-02 20:40:29,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:29,205 INFO L495 AbstractCegarLoop]: Abstraction has 17837 states and 26750 transitions. [2022-11-02 20:40:29,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:40:29,206 INFO L276 IsEmpty]: Start isEmpty. Operand 17837 states and 26750 transitions. [2022-11-02 20:40:29,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:40:29,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:29,225 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:29,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:40:29,226 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:29,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:29,227 INFO L85 PathProgramCache]: Analyzing trace with hash 382315852, now seen corresponding path program 1 times [2022-11-02 20:40:29,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:29,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824670899] [2022-11-02 20:40:29,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:29,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:40:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:40:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:40:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:40:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:40:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:40:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 20:40:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 20:40:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 20:40:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:40:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 20:40:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 20:40:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:40:29,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:29,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824670899] [2022-11-02 20:40:29,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824670899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:29,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:29,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:40:29,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903072994] [2022-11-02 20:40:29,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:29,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:40:29,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:29,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:40:29,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:29,718 INFO L87 Difference]: Start difference. First operand 17837 states and 26750 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:40:53,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:53,171 INFO L93 Difference]: Finished difference Result 36997 states and 55899 transitions. [2022-11-02 20:40:53,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:40:53,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2022-11-02 20:40:53,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:53,306 INFO L225 Difference]: With dead ends: 36997 [2022-11-02 20:40:53,306 INFO L226 Difference]: Without dead ends: 19215 [2022-11-02 20:40:53,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:40:53,399 INFO L413 NwaCegarLoop]: 6990 mSDtfsCounter, 9007 mSDsluCounter, 7701 mSDsCounter, 0 mSdLazyCounter, 8669 mSolverCounterSat, 5218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9240 SdHoareTripleChecker+Valid, 14691 SdHoareTripleChecker+Invalid, 13887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5218 IncrementalHoareTripleChecker+Valid, 8669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:53,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9240 Valid, 14691 Invalid, 13887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5218 Valid, 8669 Invalid, 0 Unknown, 0 Unchecked, 21.3s Time] [2022-11-02 20:40:53,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19215 states. [2022-11-02 20:40:54,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19215 to 17793. [2022-11-02 20:40:54,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17793 states, 13624 states have (on average 1.4368027011156783) internal successors, (19575), 13728 states have internal predecessors, (19575), 3549 states have call successors, (3549), 618 states have call predecessors, (3549), 619 states have return successors, (3547), 3521 states have call predecessors, (3547), 3539 states have call successors, (3547) [2022-11-02 20:40:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17793 states to 17793 states and 26671 transitions. [2022-11-02 20:40:55,008 INFO L78 Accepts]: Start accepts. Automaton has 17793 states and 26671 transitions. Word has length 98 [2022-11-02 20:40:55,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:55,009 INFO L495 AbstractCegarLoop]: Abstraction has 17793 states and 26671 transitions. [2022-11-02 20:40:55,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:40:55,010 INFO L276 IsEmpty]: Start isEmpty. Operand 17793 states and 26671 transitions. [2022-11-02 20:40:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:40:55,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:55,014 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:55,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:40:55,015 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:55,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:55,015 INFO L85 PathProgramCache]: Analyzing trace with hash -26508373, now seen corresponding path program 1 times [2022-11-02 20:40:55,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:55,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710565462] [2022-11-02 20:40:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:55,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:40:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:40:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:40:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:40:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:40:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:40:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 20:40:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 20:40:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 20:40:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:40:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 20:40:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 20:40:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:56,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:40:56,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:56,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710565462] [2022-11-02 20:40:56,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710565462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:56,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:56,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:40:56,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165254994] [2022-11-02 20:40:56,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:56,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:40:56,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:56,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:40:56,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:40:56,141 INFO L87 Difference]: Start difference. First operand 17793 states and 26671 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:41:22,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:22,717 INFO L93 Difference]: Finished difference Result 24313 states and 37169 transitions. [2022-11-02 20:41:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:41:22,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2022-11-02 20:41:22,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:22,814 INFO L225 Difference]: With dead ends: 24313 [2022-11-02 20:41:22,815 INFO L226 Difference]: Without dead ends: 20746 [2022-11-02 20:41:22,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:41:22,844 INFO L413 NwaCegarLoop]: 5432 mSDtfsCounter, 6754 mSDsluCounter, 15892 mSDsCounter, 0 mSdLazyCounter, 15690 mSolverCounterSat, 3355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6757 SdHoareTripleChecker+Valid, 21324 SdHoareTripleChecker+Invalid, 19045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3355 IncrementalHoareTripleChecker+Valid, 15690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:22,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6757 Valid, 21324 Invalid, 19045 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3355 Valid, 15690 Invalid, 0 Unknown, 0 Unchecked, 24.5s Time] [2022-11-02 20:41:22,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20746 states. [2022-11-02 20:41:24,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20746 to 15759. [2022-11-02 20:41:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15759 states, 11998 states have (on average 1.4259876646107685) internal successors, (17109), 12094 states have internal predecessors, (17109), 3183 states have call successors, (3183), 576 states have call predecessors, (3183), 577 states have return successors, (3183), 3161 states have call predecessors, (3183), 3175 states have call successors, (3183) [2022-11-02 20:41:24,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15759 states to 15759 states and 23475 transitions. [2022-11-02 20:41:24,271 INFO L78 Accepts]: Start accepts. Automaton has 15759 states and 23475 transitions. Word has length 98 [2022-11-02 20:41:24,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:24,272 INFO L495 AbstractCegarLoop]: Abstraction has 15759 states and 23475 transitions. [2022-11-02 20:41:24,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:41:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 15759 states and 23475 transitions. [2022-11-02 20:41:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-02 20:41:24,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:24,281 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:24,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:41:24,281 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:24,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:24,282 INFO L85 PathProgramCache]: Analyzing trace with hash -58972263, now seen corresponding path program 1 times [2022-11-02 20:41:24,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:24,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710156692] [2022-11-02 20:41:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:24,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:41:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:41:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:41:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:41:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:41:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:41:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 20:41:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 20:41:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 20:41:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:41:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 20:41:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 20:41:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-02 20:41:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 20:41:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 20:41:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:41:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:41:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:41:24,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:24,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710156692] [2022-11-02 20:41:24,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710156692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:24,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:24,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:41:24,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943262466] [2022-11-02 20:41:24,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:24,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:41:24,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:24,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:41:24,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:41:24,918 INFO L87 Difference]: Start difference. First operand 15759 states and 23475 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17)