./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:37:42,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:37:42,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:37:42,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:37:42,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:37:42,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:37:42,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:37:42,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:37:42,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:37:42,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:37:42,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:37:42,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:37:42,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:37:42,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:37:42,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:37:42,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:37:42,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:37:42,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:37:42,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:37:42,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:37:43,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:37:43,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:37:43,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:37:43,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:37:43,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:37:43,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:37:43,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:37:43,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:37:43,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:37:43,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:37:43,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:37:43,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:37:43,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:37:43,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:37:43,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:37:43,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:37:43,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:37:43,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:37:43,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:37:43,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:37:43,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:37:43,029 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:37:43,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:37:43,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:37:43,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:37:43,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:37:43,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:37:43,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:37:43,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:37:43,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:37:43,071 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:37:43,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:37:43,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:37:43,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:37:43,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:37:43,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:37:43,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:37:43,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:37:43,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:37:43,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:37:43,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:37:43,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:37:43,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:37:43,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:37:43,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:37:43,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:37:43,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:37:43,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:37:43,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:37:43,077 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:37:43,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:37:43,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:37:43,078 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_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2022-11-02 20:37:43,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:37:43,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:37:43,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:37:43,412 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:37:43,412 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:37:43,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-02 20:37:43,507 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/data/bc9b10d72/320f51e07f314a39b695375759dd46e5/FLAG5f964d19f [2022-11-02 20:37:44,366 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:37:44,367 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-02 20:37:44,433 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/data/bc9b10d72/320f51e07f314a39b695375759dd46e5/FLAG5f964d19f [2022-11-02 20:37:44,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/data/bc9b10d72/320f51e07f314a39b695375759dd46e5 [2022-11-02 20:37:44,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:37:44,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:37:44,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:37:44,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:37:44,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:37:44,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:37:44" (1/1) ... [2022-11-02 20:37:44,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6502965b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:44, skipping insertion in model container [2022-11-02 20:37:44,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:37:44" (1/1) ... [2022-11-02 20:37:44,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:37:45,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:37:46,039 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2022-11-02 20:37:47,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:37:47,288 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:37:47,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2022-11-02 20:37:47,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:37:48,090 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:37:48,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:48 WrapperNode [2022-11-02 20:37:48,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:37:48,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:37:48,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:37:48,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:37:48,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:48" (1/1) ... [2022-11-02 20:37:48,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:48" (1/1) ... [2022-11-02 20:37:48,380 INFO L138 Inliner]: procedures = 371, calls = 3017, calls flagged for inlining = 198, calls inlined = 180, statements flattened = 6286 [2022-11-02 20:37:48,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:37:48,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:37:48,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:37:48,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:37:48,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:48" (1/1) ... [2022-11-02 20:37:48,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:48" (1/1) ... [2022-11-02 20:37:48,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:48" (1/1) ... [2022-11-02 20:37:48,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:48" (1/1) ... [2022-11-02 20:37:48,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:48" (1/1) ... [2022-11-02 20:37:48,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:48" (1/1) ... [2022-11-02 20:37:48,720 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:48" (1/1) ... [2022-11-02 20:37:48,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:48" (1/1) ... [2022-11-02 20:37:48,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:37:48,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:37:48,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:37:48,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:37:48,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:48" (1/1) ... [2022-11-02 20:37:48,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:37:48,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:48,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:37:48,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3ac3a6-ae93-4e0a-b0e4-1d68380cf3dd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:37:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-11-02 20:37:48,863 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-11-02 20:37:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-11-02 20:37:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-11-02 20:37:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-11-02 20:37:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-11-02 20:37:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-11-02 20:37:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-11-02 20:37:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-02 20:37:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-02 20:37:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_14 [2022-11-02 20:37:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_14 [2022-11-02 20:37:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-11-02 20:37:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-11-02 20:37:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-02 20:37:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-02 20:37:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-02 20:37:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-02 20:37:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-11-02 20:37:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-11-02 20:37:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-11-02 20:37:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-11-02 20:37:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2022-11-02 20:37:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2022-11-02 20:37:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-02 20:37:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-02 20:37:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-11-02 20:37:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-11-02 20:37:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-02 20:37:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-02 20:37:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-02 20:37:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-02 20:37:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-11-02 20:37:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-11-02 20:37:48,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:37:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:37:48,869 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-02 20:37:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-02 20:37:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-02 20:37:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-02 20:37:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2022-11-02 20:37:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2022-11-02 20:37:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2022-11-02 20:37:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2022-11-02 20:37:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-11-02 20:37:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-11-02 20:37:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-11-02 20:37:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-11-02 20:37:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-02 20:37:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-02 20:37:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 20:37:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 20:37:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2022-11-02 20:37:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2022-11-02 20:37:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-11-02 20:37:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-11-02 20:37:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-11-02 20:37:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-11-02 20:37:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-02 20:37:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-02 20:37:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-11-02 20:37:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-11-02 20:37:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-02 20:37:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-02 20:37:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:37:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:37:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-11-02 20:37:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-11-02 20:37:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-11-02 20:37:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-11-02 20:37:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-11-02 20:37:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-11-02 20:37:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-11-02 20:37:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-11-02 20:37:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2022-11-02 20:37:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2022-11-02 20:37:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___2 [2022-11-02 20:37:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___2 [2022-11-02 20:37:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-11-02 20:37:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-11-02 20:37:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-02 20:37:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-02 20:37:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-02 20:37:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-02 20:37:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:37:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-02 20:37:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-02 20:37:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-11-02 20:37:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-11-02 20:37:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-11-02 20:37:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-11-02 20:37:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-11-02 20:37:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-11-02 20:37:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-11-02 20:37:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-11-02 20:37:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-02 20:37:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-02 20:37:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:37:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-02 20:37:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-02 20:37:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-02 20:37:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-11-02 20:37:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-11-02 20:37:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-11-02 20:37:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-11-02 20:37:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-02 20:37:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-02 20:37:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-02 20:37:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-02 20:37:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-11-02 20:37:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-11-02 20:37:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-11-02 20:37:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-11-02 20:37:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:37:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:37:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-11-02 20:37:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-11-02 20:37:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-02 20:37:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-02 20:37:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-02 20:37:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-02 20:37:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-02 20:37:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-02 20:37:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-11-02 20:37:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-11-02 20:37:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-11-02 20:37:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-11-02 20:37:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-02 20:37:48,900 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-02 20:37:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-02 20:37:48,900 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-02 20:37:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-02 20:37:48,900 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-02 20:37:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-11-02 20:37:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-11-02 20:37:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-11-02 20:37:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-11-02 20:37:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-11-02 20:37:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-11-02 20:37:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-02 20:37:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-02 20:37:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-11-02 20:37:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-11-02 20:37:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2022-11-02 20:37:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2022-11-02 20:37:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-02 20:37:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-02 20:37:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-11-02 20:37:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-11-02 20:37:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-02 20:37:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-02 20:37:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-02 20:37:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-02 20:37:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-11-02 20:37:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-11-02 20:37:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-11-02 20:37:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-11-02 20:37:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-11-02 20:37:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-11-02 20:37:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-11-02 20:37:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-11-02 20:37:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:37:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-11-02 20:37:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-11-02 20:37:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-02 20:37:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-02 20:37:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2022-11-02 20:37:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2022-11-02 20:37:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-02 20:37:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-02 20:37:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-11-02 20:37:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-11-02 20:37:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-11-02 20:37:48,905 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-11-02 20:37:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-02 20:37:48,905 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-02 20:37:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-02 20:37:48,905 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-02 20:37:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-02 20:37:48,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-02 20:37:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-11-02 20:37:48,905 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-11-02 20:37:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-02 20:37:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-02 20:37:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2022-11-02 20:37:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2022-11-02 20:37:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2022-11-02 20:37:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2022-11-02 20:37:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-02 20:37:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-02 20:37:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:37:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2022-11-02 20:37:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2022-11-02 20:37:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-11-02 20:37:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-11-02 20:37:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-02 20:37:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-02 20:37:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 20:37:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 20:37:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-11-02 20:37:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-11-02 20:37:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-11-02 20:37:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-11-02 20:37:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2022-11-02 20:37:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2022-11-02 20:37:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:37:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-11-02 20:37:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-11-02 20:37:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:37:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-02 20:37:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-02 20:37:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:37:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-02 20:37:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_18 [2022-11-02 20:37:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_18 [2022-11-02 20:37:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2022-11-02 20:37:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2022-11-02 20:37:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-02 20:37:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-02 20:37:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-02 20:37:48,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-02 20:37:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-11-02 20:37:48,910 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-11-02 20:37:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-02 20:37:48,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-02 20:37:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-11-02 20:37:48,910 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-11-02 20:37:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_22 [2022-11-02 20:37:48,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_22 [2022-11-02 20:37:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-11-02 20:37:48,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-11-02 20:37:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-11-02 20:37:48,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-11-02 20:37:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-11-02 20:37:48,911 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-11-02 20:37:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-02 20:37:48,911 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-02 20:37:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-02 20:37:48,911 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-02 20:37:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-11-02 20:37:48,912 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-11-02 20:37:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:37:48,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:37:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-11-02 20:37:48,912 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-11-02 20:37:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-02 20:37:48,912 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-02 20:37:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-02 20:37:48,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-02 20:37:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:37:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:37:48,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:37:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-02 20:37:48,913 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-02 20:37:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-11-02 20:37:48,913 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-11-02 20:37:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-02 20:37:48,913 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-02 20:37:49,894 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:37:49,904 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:37:50,357 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-02 20:37:51,205 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___2FINAL: assume true; [2022-11-02 20:37:59,339 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:37:59,369 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:37:59,369 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:37:59,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:37:59 BoogieIcfgContainer [2022-11-02 20:37:59,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:37:59,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:37:59,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:37:59,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:37:59,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:37:44" (1/3) ... [2022-11-02 20:37:59,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcd3880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:37:59, skipping insertion in model container [2022-11-02 20:37:59,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:48" (2/3) ... [2022-11-02 20:37:59,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcd3880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:37:59, skipping insertion in model container [2022-11-02 20:37:59,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:37:59" (3/3) ... [2022-11-02 20:37:59,384 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-02 20:37:59,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:37:59,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:37:59,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:37:59,556 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;@5e5c228c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:37:59,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:37:59,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 2105 states, 1518 states have (on average 1.3399209486166008) internal successors, (2034), 1559 states have internal predecessors, (2034), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) [2022-11-02 20:37:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-02 20:37:59,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:59,600 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:59,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:59,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:59,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1989796788, now seen corresponding path program 1 times [2022-11-02 20:37:59,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:59,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342117881] [2022-11-02 20:37:59,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:59,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:00,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:38:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:00,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:38:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:00,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:38:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:00,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:38:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:38:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:38:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:00,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 20:38:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:00,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 20:38:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:00,706 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 20:38:00,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:00,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342117881] [2022-11-02 20:38:00,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342117881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:00,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:00,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:38:00,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631436954] [2022-11-02 20:38:00,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:00,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:38:00,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:00,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:38:00,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:38:00,759 INFO L87 Difference]: Start difference. First operand has 2105 states, 1518 states have (on average 1.3399209486166008) internal successors, (2034), 1559 states have internal predecessors, (2034), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-02 20:38:04,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:38:12,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:12,008 INFO L93 Difference]: Finished difference Result 6691 states and 9849 transitions. [2022-11-02 20:38:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:38:12,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2022-11-02 20:38:12,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:12,079 INFO L225 Difference]: With dead ends: 6691 [2022-11-02 20:38:12,079 INFO L226 Difference]: Without dead ends: 4554 [2022-11-02 20:38:12,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:38:12,109 INFO L413 NwaCegarLoop]: 3159 mSDtfsCounter, 4027 mSDsluCounter, 3668 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 1412 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 3428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1412 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:12,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4346 Valid, 6827 Invalid, 3428 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1412 Valid, 2015 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-11-02 20:38:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2022-11-02 20:38:12,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 4048. [2022-11-02 20:38:12,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 2945 states have (on average 1.33276740237691) internal successors, (3925), 2988 states have internal predecessors, (3925), 866 states have call successors, (866), 237 states have call predecessors, (866), 236 states have return successors, (859), 837 states have call predecessors, (859), 859 states have call successors, (859) [2022-11-02 20:38:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 5650 transitions. [2022-11-02 20:38:12,614 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 5650 transitions. Word has length 69 [2022-11-02 20:38:12,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:12,615 INFO L495 AbstractCegarLoop]: Abstraction has 4048 states and 5650 transitions. [2022-11-02 20:38:12,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-02 20:38:12,616 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 5650 transitions. [2022-11-02 20:38:12,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-02 20:38:12,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:12,631 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:12,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:38:12,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:12,633 INFO L85 PathProgramCache]: Analyzing trace with hash -2119451424, now seen corresponding path program 1 times [2022-11-02 20:38:12,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:12,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517845260] [2022-11-02 20:38:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:12,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:13,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:38:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:38:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:38:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:13,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:38:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:13,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:38:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:38:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:13,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 20:38:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:13,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 20:38:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:13,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 20:38:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:13,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-02 20:38:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 20:38:13,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:13,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517845260] [2022-11-02 20:38:13,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517845260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:13,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:13,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:38:13,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823308807] [2022-11-02 20:38:13,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:13,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:38:13,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:13,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:38:13,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:38:13,171 INFO L87 Difference]: Start difference. First operand 4048 states and 5650 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:38:17,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:38:23,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:23,972 INFO L93 Difference]: Finished difference Result 12746 states and 17994 transitions. [2022-11-02 20:38:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:38:23,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2022-11-02 20:38:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:24,033 INFO L225 Difference]: With dead ends: 12746 [2022-11-02 20:38:24,033 INFO L226 Difference]: Without dead ends: 8719 [2022-11-02 20:38:24,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:38:24,058 INFO L413 NwaCegarLoop]: 3105 mSDtfsCounter, 3824 mSDsluCounter, 3546 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 1358 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4152 SdHoareTripleChecker+Valid, 6651 SdHoareTripleChecker+Invalid, 3466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1358 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:24,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4152 Valid, 6651 Invalid, 3466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1358 Valid, 2107 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-02 20:38:24,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8719 states. [2022-11-02 20:38:24,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8719 to 7670. [2022-11-02 20:38:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7670 states, 5584 states have (on average 1.3273638968481376) internal successors, (7412), 5665 states have internal predecessors, (7412), 1627 states have call successors, (1627), 459 states have call predecessors, (1627), 458 states have return successors, (1620), 1575 states have call predecessors, (1620), 1620 states have call successors, (1620) [2022-11-02 20:38:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7670 states to 7670 states and 10659 transitions. [2022-11-02 20:38:24,440 INFO L78 Accepts]: Start accepts. Automaton has 7670 states and 10659 transitions. Word has length 89 [2022-11-02 20:38:24,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:24,441 INFO L495 AbstractCegarLoop]: Abstraction has 7670 states and 10659 transitions. [2022-11-02 20:38:24,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:38:24,441 INFO L276 IsEmpty]: Start isEmpty. Operand 7670 states and 10659 transitions. [2022-11-02 20:38:24,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-02 20:38:24,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:24,446 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:24,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:38:24,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:24,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:24,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1481995065, now seen corresponding path program 1 times [2022-11-02 20:38:24,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:24,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971825578] [2022-11-02 20:38:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:24,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:24,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:38:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:24,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:38:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:38:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:24,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:38:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:24,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:38:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:24,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:38:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:24,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 20:38:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:24,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 20:38:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:24,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:38:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:25,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 20:38:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:25,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-02 20:38:25,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:25,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971825578] [2022-11-02 20:38:25,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971825578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:25,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:25,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:38:25,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204210140] [2022-11-02 20:38:25,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:25,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:38:25,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:25,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:38:25,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:38:25,041 INFO L87 Difference]: Start difference. First operand 7670 states and 10659 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-02 20:38:29,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:38:41,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:41,782 INFO L93 Difference]: Finished difference Result 29996 states and 43373 transitions. [2022-11-02 20:38:41,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:38:41,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 4 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 97 [2022-11-02 20:38:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:41,933 INFO L225 Difference]: With dead ends: 29996 [2022-11-02 20:38:41,933 INFO L226 Difference]: Without dead ends: 22347 [2022-11-02 20:38:41,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:38:41,973 INFO L413 NwaCegarLoop]: 3164 mSDtfsCounter, 7752 mSDsluCounter, 4559 mSDsCounter, 0 mSdLazyCounter, 4344 mSolverCounterSat, 4144 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8209 SdHoareTripleChecker+Valid, 7723 SdHoareTripleChecker+Invalid, 8489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4144 IncrementalHoareTripleChecker+Valid, 4344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:41,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8209 Valid, 7723 Invalid, 8489 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4144 Valid, 4344 Invalid, 1 Unknown, 0 Unchecked, 15.6s Time] [2022-11-02 20:38:41,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22347 states. [2022-11-02 20:38:43,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22347 to 15170. [2022-11-02 20:38:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15170 states, 11050 states have (on average 1.3270588235294118) internal successors, (14664), 11207 states have internal predecessors, (14664), 3207 states have call successors, (3207), 913 states have call predecessors, (3207), 912 states have return successors, (3200), 3109 states have call predecessors, (3200), 3200 states have call successors, (3200) [2022-11-02 20:38:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15170 states to 15170 states and 21071 transitions. [2022-11-02 20:38:43,199 INFO L78 Accepts]: Start accepts. Automaton has 15170 states and 21071 transitions. Word has length 97 [2022-11-02 20:38:43,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:43,200 INFO L495 AbstractCegarLoop]: Abstraction has 15170 states and 21071 transitions. [2022-11-02 20:38:43,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-02 20:38:43,201 INFO L276 IsEmpty]: Start isEmpty. Operand 15170 states and 21071 transitions. [2022-11-02 20:38:43,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 20:38:43,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:43,206 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:43,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:38:43,206 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:43,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1715328829, now seen corresponding path program 1 times [2022-11-02 20:38:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:43,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445516860] [2022-11-02 20:38:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:43,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:38:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:38:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:38:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:38:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:38:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:38:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 20:38:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 20:38:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 20:38:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 20:38:43,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:43,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445516860] [2022-11-02 20:38:43,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445516860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:43,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:43,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:38:43,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816103911] [2022-11-02 20:38:43,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:43,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:38:43,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:43,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:38:43,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:38:43,615 INFO L87 Difference]: Start difference. First operand 15170 states and 21071 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:38:46,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:39:00,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:00,963 INFO L93 Difference]: Finished difference Result 58956 states and 86037 transitions. [2022-11-02 20:39:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:39:00,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2022-11-02 20:39:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:01,238 INFO L225 Difference]: With dead ends: 58956 [2022-11-02 20:39:01,238 INFO L226 Difference]: Without dead ends: 43807 [2022-11-02 20:39:01,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:39:01,321 INFO L413 NwaCegarLoop]: 3080 mSDtfsCounter, 7614 mSDsluCounter, 4643 mSDsCounter, 0 mSdLazyCounter, 4404 mSolverCounterSat, 4113 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8049 SdHoareTripleChecker+Valid, 7723 SdHoareTripleChecker+Invalid, 8518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4113 IncrementalHoareTripleChecker+Valid, 4404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:01,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8049 Valid, 7723 Invalid, 8518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4113 Valid, 4404 Invalid, 1 Unknown, 0 Unchecked, 15.3s Time] [2022-11-02 20:39:01,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43807 states. [2022-11-02 20:39:03,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43807 to 38538. [2022-11-02 20:39:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38538 states, 28142 states have (on average 1.3164664913652193) internal successors, (37048), 28354 states have internal predecessors, (37048), 7991 states have call successors, (7991), 1797 states have call predecessors, (7991), 2404 states have return successors, (10352), 8534 states have call predecessors, (10352), 7984 states have call successors, (10352) [2022-11-02 20:39:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38538 states to 38538 states and 55391 transitions. [2022-11-02 20:39:04,195 INFO L78 Accepts]: Start accepts. Automaton has 38538 states and 55391 transitions. Word has length 93 [2022-11-02 20:39:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:04,195 INFO L495 AbstractCegarLoop]: Abstraction has 38538 states and 55391 transitions. [2022-11-02 20:39:04,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:39:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 38538 states and 55391 transitions. [2022-11-02 20:39:04,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:39:04,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:04,199 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:04,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:39:04,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:04,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2146301045, now seen corresponding path program 1 times [2022-11-02 20:39:04,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:04,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801142385] [2022-11-02 20:39:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:04,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:39:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:39:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:39:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:39:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:39:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 20:39:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 20:39:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:39:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 20:39:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 20:39:05,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:05,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801142385] [2022-11-02 20:39:05,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801142385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:05,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:05,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:39:05,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748576722] [2022-11-02 20:39:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:05,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:39:05,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:05,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:39:05,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:05,240 INFO L87 Difference]: Start difference. First operand 38538 states and 55391 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-02 20:39:17,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:17,856 INFO L93 Difference]: Finished difference Result 129915 states and 206472 transitions. [2022-11-02 20:39:17,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:17,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 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 92 [2022-11-02 20:39:17,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:18,659 INFO L225 Difference]: With dead ends: 129915 [2022-11-02 20:39:18,659 INFO L226 Difference]: Without dead ends: 91398 [2022-11-02 20:39:19,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:19,055 INFO L413 NwaCegarLoop]: 3293 mSDtfsCounter, 5912 mSDsluCounter, 4000 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 2842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6221 SdHoareTripleChecker+Valid, 7293 SdHoareTripleChecker+Invalid, 4999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2842 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:19,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6221 Valid, 7293 Invalid, 4999 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2842 Valid, 2157 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-02 20:39:19,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91398 states. [2022-11-02 20:39:24,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91398 to 83018. [2022-11-02 20:39:24,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83018 states, 60770 states have (on average 1.3114530195820306) internal successors, (79697), 61116 states have internal predecessors, (79697), 16759 states have call successors, (16759), 3593 states have call predecessors, (16759), 5488 states have return successors, (29268), 18636 states have call predecessors, (29268), 16752 states have call successors, (29268) [2022-11-02 20:39:25,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83018 states to 83018 states and 125724 transitions. [2022-11-02 20:39:25,905 INFO L78 Accepts]: Start accepts. Automaton has 83018 states and 125724 transitions. Word has length 92 [2022-11-02 20:39:25,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:25,914 INFO L495 AbstractCegarLoop]: Abstraction has 83018 states and 125724 transitions. [2022-11-02 20:39:25,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-02 20:39:25,915 INFO L276 IsEmpty]: Start isEmpty. Operand 83018 states and 125724 transitions. [2022-11-02 20:39:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 20:39:25,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:25,926 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:25,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:39:25,926 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:25,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:25,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2112276362, now seen corresponding path program 1 times [2022-11-02 20:39:25,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:25,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745865641] [2022-11-02 20:39:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:25,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:39:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:39:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:39:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:39:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:39:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 20:39:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 20:39:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:39:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 20:39:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 20:39:26,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:26,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745865641] [2022-11-02 20:39:26,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745865641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:26,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:26,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:39:26,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040220150] [2022-11-02 20:39:26,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:26,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:39:26,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:26,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:39:26,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:26,876 INFO L87 Difference]: Start difference. First operand 83018 states and 125724 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-02 20:39:46,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:46,895 INFO L93 Difference]: Finished difference Result 265587 states and 452903 transitions. [2022-11-02 20:39:46,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:46,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 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 93 [2022-11-02 20:39:46,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:48,429 INFO L225 Difference]: With dead ends: 265587 [2022-11-02 20:39:48,430 INFO L226 Difference]: Without dead ends: 182590 [2022-11-02 20:39:49,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:49,492 INFO L413 NwaCegarLoop]: 3473 mSDtfsCounter, 5662 mSDsluCounter, 4115 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 2729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5980 SdHoareTripleChecker+Valid, 7588 SdHoareTripleChecker+Invalid, 4913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2729 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:49,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5980 Valid, 7588 Invalid, 4913 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2729 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-02 20:39:49,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182590 states. [2022-11-02 20:40:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182590 to 167915. [2022-11-02 20:40:00,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167915 states, 122891 states have (on average 1.3083871072739257) internal successors, (160789), 123505 states have internal predecessors, (160789), 33751 states have call successors, (33751), 7185 states have call predecessors, (33751), 11272 states have return successors, (74860), 37880 states have call predecessors, (74860), 33744 states have call successors, (74860) [2022-11-02 20:40:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167915 states to 167915 states and 269400 transitions. [2022-11-02 20:40:03,092 INFO L78 Accepts]: Start accepts. Automaton has 167915 states and 269400 transitions. Word has length 93 [2022-11-02 20:40:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:03,093 INFO L495 AbstractCegarLoop]: Abstraction has 167915 states and 269400 transitions. [2022-11-02 20:40:03,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-02 20:40:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 167915 states and 269400 transitions. [2022-11-02 20:40:03,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:40:03,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:03,097 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:03,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:40:03,098 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:03,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:03,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1057506322, now seen corresponding path program 1 times [2022-11-02 20:40:03,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:03,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224721695] [2022-11-02 20:40:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:03,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:40:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:40:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:40:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:40:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:40:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:40:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 20:40:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 20:40:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:40:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 20:40:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:40:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 20:40:03,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:03,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224721695] [2022-11-02 20:40:03,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224721695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:03,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:03,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:40:03,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479082056] [2022-11-02 20:40:03,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:03,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:40:03,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:03,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:40:03,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:40:03,581 INFO L87 Difference]: Start difference. First operand 167915 states and 269400 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-02 20:40:06,697 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 []