./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro --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 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:59:53,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:59:53,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:59:53,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:59:53,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:59:53,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:59:53,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:59:53,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:59:53,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:59:53,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:59:53,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:59:53,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:59:53,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:59:53,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:59:53,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:59:53,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:59:53,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:59:53,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:59:53,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:59:53,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:59:53,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:59:53,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:59:53,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:59:53,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:59:54,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:59:54,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:59:54,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:59:54,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:59:54,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:59:54,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:59:54,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:59:54,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:59:54,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:59:54,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:59:54,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:59:54,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:59:54,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:59:54,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:59:54,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:59:54,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:59:54,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:59:54,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 19:59:54,038 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:59:54,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:59:54,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:59:54,039 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:59:54,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:59:54,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:59:54,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:59:54,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:59:54,055 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:59:54,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:59:54,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:59:54,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:59:54,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:59:54,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:59:54,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:59:54,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:59:54,057 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:59:54,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:59:54,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:59:54,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:59:54,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:59:54,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:59:54,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:59:54,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:59:54,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:59:54,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:59:54,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:59:54,059 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:59:54,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:59:54,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:59:54,060 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_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2022-11-18 19:59:54,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:59:54,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:59:54,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:59:54,360 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:59:54,361 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:59:54,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2022-11-18 19:59:54,434 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/data/32dbc9bc1/cb87b5677dc14176b8afaa1875830d96/FLAGddea7ec77 [2022-11-18 19:59:55,159 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:59:55,160 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2022-11-18 19:59:55,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/data/32dbc9bc1/cb87b5677dc14176b8afaa1875830d96/FLAGddea7ec77 [2022-11-18 19:59:55,412 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/data/32dbc9bc1/cb87b5677dc14176b8afaa1875830d96 [2022-11-18 19:59:55,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:59:55,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:59:55,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:59:55,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:59:55,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:59:55,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:59:55" (1/1) ... [2022-11-18 19:59:55,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba1c84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:55, skipping insertion in model container [2022-11-18 19:59:55,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:59:55" (1/1) ... [2022-11-18 19:59:55,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:59:55,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:59:56,438 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2022-11-18 19:59:56,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:59:56,604 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:59:56,780 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2022-11-18 19:59:56,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:59:56,952 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:59:56,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:56 WrapperNode [2022-11-18 19:59:56,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:59:56,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:59:56,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:59:56,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:59:56,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:56" (1/1) ... [2022-11-18 19:59:57,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:56" (1/1) ... [2022-11-18 19:59:57,355 INFO L138 Inliner]: procedures = 133, calls = 5551, calls flagged for inlining = 57, calls inlined = 51, statements flattened = 6626 [2022-11-18 19:59:57,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:59:57,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:59:57,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:59:57,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:59:57,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:56" (1/1) ... [2022-11-18 19:59:57,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:56" (1/1) ... [2022-11-18 19:59:57,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:56" (1/1) ... [2022-11-18 19:59:57,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:56" (1/1) ... [2022-11-18 19:59:57,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:56" (1/1) ... [2022-11-18 19:59:57,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:56" (1/1) ... [2022-11-18 19:59:57,702 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:56" (1/1) ... [2022-11-18 19:59:57,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:56" (1/1) ... [2022-11-18 19:59:57,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:59:57,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:59:57,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:59:57,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:59:57,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:56" (1/1) ... [2022-11-18 19:59:57,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:59:57,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:57,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:59:57,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:59:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2022-11-18 19:59:57,856 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2022-11-18 19:59:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-18 19:59:57,857 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-18 19:59:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2022-11-18 19:59:57,858 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2022-11-18 19:59:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-18 19:59:57,858 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-18 19:59:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-11-18 19:59:57,859 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-11-18 19:59:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2022-11-18 19:59:57,859 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2022-11-18 19:59:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:59:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2022-11-18 19:59:57,859 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2022-11-18 19:59:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 19:59:57,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 19:59:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:59:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-18 19:59:57,860 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-18 19:59:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-18 19:59:57,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-18 19:59:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-18 19:59:57,861 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-18 19:59:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-11-18 19:59:57,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-11-18 19:59:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2022-11-18 19:59:57,862 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2022-11-18 19:59:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2022-11-18 19:59:57,862 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2022-11-18 19:59:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:59:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-11-18 19:59:57,863 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-11-18 19:59:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-18 19:59:57,863 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-18 19:59:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:59:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:59:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:59:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2022-11-18 19:59:57,864 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2022-11-18 19:59:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:59:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:59:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2022-11-18 19:59:57,865 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2022-11-18 19:59:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:59:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-11-18 19:59:57,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-11-18 19:59:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2022-11-18 19:59:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-18 19:59:57,866 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-18 19:59:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-18 19:59:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-18 19:59:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:59:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-18 19:59:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-18 19:59:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:59:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:59:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2022-11-18 19:59:57,869 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2022-11-18 19:59:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-18 19:59:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-18 19:59:58,278 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:59:58,280 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:00:12,603 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:00:12,617 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:00:12,618 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:00:12,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:00:12 BoogieIcfgContainer [2022-11-18 20:00:12,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:00:12,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:00:12,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:00:12,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:00:12,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:59:55" (1/3) ... [2022-11-18 20:00:12,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45681e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:00:12, skipping insertion in model container [2022-11-18 20:00:12,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:56" (2/3) ... [2022-11-18 20:00:12,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45681e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:00:12, skipping insertion in model container [2022-11-18 20:00:12,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:00:12" (3/3) ... [2022-11-18 20:00:12,629 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2022-11-18 20:00:12,650 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:00:12,650 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:00:12,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:00:12,750 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;@1bcdf15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:00:12,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:00:12,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 499 states, 395 states have (on average 1.4329113924050634) internal successors, (566), 404 states have internal predecessors, (566), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-18 20:00:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:00:12,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:12,779 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] [2022-11-18 20:00:12,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:12,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:12,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1860140379, now seen corresponding path program 1 times [2022-11-18 20:00:12,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:12,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037403387] [2022-11-18 20:00:12,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:12,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:14,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:00:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:14,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:14,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037403387] [2022-11-18 20:00:14,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037403387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:14,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:14,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:00:14,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740048357] [2022-11-18 20:00:14,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:14,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:00:14,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:14,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:00:14,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:00:14,878 INFO L87 Difference]: Start difference. First operand has 499 states, 395 states have (on average 1.4329113924050634) internal successors, (566), 404 states have internal predecessors, (566), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:00:15,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:15,557 INFO L93 Difference]: Finished difference Result 1407 states and 2087 transitions. [2022-11-18 20:00:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:00:15,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-18 20:00:15,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:15,589 INFO L225 Difference]: With dead ends: 1407 [2022-11-18 20:00:15,590 INFO L226 Difference]: Without dead ends: 907 [2022-11-18 20:00:15,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:00:15,603 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 682 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:15,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1642 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:00:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-11-18 20:00:15,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 903. [2022-11-18 20:00:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 714 states have (on average 1.4341736694677871) internal successors, (1024), 724 states have internal predecessors, (1024), 143 states have call successors, (143), 46 states have call predecessors, (143), 45 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) [2022-11-18 20:00:15,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1305 transitions. [2022-11-18 20:00:15,742 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1305 transitions. Word has length 21 [2022-11-18 20:00:15,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:15,743 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1305 transitions. [2022-11-18 20:00:15,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:00:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1305 transitions. [2022-11-18 20:00:15,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:00:15,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:15,747 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] [2022-11-18 20:00:15,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:00:15,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:15,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:15,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1341252181, now seen corresponding path program 1 times [2022-11-18 20:00:15,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:15,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263679337] [2022-11-18 20:00:15,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:15,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:00:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:16,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:16,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263679337] [2022-11-18 20:00:16,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263679337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:16,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:16,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:00:16,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131118153] [2022-11-18 20:00:16,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:16,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:00:16,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:16,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:00:16,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:00:16,811 INFO L87 Difference]: Start difference. First operand 903 states and 1305 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:00:18,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:18,955 INFO L93 Difference]: Finished difference Result 2674 states and 3857 transitions. [2022-11-18 20:00:18,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:00:18,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-11-18 20:00:18,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:18,969 INFO L225 Difference]: With dead ends: 2674 [2022-11-18 20:00:18,969 INFO L226 Difference]: Without dead ends: 1774 [2022-11-18 20:00:18,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:00:18,975 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 729 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:18,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1474 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 20:00:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2022-11-18 20:00:19,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1577. [2022-11-18 20:00:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1235 states have (on average 1.4008097165991902) internal successors, (1730), 1251 states have internal predecessors, (1730), 256 states have call successors, (256), 86 states have call predecessors, (256), 85 states have return successors, (251), 251 states have call predecessors, (251), 251 states have call successors, (251) [2022-11-18 20:00:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2237 transitions. [2022-11-18 20:00:19,083 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2237 transitions. Word has length 28 [2022-11-18 20:00:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:19,084 INFO L495 AbstractCegarLoop]: Abstraction has 1577 states and 2237 transitions. [2022-11-18 20:00:19,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:00:19,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2237 transitions. [2022-11-18 20:00:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 20:00:19,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:19,086 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] [2022-11-18 20:00:19,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:00:19,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:19,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:19,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1231327051, now seen corresponding path program 1 times [2022-11-18 20:00:19,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:19,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956237127] [2022-11-18 20:00:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:19,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:21,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:00:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:21,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:21,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:21,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956237127] [2022-11-18 20:00:21,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956237127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:21,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:21,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:00:21,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191300518] [2022-11-18 20:00:21,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:21,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:00:21,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:21,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:00:21,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:00:21,232 INFO L87 Difference]: Start difference. First operand 1577 states and 2237 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:00:25,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:25,047 INFO L93 Difference]: Finished difference Result 5284 states and 7954 transitions. [2022-11-18 20:00:25,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:00:25,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-11-18 20:00:25,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:25,070 INFO L225 Difference]: With dead ends: 5284 [2022-11-18 20:00:25,070 INFO L226 Difference]: Without dead ends: 3710 [2022-11-18 20:00:25,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:00:25,086 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 1676 mSDsluCounter, 4699 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 5938 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:25,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 5938 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-18 20:00:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2022-11-18 20:00:25,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 1599. [2022-11-18 20:00:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1253 states have (on average 1.3998403830806065) internal successors, (1754), 1269 states have internal predecessors, (1754), 260 states have call successors, (260), 86 states have call predecessors, (260), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2022-11-18 20:00:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2269 transitions. [2022-11-18 20:00:25,260 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2269 transitions. Word has length 33 [2022-11-18 20:00:25,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:25,260 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2269 transitions. [2022-11-18 20:00:25,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:00:25,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2269 transitions. [2022-11-18 20:00:25,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 20:00:25,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:25,265 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] [2022-11-18 20:00:25,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:00:25,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:25,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:25,267 INFO L85 PathProgramCache]: Analyzing trace with hash -574111283, now seen corresponding path program 1 times [2022-11-18 20:00:25,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:25,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230220264] [2022-11-18 20:00:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:25,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:00:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:26,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:26,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:26,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230220264] [2022-11-18 20:00:26,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230220264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:26,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:26,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:00:26,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114808644] [2022-11-18 20:00:26,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:26,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:00:26,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:26,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:00:26,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:00:26,247 INFO L87 Difference]: Start difference. First operand 1599 states and 2269 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:00:27,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:27,434 INFO L93 Difference]: Finished difference Result 1779 states and 2570 transitions. [2022-11-18 20:00:27,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:00:27,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-11-18 20:00:27,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:27,445 INFO L225 Difference]: With dead ends: 1779 [2022-11-18 20:00:27,445 INFO L226 Difference]: Without dead ends: 1776 [2022-11-18 20:00:27,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:00:27,448 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 819 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:27,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 915 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:00:27,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2022-11-18 20:00:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1598. [2022-11-18 20:00:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1253 states have (on average 1.3990422984836393) internal successors, (1753), 1268 states have internal predecessors, (1753), 259 states have call successors, (259), 86 states have call predecessors, (259), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2022-11-18 20:00:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2267 transitions. [2022-11-18 20:00:27,555 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2267 transitions. Word has length 33 [2022-11-18 20:00:27,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:27,556 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2267 transitions. [2022-11-18 20:00:27,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:00:27,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2267 transitions. [2022-11-18 20:00:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 20:00:27,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:27,558 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] [2022-11-18 20:00:27,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:00:27,558 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:27,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:27,559 INFO L85 PathProgramCache]: Analyzing trace with hash -617764655, now seen corresponding path program 1 times [2022-11-18 20:00:27,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:27,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583321060] [2022-11-18 20:00:27,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:27,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:28,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:00:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:28,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:28,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:28,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583321060] [2022-11-18 20:00:28,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583321060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:28,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:28,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:00:28,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370395108] [2022-11-18 20:00:28,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:28,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:00:28,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:28,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:00:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:00:28,333 INFO L87 Difference]: Start difference. First operand 1598 states and 2267 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:00:29,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:29,568 INFO L93 Difference]: Finished difference Result 1778 states and 2568 transitions. [2022-11-18 20:00:29,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:00:29,569 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-11-18 20:00:29,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:29,582 INFO L225 Difference]: With dead ends: 1778 [2022-11-18 20:00:29,582 INFO L226 Difference]: Without dead ends: 1775 [2022-11-18 20:00:29,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:00:29,585 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 816 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:29,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 912 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:00:29,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2022-11-18 20:00:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1597. [2022-11-18 20:00:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1253 states have (on average 1.398244213886672) internal successors, (1752), 1267 states have internal predecessors, (1752), 258 states have call successors, (258), 86 states have call predecessors, (258), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2022-11-18 20:00:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2265 transitions. [2022-11-18 20:00:29,712 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2265 transitions. Word has length 34 [2022-11-18 20:00:29,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:29,712 INFO L495 AbstractCegarLoop]: Abstraction has 1597 states and 2265 transitions. [2022-11-18 20:00:29,713 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:00:29,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2265 transitions. [2022-11-18 20:00:29,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 20:00:29,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:29,714 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] [2022-11-18 20:00:29,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:00:29,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:29,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:29,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1971014320, now seen corresponding path program 1 times [2022-11-18 20:00:29,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:29,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684402162] [2022-11-18 20:00:29,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:29,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:30,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:00:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:30,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:30,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:30,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684402162] [2022-11-18 20:00:30,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684402162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:30,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:30,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:00:30,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153947567] [2022-11-18 20:00:30,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:30,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:00:30,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:30,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:00:30,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:00:30,522 INFO L87 Difference]: Start difference. First operand 1597 states and 2265 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:00:32,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:32,510 INFO L93 Difference]: Finished difference Result 4611 states and 6639 transitions. [2022-11-18 20:00:32,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:00:32,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2022-11-18 20:00:32,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:32,531 INFO L225 Difference]: With dead ends: 4611 [2022-11-18 20:00:32,531 INFO L226 Difference]: Without dead ends: 3005 [2022-11-18 20:00:32,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:00:32,542 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 925 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:32,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 1370 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 20:00:32,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2022-11-18 20:00:32,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2778. [2022-11-18 20:00:32,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2185 states have (on average 1.3977116704805492) internal successors, (3054), 2222 states have internal predecessors, (3054), 455 states have call successors, (455), 151 states have call predecessors, (455), 137 states have return successors, (445), 428 states have call predecessors, (445), 445 states have call successors, (445) [2022-11-18 20:00:32,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3954 transitions. [2022-11-18 20:00:32,766 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3954 transitions. Word has length 35 [2022-11-18 20:00:32,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:32,767 INFO L495 AbstractCegarLoop]: Abstraction has 2778 states and 3954 transitions. [2022-11-18 20:00:32,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:00:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3954 transitions. [2022-11-18 20:00:32,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:00:32,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:32,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:32,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:00:32,773 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:32,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:32,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2101219672, now seen corresponding path program 1 times [2022-11-18 20:00:32,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:32,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363422409] [2022-11-18 20:00:32,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:32,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:33,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:00:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:33,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:33,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:00:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:33,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:00:33,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:33,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363422409] [2022-11-18 20:00:33,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363422409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:33,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:33,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:00:33,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156771841] [2022-11-18 20:00:33,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:33,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:00:33,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:33,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:00:33,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:00:33,684 INFO L87 Difference]: Start difference. First operand 2778 states and 3954 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:00:35,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:35,876 INFO L93 Difference]: Finished difference Result 7242 states and 10447 transitions. [2022-11-18 20:00:35,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:00:35,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2022-11-18 20:00:35,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:35,906 INFO L225 Difference]: With dead ends: 7242 [2022-11-18 20:00:35,907 INFO L226 Difference]: Without dead ends: 4467 [2022-11-18 20:00:35,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:00:35,922 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 875 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:35,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 1697 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 20:00:35,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2022-11-18 20:00:36,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4138. [2022-11-18 20:00:36,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 3275 states have (on average 1.3880916030534352) internal successors, (4546), 3324 states have internal predecessors, (4546), 659 states have call successors, (659), 221 states have call predecessors, (659), 203 states have return successors, (649), 628 states have call predecessors, (649), 649 states have call successors, (649) [2022-11-18 20:00:36,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 5854 transitions. [2022-11-18 20:00:36,204 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 5854 transitions. Word has length 55 [2022-11-18 20:00:36,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:36,205 INFO L495 AbstractCegarLoop]: Abstraction has 4138 states and 5854 transitions. [2022-11-18 20:00:36,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:00:36,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 5854 transitions. [2022-11-18 20:00:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-18 20:00:36,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:36,215 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:36,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:00:36,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:36,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:36,216 INFO L85 PathProgramCache]: Analyzing trace with hash 196374771, now seen corresponding path program 1 times [2022-11-18 20:00:36,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:36,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313089298] [2022-11-18 20:00:36,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:36,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:37,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:00:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:37,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:37,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:00:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:37,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:37,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:00:37,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:37,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313089298] [2022-11-18 20:00:37,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313089298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:37,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:37,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:00:37,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396549166] [2022-11-18 20:00:37,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:37,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:00:37,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:37,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:00:37,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:00:37,207 INFO L87 Difference]: Start difference. First operand 4138 states and 5854 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:00:39,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:39,486 INFO L93 Difference]: Finished difference Result 10056 states and 14407 transitions. [2022-11-18 20:00:39,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:00:39,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2022-11-18 20:00:39,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:39,520 INFO L225 Difference]: With dead ends: 10056 [2022-11-18 20:00:39,520 INFO L226 Difference]: Without dead ends: 5921 [2022-11-18 20:00:39,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:00:39,535 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 792 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:39,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1976 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 20:00:39,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5921 states. [2022-11-18 20:00:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5921 to 5498. [2022-11-18 20:00:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5498 states, 4365 states have (on average 1.3832760595647193) internal successors, (6038), 4426 states have internal predecessors, (6038), 863 states have call successors, (863), 291 states have call predecessors, (863), 269 states have return successors, (853), 828 states have call predecessors, (853), 853 states have call successors, (853) [2022-11-18 20:00:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5498 states to 5498 states and 7754 transitions. [2022-11-18 20:00:39,959 INFO L78 Accepts]: Start accepts. Automaton has 5498 states and 7754 transitions. Word has length 75 [2022-11-18 20:00:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:39,959 INFO L495 AbstractCegarLoop]: Abstraction has 5498 states and 7754 transitions. [2022-11-18 20:00:39,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:00:39,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5498 states and 7754 transitions. [2022-11-18 20:00:39,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 20:00:39,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:39,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:39,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:00:39,963 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:39,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:39,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1785936298, now seen corresponding path program 1 times [2022-11-18 20:00:39,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:39,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998663120] [2022-11-18 20:00:39,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:39,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:00:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:00:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:00:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:00:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:00:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:00:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:00:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:00:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:00:40,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:40,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998663120] [2022-11-18 20:00:40,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998663120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:40,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:40,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:00:40,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387905085] [2022-11-18 20:00:40,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:40,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:00:40,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:40,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:00:40,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:00:40,730 INFO L87 Difference]: Start difference. First operand 5498 states and 7754 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:00:44,470 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 [] [2022-11-18 20:00:45,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:45,622 INFO L93 Difference]: Finished difference Result 13582 states and 19486 transitions. [2022-11-18 20:00:45,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:00:45,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-11-18 20:00:45,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:45,670 INFO L225 Difference]: With dead ends: 13582 [2022-11-18 20:00:45,671 INFO L226 Difference]: Without dead ends: 8087 [2022-11-18 20:00:45,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:00:45,693 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 1076 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 541 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:45,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 2086 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 930 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-18 20:00:45,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8087 states. [2022-11-18 20:00:46,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8087 to 7208. [2022-11-18 20:00:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7208 states, 5881 states have (on average 1.4057133140622342) internal successors, (8267), 5952 states have internal predecessors, (8267), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2022-11-18 20:00:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 10229 transitions. [2022-11-18 20:00:46,205 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 10229 transitions. Word has length 92 [2022-11-18 20:00:46,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:46,205 INFO L495 AbstractCegarLoop]: Abstraction has 7208 states and 10229 transitions. [2022-11-18 20:00:46,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:00:46,206 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 10229 transitions. [2022-11-18 20:00:46,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-18 20:00:46,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:46,219 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:46,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:00:46,219 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2081938916, now seen corresponding path program 1 times [2022-11-18 20:00:46,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:46,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26697156] [2022-11-18 20:00:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:46,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:47,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:00:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:47,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:47,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:00:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:47,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:47,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:00:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:47,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:00:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:47,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:00:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:00:47,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:47,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26697156] [2022-11-18 20:00:47,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26697156] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:00:47,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611923993] [2022-11-18 20:00:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:47,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:00:47,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:00:47,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:00:47,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:00:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:50,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 13345 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:00:50,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:00:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:00:50,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:00:50,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611923993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:50,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:00:50,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-11-18 20:00:50,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639619537] [2022-11-18 20:00:50,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:50,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:00:50,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:50,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:00:50,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:00:50,259 INFO L87 Difference]: Start difference. First operand 7208 states and 10229 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:00:52,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:52,437 INFO L93 Difference]: Finished difference Result 18050 states and 26050 transitions. [2022-11-18 20:00:52,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:00:52,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 107 [2022-11-18 20:00:52,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:52,496 INFO L225 Difference]: With dead ends: 18050 [2022-11-18 20:00:52,496 INFO L226 Difference]: Without dead ends: 10805 [2022-11-18 20:00:52,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:00:52,520 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 717 mSDsluCounter, 5279 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:52,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 6254 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:00:52,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2022-11-18 20:00:52,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 7213. [2022-11-18 20:00:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7213 states, 5886 states have (on average 1.401291199456337) internal successors, (8248), 5957 states have internal predecessors, (8248), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2022-11-18 20:00:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7213 states to 7213 states and 10210 transitions. [2022-11-18 20:00:53,037 INFO L78 Accepts]: Start accepts. Automaton has 7213 states and 10210 transitions. Word has length 107 [2022-11-18 20:00:53,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:53,038 INFO L495 AbstractCegarLoop]: Abstraction has 7213 states and 10210 transitions. [2022-11-18 20:00:53,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:00:53,038 INFO L276 IsEmpty]: Start isEmpty. Operand 7213 states and 10210 transitions. [2022-11-18 20:00:53,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-18 20:00:53,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:53,046 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:53,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:00:53,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:00:53,275 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:53,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:53,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1609003934, now seen corresponding path program 1 times [2022-11-18 20:00:53,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:53,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427048380] [2022-11-18 20:00:53,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:53,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:54,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:00:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:54,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:54,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:00:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:54,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:00:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:54,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:54,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:54,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:00:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:54,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:00:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:54,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:00:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 20:00:54,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:54,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427048380] [2022-11-18 20:00:54,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427048380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:54,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:54,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:00:54,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863416711] [2022-11-18 20:00:54,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:54,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:00:54,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:00:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:00:54,979 INFO L87 Difference]: Start difference. First operand 7213 states and 10210 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:00:58,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:58,924 INFO L93 Difference]: Finished difference Result 23671 states and 35308 transitions. [2022-11-18 20:00:58,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:00:58,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 133 [2022-11-18 20:00:58,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:58,994 INFO L225 Difference]: With dead ends: 23671 [2022-11-18 20:00:58,994 INFO L226 Difference]: Without dead ends: 16461 [2022-11-18 20:00:59,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:00:59,020 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 1446 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 3559 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:59,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 3559 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 20:00:59,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16461 states. [2022-11-18 20:00:59,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16461 to 7189. [2022-11-18 20:00:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7189 states, 5862 states have (on average 1.3974752644148756) internal successors, (8192), 5933 states have internal predecessors, (8192), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2022-11-18 20:00:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 10154 transitions. [2022-11-18 20:00:59,859 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 10154 transitions. Word has length 133 [2022-11-18 20:00:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:59,859 INFO L495 AbstractCegarLoop]: Abstraction has 7189 states and 10154 transitions. [2022-11-18 20:00:59,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:00:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 10154 transitions. [2022-11-18 20:00:59,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 20:00:59,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:59,867 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:59,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:00:59,867 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:59,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:59,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1603001176, now seen corresponding path program 1 times [2022-11-18 20:00:59,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:59,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710007816] [2022-11-18 20:00:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:59,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:01:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:01:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:01:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:01:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-18 20:01:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,130 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:01:01,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:01,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710007816] [2022-11-18 20:01:01,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710007816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:01,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:01,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:01:01,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098084559] [2022-11-18 20:01:01,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:01,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:01:01,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:01,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:01:01,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:01:01,133 INFO L87 Difference]: Start difference. First operand 7189 states and 10154 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:01:05,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:05,059 INFO L93 Difference]: Finished difference Result 24324 states and 36225 transitions. [2022-11-18 20:01:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:01:05,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 135 [2022-11-18 20:01:05,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:05,125 INFO L225 Difference]: With dead ends: 24324 [2022-11-18 20:01:05,126 INFO L226 Difference]: Without dead ends: 17138 [2022-11-18 20:01:05,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:05,148 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 859 mSDsluCounter, 5421 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 6941 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:05,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 6941 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 20:01:05,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17138 states. [2022-11-18 20:01:05,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17138 to 7205. [2022-11-18 20:01:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7205 states, 5878 states have (on average 1.396393331064988) internal successors, (8208), 5949 states have internal predecessors, (8208), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2022-11-18 20:01:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7205 states to 7205 states and 10170 transitions. [2022-11-18 20:01:05,957 INFO L78 Accepts]: Start accepts. Automaton has 7205 states and 10170 transitions. Word has length 135 [2022-11-18 20:01:05,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:05,958 INFO L495 AbstractCegarLoop]: Abstraction has 7205 states and 10170 transitions. [2022-11-18 20:01:05,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:01:05,958 INFO L276 IsEmpty]: Start isEmpty. Operand 7205 states and 10170 transitions. [2022-11-18 20:01:05,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-18 20:01:05,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:05,964 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:05,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:01:05,965 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:05,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:05,965 INFO L85 PathProgramCache]: Analyzing trace with hash 250270820, now seen corresponding path program 1 times [2022-11-18 20:01:05,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:05,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602333837] [2022-11-18 20:01:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:05,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:01:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:01:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:01:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:01:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:01:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 20:01:06,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:06,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602333837] [2022-11-18 20:01:06,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602333837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:06,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:06,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:01:06,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371915605] [2022-11-18 20:01:06,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:06,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:06,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:06,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:06,970 INFO L87 Difference]: Start difference. First operand 7205 states and 10170 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:01:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:10,531 INFO L93 Difference]: Finished difference Result 16785 states and 23996 transitions. [2022-11-18 20:01:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:01:10,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 146 [2022-11-18 20:01:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:10,572 INFO L225 Difference]: With dead ends: 16785 [2022-11-18 20:01:10,572 INFO L226 Difference]: Without dead ends: 9583 [2022-11-18 20:01:10,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:01:10,593 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 1099 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:10,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 2601 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 20:01:10,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2022-11-18 20:01:11,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 8951. [2022-11-18 20:01:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8951 states, 7326 states have (on average 1.3928473928473928) internal successors, (10204), 7409 states have internal predecessors, (10204), 1211 states have call successors, (1211), 445 states have call predecessors, (1211), 413 states have return successors, (1195), 1156 states have call predecessors, (1195), 1195 states have call successors, (1195) [2022-11-18 20:01:11,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 12610 transitions. [2022-11-18 20:01:11,247 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 12610 transitions. Word has length 146 [2022-11-18 20:01:11,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:11,247 INFO L495 AbstractCegarLoop]: Abstraction has 8951 states and 12610 transitions. [2022-11-18 20:01:11,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:01:11,248 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 12610 transitions. [2022-11-18 20:01:11,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-18 20:01:11,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:11,258 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:11,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:01:11,258 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1836876500, now seen corresponding path program 1 times [2022-11-18 20:01:11,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:11,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306733143] [2022-11-18 20:01:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:11,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:01:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:01:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:01:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:01:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-18 20:01:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 20:01:12,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:12,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306733143] [2022-11-18 20:01:12,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306733143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:12,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:12,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:01:12,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214625374] [2022-11-18 20:01:12,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:12,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:12,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:12,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:12,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:12,391 INFO L87 Difference]: Start difference. First operand 8951 states and 12610 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:01:15,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:15,847 INFO L93 Difference]: Finished difference Result 20381 states and 29052 transitions. [2022-11-18 20:01:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:01:15,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 151 [2022-11-18 20:01:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:15,895 INFO L225 Difference]: With dead ends: 20381 [2022-11-18 20:01:15,895 INFO L226 Difference]: Without dead ends: 11433 [2022-11-18 20:01:15,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:01:15,925 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1078 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:15,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 2666 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 20:01:15,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11433 states. [2022-11-18 20:01:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11433 to 10697. [2022-11-18 20:01:16,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10697 states, 8774 states have (on average 1.39047184864372) internal successors, (12200), 8869 states have internal predecessors, (12200), 1433 states have call successors, (1433), 525 states have call predecessors, (1433), 489 states have return successors, (1417), 1374 states have call predecessors, (1417), 1417 states have call successors, (1417) [2022-11-18 20:01:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10697 states to 10697 states and 15050 transitions. [2022-11-18 20:01:16,890 INFO L78 Accepts]: Start accepts. Automaton has 10697 states and 15050 transitions. Word has length 151 [2022-11-18 20:01:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:16,891 INFO L495 AbstractCegarLoop]: Abstraction has 10697 states and 15050 transitions. [2022-11-18 20:01:16,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:01:16,891 INFO L276 IsEmpty]: Start isEmpty. Operand 10697 states and 15050 transitions. [2022-11-18 20:01:16,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-18 20:01:16,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:16,901 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:16,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:01:16,901 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:16,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:16,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1184700533, now seen corresponding path program 1 times [2022-11-18 20:01:16,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:16,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916707233] [2022-11-18 20:01:16,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:16,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:18,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:18,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:18,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:01:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:18,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:18,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:01:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:18,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:18,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:18,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:01:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-18 20:01:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:01:18,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:18,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916707233] [2022-11-18 20:01:18,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916707233] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:01:18,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363278755] [2022-11-18 20:01:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:18,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:18,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:18,297 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:18,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:01:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:20,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 13478 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:01:20,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:01:21,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:21,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363278755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:21,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:01:21,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2022-11-18 20:01:21,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721083557] [2022-11-18 20:01:21,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:21,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:21,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:21,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:21,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:21,286 INFO L87 Difference]: Start difference. First operand 10697 states and 15050 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 20:01:23,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:23,876 INFO L93 Difference]: Finished difference Result 32084 states and 45142 transitions. [2022-11-18 20:01:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:01:23,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 139 [2022-11-18 20:01:23,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:23,994 INFO L225 Difference]: With dead ends: 32084 [2022-11-18 20:01:23,994 INFO L226 Difference]: Without dead ends: 32069 [2022-11-18 20:01:24,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:24,011 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 1299 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:24,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 2759 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:01:24,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32069 states. [2022-11-18 20:01:26,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32069 to 31933. [2022-11-18 20:01:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31933 states, 26196 states have (on average 1.3918155443579172) internal successors, (36460), 26473 states have internal predecessors, (36460), 4277 states have call successors, (4277), 1561 states have call predecessors, (4277), 1459 states have return successors, (4243), 4114 states have call predecessors, (4243), 4243 states have call successors, (4243) [2022-11-18 20:01:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31933 states to 31933 states and 44980 transitions. [2022-11-18 20:01:26,356 INFO L78 Accepts]: Start accepts. Automaton has 31933 states and 44980 transitions. Word has length 139 [2022-11-18 20:01:26,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:26,357 INFO L495 AbstractCegarLoop]: Abstraction has 31933 states and 44980 transitions. [2022-11-18 20:01:26,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 20:01:26,357 INFO L276 IsEmpty]: Start isEmpty. Operand 31933 states and 44980 transitions. [2022-11-18 20:01:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-18 20:01:26,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:26,371 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:26,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:26,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e959a7-eae4-4f3a-b521-ac97808a1d4c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:01:26,584 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:26,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:26,585 INFO L85 PathProgramCache]: Analyzing trace with hash -461569973, now seen corresponding path program 1 times [2022-11-18 20:01:26,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:26,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960443116] [2022-11-18 20:01:26,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:26,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:01:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:01:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:01:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:01:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-18 20:01:27,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:27,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960443116] [2022-11-18 20:01:27,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960443116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:27,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:27,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:01:27,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006339510] [2022-11-18 20:01:27,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:27,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:27,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:27,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:27,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:27,590 INFO L87 Difference]: Start difference. First operand 31933 states and 44980 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:01:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:32,735 INFO L93 Difference]: Finished difference Result 71555 states and 101924 transitions. [2022-11-18 20:01:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:01:32,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 146 [2022-11-18 20:01:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:32,864 INFO L225 Difference]: With dead ends: 71555 [2022-11-18 20:01:32,864 INFO L226 Difference]: Without dead ends: 39625 [2022-11-18 20:01:33,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:01:33,012 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 914 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:33,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 2733 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:01:33,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39625 states. [2022-11-18 20:01:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39625 to 37163. [2022-11-18 20:01:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37163 states, 30532 states have (on average 1.3899515262675226) internal successors, (42438), 30845 states have internal predecessors, (42438), 4943 states have call successors, (4943), 1801 states have call predecessors, (4943), 1687 states have return successors, (4909), 4768 states have call predecessors, (4909), 4909 states have call successors, (4909) [2022-11-18 20:01:36,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52290 transitions. [2022-11-18 20:01:36,043 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52290 transitions. Word has length 146 [2022-11-18 20:01:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:36,044 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52290 transitions. [2022-11-18 20:01:36,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:01:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52290 transitions. [2022-11-18 20:01:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 20:01:36,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:36,059 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:36,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:01:36,059 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:36,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:36,060 INFO L85 PathProgramCache]: Analyzing trace with hash -326345977, now seen corresponding path program 1 times [2022-11-18 20:01:36,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:36,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263380001] [2022-11-18 20:01:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:36,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:01:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:01:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:01:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:01:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:01:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 20:01:37,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:37,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263380001] [2022-11-18 20:01:37,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263380001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:37,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:37,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:01:37,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41742018] [2022-11-18 20:01:37,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:37,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:01:37,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:37,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:01:37,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:37,699 INFO L87 Difference]: Start difference. First operand 37163 states and 52290 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:01:42,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:42,374 INFO L93 Difference]: Finished difference Result 76763 states and 108709 transitions. [2022-11-18 20:01:42,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:01:42,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 148 [2022-11-18 20:01:42,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:42,493 INFO L225 Difference]: With dead ends: 76763 [2022-11-18 20:01:42,493 INFO L226 Difference]: Without dead ends: 39603 [2022-11-18 20:01:42,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:01:42,558 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1165 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 2239 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:42,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 2239 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:01:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39603 states. [2022-11-18 20:01:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39603 to 37163. [2022-11-18 20:01:46,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37163 states, 30532 states have (on average 1.3895584960041922) internal successors, (42426), 30845 states have internal predecessors, (42426), 4943 states have call successors, (4943), 1801 states have call predecessors, (4943), 1687 states have return successors, (4909), 4768 states have call predecessors, (4909), 4909 states have call successors, (4909) [2022-11-18 20:01:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52278 transitions. [2022-11-18 20:01:46,416 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52278 transitions. Word has length 148 [2022-11-18 20:01:46,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:46,417 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52278 transitions. [2022-11-18 20:01:46,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:01:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52278 transitions. [2022-11-18 20:01:46,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 20:01:46,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:46,432 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:46,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:01:46,432 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:46,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:46,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1313079175, now seen corresponding path program 1 times [2022-11-18 20:01:46,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:46,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890399155] [2022-11-18 20:01:46,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:46,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:47,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:47,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:01:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:47,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:01:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:47,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:47,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:47,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:47,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:01:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:47,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:01:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:47,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 20:01:47,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:47,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890399155] [2022-11-18 20:01:47,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890399155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:47,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:47,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:01:47,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823348740] [2022-11-18 20:01:47,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:47,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:01:47,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:47,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:01:47,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:47,951 INFO L87 Difference]: Start difference. First operand 37163 states and 52278 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:01:52,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:52,495 INFO L93 Difference]: Finished difference Result 76763 states and 108685 transitions. [2022-11-18 20:01:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:01:52,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 148 [2022-11-18 20:01:52,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:52,599 INFO L225 Difference]: With dead ends: 76763 [2022-11-18 20:01:52,599 INFO L226 Difference]: Without dead ends: 39603 [2022-11-18 20:01:52,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:01:52,647 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 827 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:52,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 2634 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:01:52,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39603 states. [2022-11-18 20:01:55,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39603 to 37163. [2022-11-18 20:01:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37163 states, 30532 states have (on average 1.389165465740862) internal successors, (42414), 30845 states have internal predecessors, (42414), 4943 states have call successors, (4943), 1801 states have call predecessors, (4943), 1687 states have return successors, (4909), 4768 states have call predecessors, (4909), 4909 states have call successors, (4909) [2022-11-18 20:01:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52266 transitions. [2022-11-18 20:01:55,927 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52266 transitions. Word has length 148 [2022-11-18 20:01:55,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:55,927 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52266 transitions. [2022-11-18 20:01:55,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:01:55,928 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52266 transitions. [2022-11-18 20:01:55,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 20:01:55,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:55,938 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:55,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:01:55,939 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:55,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:55,939 INFO L85 PathProgramCache]: Analyzing trace with hash 113061130, now seen corresponding path program 1 times [2022-11-18 20:01:55,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:55,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213397479] [2022-11-18 20:01:55,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:55,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:56,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:56,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:56,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:01:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:56,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:56,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:01:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:56,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:01:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:57,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:01:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:01:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:57,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-18 20:01:57,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:57,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213397479] [2022-11-18 20:01:57,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213397479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:57,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:57,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:01:57,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070416923] [2022-11-18 20:01:57,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:57,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:01:57,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:57,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:01:57,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:57,013 INFO L87 Difference]: Start difference. First operand 37163 states and 52266 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)